Rewterz Threat Alert – Tofsee Malware – Active IOCs
January 10, 2023Rewterz Threat Alert – North Korean APT Kimsuky Aka Black Banshee – Active IOCs
January 10, 2023Rewterz Threat Alert – Tofsee Malware – Active IOCs
January 10, 2023Rewterz Threat Alert – North Korean APT Kimsuky Aka Black Banshee – Active IOCs
January 10, 2023Severity
High
Analysis Summary
APT-17 group aka BITTER APT group has been recently active and targeting sectors in South Asia for information theft and espionage. This group has a history of targeting Energy, Engineering, and Government in South Asia. Spear phishing emails have been the main strike force to target their victims and they’ve been doing it for years now. Many BITTER victims have been exploited through relatively popular Microsoft Office exploits, in order to download and execute a RAT binary from a website. Although the attack vector of this sample remains unknown of yet, this is an indication of their presence again in the South Asian region
As part of an ongoing effort that began in August 2021, this threat actor group known for targeting China, Pakistan, and Saudi Arabia has expanded to set its sights on Bangladeshi government agencies.
With a spear-phishing email, this campaign targets an elite unit of Bangladesh’s government. Emails may contain a malicious RTF document or a Microsoft Excel spreadsheet that is used to exploit known vulnerabilities. The Equation Editor application is automatically launched once the victim opens the maldoc to run the embedded objects containing the shellcode to exploit known vulnerabilities described by CVE-2017-11882, CVE-2018-0798, and CVE-2018-0802 in Microsoft Office, and then downloads and runs the trojan from the hosting server on the victim’s machine. The trojan runs itself in this campaign, but the actor has more RATs and downloaders in their arsenal.
Impact
- Information Theft and Espionage
Indicators of Compromise
Domain Name
- ellearningstore.com
MD5
- b58c0c9a7c0775518573f4538be096e9
- ee77f32d0932037760742b70dc2ec725
SHA-256
- d9c326fde2ad86f74aab127af938734e8755a463f5351d0e88c6658dc7595e78
- 06dd9a7aebe0995b23526f04eabc85db3d2d98def9be58c1012a1280f5aa63f1
SHA-1
- 4577b7ee95f94d9402ff8069ecccbfc0a02427d5
- f8aad0465aa03e52eead6a0dd10794d96ff8023a
Remediation
- Search for IOCs in your environment.
- Block all threat indicators at your respective controls
- Along with network and system hardening, code hardening should be implemented within the organization so that their websites and software are secure. Use testing tools to detect any vulnerabilities in the deployed codes.
- Patch and upgrade any platforms and software timely and make it into a standard security policy. Prioritize patching known exploited vulnerabilities and zero-days.
- Enable antivirus and anti-malware software and update signature definitions in a timely manner. Using a multi-layered protection is necessary to secure vulnerable assets