Rewterz Threat Alert – GuLoader Malspam Campaign – Fresh IOCs
July 28, 2021Rewterz Threat Alert – Oski Data Stealer Malware – Fresh IOCs
July 28, 2021Rewterz Threat Alert – GuLoader Malspam Campaign – Fresh IOCs
July 28, 2021Rewterz Threat Alert – Oski Data Stealer Malware – Fresh IOCs
July 28, 2021Severity
Medium
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
- Data Theft
Indicators of Compromise
MD5
- 73faed5bb16f3a83b591ae259edd300c
- 4839ee608aea4599b133f08aedbc27db
- e071eda90d0e53ace9919357d98281e4
- 88f03a5934a7bc4adf65421f1db97436
- e1c803b57cb1c949b037251a3dbf7d7d
- 4877999ea194338dfe6ad0b7c501afe8
- fd45ab42cffc17209261bff2430c8245
- 204dde66112c50f8579c94f04676fd07
SHA-256
- f51f764b6ee4051c097c29478b9fe1bea52df1be495c236bfc622477533e5ccf
- 1dce3392074fc0c6008724190d19a6a7315af9649268361b99da6c2ac7c124dc
- afc581586580ee675ab9b0cfef4e508b9decebe330dc6a7334534d34fb7d6a2e
- 929804b6bf9b72aaacdf6827d50a4ea221aefc5fec17723fe7f03fe10f83969b
- 5accccfe8695d78110cc9c27d79d56ac280879a0d874bb46c42c2a8baf7fe972
- 107f0cce39dcfa85508fd5d256fa0515b6e27f554628e2ca4400af9dc2a5dcae
- 6afa5e287f69f392b8481a94ebb1729c606a1f1023820e79e942ad40dfe96859
- 58bc40823fc59e6bf37c6d0223f54d3ca6dd6f9740a85c5fba1ff605c80a8f25
SHA-1
- 8b0e290d565d4f0493aba9ffbfb236b7103aa822
- 57c17be46f3b71462a0ed26bfb106ed911fabefa
- f75510c59e43a645702a66702882eeb7ad21bf62
- 55bf6fec983f4278ea8e48618ed7bdda95fe04b8
- efeaac6997f56acb90ed2d28bbcb66929b2002a8
- 41c912ac202c7b590450fd91e4f2ed6faa5b2aff
- d06143966b8ca02db582f5111fc275844796786f
- 57c9a23cb790cae61e0d4287ba91aa07afa2f93d
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.
- Do not download files attached in untrusted emails.