Severity
Medium
Analysis Summary
Remcos Remote Control and Surveillance, marketed as a legitimate software by a Germany-based firm Breaking Security for remotely managing Windows systems is now widely used in multiple malicious campaigns by threat actors. Remcos RAT is a sophisticated remote access Trojan (RAT) that can be used to fully control and monitor any Windows computer from XP and onwards. The current campaign utilizes social engineering techniques wherein threat actors are leveraging what’s new and trending worldwide. The phishing email contains a PDF offering CoronaVirus safety measures but in reality, this PDF includes an executable for a REMCOS RAT dropper that runs together with a VBS file executing the malware. The malware also adds
Startup registry key at “HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce” for it to become persistent while the device affected has been restarted.
This Backdoor gathers the following information and sends it to its servers:
- Computer Information (OS version, computer name, system type, product name, primary adapter)
- User information (user access, user profile, user name, user domain)
- Processor information (processor revision number, processor level, processor identifier, processor architecture),
Impact
- Breach of: Victim’s machine information (OS version, computer name, system type, product name, primary adapter).
- User information (user access, user profile, user name, user domain)
- Processor information (processor revision number, processor level, processor identifier, processor architecture)
Indicators of Compromise
MD5
- 1263cd44e9535b572b3a89fee33bd4d2
- 9c26af04ea48f7d88b95a286c66c3f00
- 0e28d111c92b9dba9df90f7cdc72833e
- 494b4cdedec23258be9ddf3978aeaeb6
- 4d0fbb80c91d6c74d2a0510808421bc0
- f3ec2ac5f8cd8dfb46f3a4d14acc4c84
SHA-256
- 61496b1ca9a841752ca0214794c303b7b0a7fb5f5ddb8e26e730c2733fd1af1c
- 44064d93545f38520fcadc58302473ea99087deb716b245fcec3d3bd78b9ba34
- 149a8ecc83f7d5f81f1ec5712bc42f0746690a6651f7716c9822e8f3a17cfb96
- b4cc66299adec81abc9755111a651a774d9855b26804a8654cb70dda7c9062c7
- e69013a3a50ffb58b54a02e4317ad21da89fcadea6d92c0ba83fc1a10d0bb549
- de2346e7683a4ed34d62a2954a38949335e6c1b27085a1cc82c08b0c6aec514e
SHA-1
- 266cbad303036d644b2f503a463d2923aa92a70b
- eaee1d09024ac079821084d7c19de6347e10232f
- 96d8cb8049a861228158df976e2eb77d43a67513
- 861f5d3feaf699f4136f41bb9f3cf820e96a1594
- a3bb7c3fea33c7d3ed92f9b5caf0fdcb22fa31f3
- 45cc84a525944b49a77bb693e2cc6f9e38e7d27c
Remediation
- Block all threat indicators at their respective controls.
- Search for IOCs in your environment