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How to Detect New Threats via Suspicious Activities

How to Detect New Threats via Suspicious Activities

Feb 20, 2023 Malware Analysis / Threat Detection
Unknown malware presents a significant cybersecurity threat and can cause serious damage to organizations and individuals alike. When left undetected, malicious code can gain access to confidential information, corrupt data, and allow attackers to gain control of systems. Find out how to avoid these circumstances and detect unknown malicious behavior efficiently.  Challenges of new threats' detection While known malware families are more predictable and can be detected more easily, unknown threats can take on a variety of forms, causing a bunch of challenges for their detection: Malware developers use polymorphism, which enables them to modify the malicious code to generate unique variants of the same malware.  There is malware that is still not identified and doesn't have any rulesets for detection. Some threats can be Fully UnDetectable (FUD) for some time and challenge perimeter security.  The code is often encrypted, making it difficult to detect by signature-based
Mysterious malware that re-installs itself infected over 45,000 Android Phones

Mysterious malware that re-installs itself infected over 45,000 Android Phones

Oct 29, 2019
Over the past few months, hundreds of Android users have been complaining online of a new piece of mysterious malware that hides on the infected devices and can reportedly reinstall itself even after users delete it, or factory reset their devices. Dubbed Xhelper , the malware has already infected more than 45,000 Android devices in just the last six months and is continuing to spread by infecting at least 2,400 devices on an average each month, according to the latest report published today by Symantec. Here below, I have collected excerpts from some comments that affected users shared on the online forums while asking for how to remove the Xhelper Android malware: "xhelper regularly reinstalls itself, almost every day!" "the 'install apps from unknown sources' setting turns itself on." "I rebooted my phone and also wiped my phone yet the app xhelper came back." "Xhelper came pre-installed on the phone from China."
GandCrab ransomware and Ursnif virus spreading via MS Word macros

GandCrab ransomware and Ursnif virus spreading via MS Word macros

Jan 25, 2019
Security researchers have discovered two separate malware campaigns, one of which is distributing the Ursnif data-stealing trojan and the GandCrab ransomware in the wild, whereas the second one is only infecting victims with Ursnif malware. Though both malware campaigns appear to be a work of two separate cybercriminal groups, we find many similarities in them. Both attacks start from phishing emails containing an attached Microsoft Word document embedded with malicious macros and then uses Powershell to deliver fileless malware. Ursnif is a data-stealing malware that typically steals sensitive information from compromised computers with an ability to harvest banking credentials, browsing activities, collect keystrokes, system and process information, and deploy additional backdoors. Discovered earlier last year, GandCrab is a widespread ransomware threat that, like every other ransomware in the market, encrypts files on an infected system and insists victims to pay a ransom
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SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

May 13, 2024Threat Detection / SoC / SIEM
In the last decade, there has been a growing disconnect between front-line analysts and senior management in IT and Cybersecurity. Well-documented challenges facing modern analysts revolve around a high volume of alerts, false positives, poor visibility of technical environments, and analysts spending too much time on manual tasks. The Impact of Alert Fatigue and False Positives  Analysts are overwhelmed with alerts. The knock-on effect of this is that fatigued analysts are at risk of missing key details in incidents, and often conduct time-consuming triaging tasks manually only to end up copying and pasting a generic closing comment into a false positive alert.  It is likely that there will always be false positives. And many would argue that a false positive is better than a false negative. But for proactive actions to be made, we must move closer to the heart of an incident. That requires diving into how analysts conduct the triage and investigation process. SHQ Response Platfo
State-Sponsored SCADA Malware targeting European Energy Companies

State-Sponsored SCADA Malware targeting European Energy Companies

Jul 13, 2016
Security researchers have discovered a new campaign targeting energy companies in Western Europe with a sophisticated malware that almost goes to great lengths in order to remain undetected while targeting energy companies. Researchers from SentinelOne Labs discovered the malware, which has already infected at least one European energy company, is so sneaky and advanced that it is likely believed to be the work of a wealthy nation. The malware, dubbed ' SFG ', contains about 280 kilobytes of code, featuring a vast arsenal of tools rarely seen in ordinary malware samples. It takes " extreme measures " to cleverly and stealthily evade a large number of security defenses before it drops its payload. The malware dismantles antiviruses processes one-by-one until the malware is finally safe to uninstall them all. It also encrypts key features of its code so that it could not be discovered and analyzed. It'll not execute itself if it senses it's being run in
Unveiled: How xHelper Android Malware Re-Installs Even After Factory Reset

Unveiled: How xHelper Android Malware Re-Installs Even After Factory Reset

Apr 07, 2020
Remember xHelper? A mysterious piece of Android malware that re-installs itself on infected devices even after users delete it or factory reset their devices—making it nearly impossible to remove. xHelper reportedly infected over 45,000 devices last year, and since then, cybersecurity researchers have been trying to unfold how the malware survives factory reset and how it infected so many devices in the first place. In a blog post published today, Igor Golovin, malware analyst at Kaspersky, finally solved the mystery by unveiling technical details on the persistence mechanism used by this malware, and eventually also figured out how to remove xHelper from an infected device completely. As the initial attack vector and for distribution, the malware app disguises itself as a popular cleaner and speed optimization app for smartphones — affecting mostly users in Russia (80.56%), India (3.43%), and Algeria (2.43%). "But in reality, there is nothing useful about it: af
As State-Backed Cyber Threats Grow, Here's How the World Is Reacting

As State-Backed Cyber Threats Grow, Here's How the World Is Reacting

Apr 15, 2022
With the ongoing conflict in Eurasia, cyberwarfare is inevitably making its presence felt. The fight is not only being fought on the fields. There is also a big battle happening in cyberspace. Several cyber-attacks have been reported over the past months. Notably, cyber attacks backed by state actors are becoming prominent. There have been reports of a rise of ransomware and other malware attacks such as  Cyclops Blink ,  HermeticWiper , and  BlackCat . These target businesses as well as government institutions and nonprofit organizations. There have been cases of several attempts to shut down online communications and IT infrastructure. The ongoing list of  significant cyber incidents  curated by the Center for Strategic and International Studies (CSIS) shows that the number of major incidents in January 2022 is 100% higher compared to the same period in the previous year. With the recent activities in cyberspace impacted by the emergence of the geopolitical tumult in February, it
FBI issues alert over two new malware linked to Hidden Cobra hackers

FBI issues alert over two new malware linked to Hidden Cobra hackers

May 30, 2018
The US-CERT has released a joint technical alert from the DHS and the FBI, warning about two newly identified malware being used by the prolific North Korean APT hacking group known as Hidden Cobra. Hidden Cobra, often known as Lazarus Group and Guardians of Peace, is believed to be backed by the North Korean government and known to launch attacks against media organizations, aerospace, financial and critical infrastructure sectors across the world. The group was even associated with the WannaCry ransomware menace that last year shut down hospitals and businesses worldwide. It is reportedly also linked to the 2014 Sony Pictures hack , as well as the SWIFT Banking attack in 2016. Now, the Department of Homeland Security (DHS) and the FBI have uncovered two new pieces of malware that Hidden Cobra has been using since at least 2009 to target companies working in the media, aerospace, financial, and critical infrastructure sectors across the world. The malware Hidden Cobra is
Hackers stole $800,000 from ATMs using Fileless Malware

Hackers stole $800,000 from ATMs using Fileless Malware

Apr 04, 2017
Hackers targeted at least 8 ATMs in Russia and stole $800,000 in a single night, but the method used by the intruders remained a complete mystery with CCTV footage just showing a lone culprit walking up to the ATM and collecting cash without even touching the machine. Even the affected banks could not find any trace of malware on its ATMs or backend network or any sign of an intrusion. The only clue the unnamed bank's specialists found from the ATM's hard drive was — two files containing malware logs. The log files included the two process strings containing the phrases: "Take the Money Bitch!" and "Dispense Success." This small clue was enough for the researchers from the Russian security firm Kaspersky, who have been investigating the ATM heists, to find malware samples related to the ATM attack. In February, Kaspersky Labs reported that attackers managed to hit over 140 enterprises, including banks, telecoms, and government organizations, in th
Researchers unearth a huge botnet army of 500,000 hacked routers

Researchers unearth a huge botnet army of 500,000 hacked routers

May 23, 2018
More than half a million routers and storage devices in dozens of countries have been infected with a piece of highly sophisticated IoT botnet malware, likely designed by Russia-baked state-sponsored group. Cisco's Talos cyber intelligence unit have discovered an advanced piece of IoT botnet malware, dubbed VPNFilter , that has been designed with versatile capabilities to gather intelligence, interfere with internet communications, as well as conduct destructive cyber attack operations. The malware has already infected over 500,000 devices in at least 54 countries, most of which are small and home offices routers and internet-connected storage devices from Linksys, MikroTik, NETGEAR, and TP-Link. Some network-attached storage (NAS) devices known to have been targeted as well. VPNFilter is a multi-stage, modular malware that can steal website credentials and monitor industrial controls or SCADA systems, such as those used in electric grids, other infrastructure and factori
Malware Hunter — Shodan's new tool to find Malware C&C Servers

Malware Hunter — Shodan's new tool to find Malware C&C Servers

May 02, 2017
Rapidly growing, insecure internet-connected devices are becoming albatross around the necks of individuals and organizations with malware authors routinely hacking them to form botnets that can be further used as weapons in DDoS and other cyber attacks. But now finding malicious servers, hosted by attackers, that control botnet of infected machines gets a bit easier. Thanks to Shodan and Recorded Future. Shodan and Recorded Future have teamed up and launched Malware Hunter – a crawler that scans the Internet regularly to identify botnet command and control (C&C) servers for various malware and botnets. Command-and-control servers ( C&C servers ) are centralized machines that control the bots ( computers, smart appliances or smartphones ), typically infected with Remote Access Trojans or data-stealing malware, by sending commands and receiving data. Malware Hunter results have been integrated into Shodan – a search engine designed to gather and list information abo
Rombertik Malware Destroys Hard Drives to Avoid Detection

Rombertik Malware Destroys Hard Drives to Avoid Detection

May 06, 2015
Security researchers have discovered a new strain of malware that makes use of extraordinary measures to evade detection and analysis, making the computer it infects unusable. Dubbed Rombertik , which is "unique" among other self-destructing malware samples due to its unique evasion techniques. As soon as any analysis tool is detected, Rombertik attempts to delete the device's Master Boot Record (MBR) and home directories, making the machine constantly restart. Rombertik is a complex piece of spyware designed to "indiscriminately" collect everything a user does online in order to obtain victim's login credentials and other confidential information. Infects users via Phishing campaign: Rombertik typically gets installed on vulnerable machines when users click on malicious attachments included in phishing emails, Cisco security researchers Ben Baker and Alex Chiu said in a blog post  Monday. Once loaded into the system, Rombertik first runs
Inside Raccoon Stealer V2

Inside Raccoon Stealer V2

Nov 02, 2022
Raccoon Stealer is back on the news again. US officials arrested Mark Sokolovsky, one of the malware actors behind this program. In July 2022, after several months of the shutdown, a Raccoon Stealer V2 went viral. Last week, the Department of Justice's press release stated that the malware collected 50 million credentials. This article will give a quick guide to the latest info stealer's version. What is Raccoon infostealer V2? Raccoon Stealer  is a kind of malware that steals various data from an infected computer. It's quite a basic malware, but hackers have made Raccoon popular with excellent service and simple navigation.  In 2019, Raccoon infostealer was one of the most discussed malware. In exchange for $75 per week and $200 per month, cybercriminals sold this simple but versatile info stealer as a MaaS. The malware was successful in attacking a number of systems. In March 2022, however, threat authors ceased to operate.  An updated version of this malware was r
New Malware Takes Commands From Memes Posted On Twitter

New Malware Takes Commands From Memes Posted On Twitter

Dec 18, 2018
Security researchers have discovered yet another example of how cybercriminals disguise their malware activities as regular traffic by using legitimate cloud-based services. Trend Micro researchers have uncovered a new piece of malware that retrieves commands from memes posted on a Twitter account controlled by the attackers. Most malware relies on communication with their command-and-control server to receive instructions from attackers and perform various tasks on infected computers. Since security tools keep an eye on the network traffic to detect malicious IP addresses, attackers are increasingly using legitimate websites and servers as infrastructure in their attacks to make the malicious software more difficult to detect. In the recently spotted malicious scheme, which according to the researchers is in its early stage, the hackers uses Steganography —a technique of hiding contents within a digital graphic image in such a way that's invisible to an observer—to hid
YiSpecter — First iOS Malware that Attacks both: Non-jailbroken and Jailbroken Devices

YiSpecter — First iOS Malware that Attacks both: Non-jailbroken and Jailbroken Devices

Oct 05, 2015
Less than a month after Apple suffered one of its biggest malware attacks ever, security researchers have discovered another strain of malware that they claim targets both jailbroken as well as non-jailbroken iOS devices . Last month, researchers identified more than 4,000 infected apps in Apple's official App Store, which was targeted by a malware attack in which some versions of software used by developers to build apps for iOS and OS X were infected with malware, named XcodeGhost . And Now: Researchers from a California-based network security firm Palo Alto Networks have discovered new malware that targets Apple's iOS users in China and Taiwan. Capabilities of YiSpecter Malware Dubbed YiSpecter , the malware infects iOS devices and once infected, YiSpecter can: Install unwanted apps Replace legitimate apps with ones it has downloaded Force apps to display unwanted, full-screen ads Change bookmarks as well as default search engines in Safari S
Malvertising Campaign Targets Brazil's PIX Payment System with GoPIX Malware

Malvertising Campaign Targets Brazil's PIX Payment System with GoPIX Malware

Oct 25, 2023 Malvertising / Banking Trojan
The popularity of Brazil's  PIX  instant payment system has made it a  lucrative target for threat actors  looking to generate illicit profits using a new malware called GoPIX . Kaspersky, which has been tracking the active campaign since December 2022, said the attacks are pulled off  using malicious ads  that are served when potential victims search for "WhatsApp web" on search engines. "The cybercriminals employ malvertising: their links are placed in the ad section of the search results, so the user sees them first," the Russian cybersecurity vendor  said . "If they click such a link, a redirection follows, with the user ending up on the malware landing page." As other malvertising campaigns observed recently, users who click on the ad will be redirected via a cloaking service that is meant to filter sandboxes, bots, and others not deemed to be genuine victims. This is accomplished by using a legitimate fraud prevention solution known as  IPQu
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