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Severity
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, 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 exploit, 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.
Most recently this APT targets its victim with a MoM APSCO and SUPARCO Meeting_09 Sept 2022.chm file.
Impact
- Information Theft and Espionage
Indicators of Compromise
MD5
- 16696b82884de21b3ef5a3b27872d53c
SHA-256
- b0f8c8e48d4a1e78550bda551745219613cc3dca7068da86688b95051d7c249e
SHA-1
- fd074c6ea59155ef03f1fb0464fe3af1faf5a4be
URL
- http[:]//novaoutletclub[.]com/drop/fall[.]php?st=%25computername%25*%25username%25%20/qn%20/norestart
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.