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
September 25, 2023
Severity High Analysis Summary CVE-2023-42753 Linux Kernel could allow a local authenticated attacker to execute arbitrary code on the system, caused by an integer underflow due […]September 25, 2023Severity Medium Analysis Summary AsyncRAT is an open-source tool designed for remote monitoring via encrypted connections. However, it could be utilized by threat actors as it […]September 22, 2023Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]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
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
September 25, 2023Severity High Analysis Summary CVE-2023-42753 Linux Kernel could allow a local authenticated attacker to execute arbitrary code on the system, caused by an integer underflow due […]September 25, 2023Severity Medium Analysis Summary AsyncRAT is an open-source tool designed for remote monitoring via encrypted connections. However, it could be utilized by threat actors as it […]September 22, 2023Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]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 – Apache OFBiz IDOR Multiple Security Vulnerabilities
July 17, 2020Rewterz Threat Alert – Try2Cry Ransomware – IOCs
July 18, 2020
Severity
Medium
Analysis Summary
The Tetrade is coined for four large banking trojan families created, developed and spread by Brazilian threat actors on a global level. Brazilian banking trojans have evolved greatly, with hackers adopting techniques for bypassing detection, creating highly modular and obfuscated malware, and using a very complex execution flow, which makes analysis a painful, tricky process. These four banking trojan families: Guildma, Javali, Melcoz and Grandoreiro, are now fully developed and are expanding abroad. Guildma spreads rely heavily on malspam containing a malicious file in compressed format, attached to the email body. File types vary from Visual Basic Script to LNK. Most of the phishing messages emulate business requests, packages sent over courier services or any other regular corporate subjects, including the COVID-19 pandemic, but always with a corporate appearance.
Impact
- Information Theft
- Unauthorized Remote Access
- Detection Evasion
- Financial Theft
Indicators of Compromise
MD5
- 1b50b1e375244ce5d4e690cf0dbc96d8
- 071d3d6404826c24188dc37872224b3d
- c63b4eb3067d8cb5f2d576bc0777e87d
- aeaf7355604685d4d753d21902ff1c1c
- 4194162fe30a3dca6d8568e72c71ed2d
- 0931a26d44f0e7d70fda9ef86ee203f4
- 0219ef20ab2df29b9b29f8407cf74f1c
SHA-256
- 4457ba582eca79b16186855ff3dd53ae197c886167c7ffd370b9fe9daff656b3
- a739b03a7192828b0da31d077609981bf67912a74470bc19cd7e28c9b44761eb
- 4eb22da818d15108ceebe699116459a79046716ca695ebc81668c042b7557e2e
- 6d27525b615b4bfd10284fda160a454b131ed305d39da4fa640d297316a1225d
- ed9277870a1da0080b7b35f2d6a6b9da931161a9e0e362f2bdbf7456c2f23232
- 49190fbebc01eaab9551957ff90c5151fe9104e8fc31ac4cf6038dcdaad01f25
- 86cd8139c074964554c3f674b6f12ec2fe8d8c0765aa7d77117dc099ccf884d8
SHA1
- c24d8e6e8384f6623ebae9cf35bb6bfeee8cc900
- b35ee8162ca3666ae14d60634ac3f1a438d2d3b5
- 25038daa9f2bd4c0da85ca0a491a0e8ee33649f2
- 8db0f9e9258f7f00861b696c25fa7f7054192eb3
- 6ebc6d5f99aafd855ada683ff208eaaedffa1b93
- 6385cf85ba16376a6d22f019ae97194c5eca00a7
- 2b420bf1a31712098028dcd3651fbef2c66ce802
Remediation
- Block the threat indicators at respective controls.
- Avoid downloading attachments from untrusted emails.