Rewterz Threat Alert – New Variant of Ursnif Using Invoice Malspam
January 15, 2021Rewterz Threat Alert – Trickbot is Back
January 18, 2021Rewterz Threat Alert – New Variant of Ursnif Using Invoice Malspam
January 15, 2021Rewterz Threat Alert – Trickbot is Back
January 18, 2021Severity
High
Analysis Summary
FormBook is an information-stealer malware that has been active since 2016. The info-stealer malware’s capabilities include stealing credentials, capturing screenshots of victim’s desktop, monitoring clipboard, keystroke logging, clearing browser cookies, downloading and executing files, uploading and removing bots, launching commands via ShellExecute, downloading and unpacking ZIP archive, rebooting and shutting down the system. The attackers behind these email campaigns used a variety of distribution techniques to deliver the FormBook info-stealer, including PDFs, Office Documents, ZIP, RAR, etc. Some of these files are related to quotation requests.
Impact
- Credential theft
- Keystroke logging
- Clear browser cookies
- System Reboot
- Exposure of sensitive data
Indicators of Compromise
MD5
- c0aa1598d486cceab2fdea9a6c41ac0e
- 5e47209313ed350888f81a2e4205b78e
- 8b9f701b5feeb6d1fc76b9a45ef33695
- ff1f8f379a54a669aadd68939075862d
- 420a7a5ed66a75a7ede35f63cab3ab9c
- 18ec4947cbfb82bda1635a855b9b4763
- b86abf15be6a1c7027e7a89ea3d821ca
- eb70a3fb620518b8b05c10b6bd39b60c
SHA-256
- 7aa65f77c48841f9f1545c2e5bb7cb186cd259631c4c449400206f1bb3d16d5e
- 8c59803449026a8dd321b650c71baebb89bb34f6a7f46e2db7ff335fe890f765
- 1498cb2f9fa31c5126db058a10187fa76040789d257ac2b61f4d4bbbe77a986c
- b8386d59d13e0eade159c63fee7a11b074582693f29cdbeacda655df67182595
- 75f2a2a20e73b7e0c53d499b883a403c2b8cfbf17c5923d58e0167daa4c019c1
- 26b068137a8264f4aba9c3617a289417ead13d0c9d53f86a3158c1d113dbf86d
- a078d966a3ac5a7ac639b01ba4d3230c7554d7d75e9e7f59dc35b623aec8dbda
- dfbbbe2eb46a0575def0cf92204de33b435a2680ac2f34ccc7ff6e250fea1717
SHA1
- 21263c3f531b81d949bf15c486bc3aeb16b9bb00
- 23d44a78e0f45d76878fbb8f6c943678abf84e83
- c50e76a3bc942145b6d73e7d0fe3d34f2627df10
- 7ff315d24da1e2f91ded676d254d19823657361e
- 474b0ef1e7dab85ebd7296c408de13a18afd3870
- 6083fb410e0bd21b5bc0f635861758b2747821ab
- 3b1bc94e7565aaf7cbe293dba32fca871ecf704d
- 00cab5cf4149c334a175d7c2c04ec7388bf00dc4
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.
- Do not download files attached in untrusted emails.