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March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
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Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – A Second Sample of the Shamoon V3 Wiper
December 19, 2018Rewterz Threat Advisory – CVE-2018-8653 – Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
December 20, 2018
SEVERITY: Medium
CATEGORY: Informative Updates
ANALYSIS SUMMARY
A set of commands have been retrieved from memes posted on a hacker-controlled Twitter account, containing malware controlled by hackers. The new threat is detected as (TROJAN.MSIL.BERBOMTHUM.AA), a malicious Trojan received via legitimate service of Twitter. The BERBOMTHUM malware checks the Twitter account used by the attackers, downloads and scans meme files, and extracts the commands they include.
Attackers hid the “/print” command in the memes, which allows them to take screenshots of the infected machine and send them back to a C&C server whose address is obtained through a hard-coded URL on pastebin.com. Following commands were retrieved from the memes.
Commands
/print (Screen capture)
/processos (Retrieve list of running processes)
/clip (Capture clipboard content)
/username (Retrieve username from infected machine)
/docs (Retrieve filenames from a predefined path such as (desktop, %AppData% etc.))
The malware can only be disabled by deletion of the malicious Twitter account.
IMPACT
Command execution on target device.
AFFECTED PRODUCTS
REMEDIATION
Do not download or click on attachments or links that are unexpected and do not seem to be coming from legitimate and verified sources.