Severity
High
Analysis Summary
In August 2021, Quantum Ransomware was identified for the first time. One of the first access vectors used by the threat actors is the IcedID virus, which uses Cobalt Strike for remote access and leads to data theft and encryption using Quantum Locker. Using phishing emails with an ISO file attached, IcedID gained initial access to the target’s PC. To get beyond email security restrictions, IcedID and ISO archive are a fantastic combination. Cobalt Strike was injected two hours after the infection had begun. Threat actors eventually employed WMI and PsExec to encrypt machines and deploy the Quantum ransomware payload. The attack was completed in less than four hours, which is extremely impressive.
Impact
- Unauthorized Access
- Data Exfiltration
- File Encryption
Indicators Of Compromise
MD5
- e051009b12b37c7ee16e810c135f1fef
- 4a6ceabb2ce1b486398c254a5503b792
- adf0907a6114c2b55349c08251efdf50
- 49513b3b8809312d34bb09bd9ea3eb46
- 350f82de99b8696fea6e189fcd4ca454
SHA-256
- 5bc00ad792d4ddac7d8568f98a717caff9d5ef389ed355a15b892cc10ab2887b
- 4a76a28498b7f391cdc2be73124b4225497232540247ca3662abd9ab2210be36
- 3bb2f8c2d2d1c8da2a2051bd9621099689c5cd0a6b12aa8cb5739759e843e5e6
- 6f6f71fa3a83da86d2aba79c92664d335acb9d581646fa6e30c35e76cf61cbb7
- 84f016ece77ddd7d611ffc0cbb2ce24184aeee3a2fdbb9d44d0837bc533ba238
- c140ae0ae0d71c2ebaf956c92595560e8883a99a3f347dfab2a886a8fb00d4d3
SHA-1
- 415b27cd03d3d701a202924c26d25410ea0974d7
- 08a1c43bd1c63bbea864133d2923755aa2f74440
- aa25ae2f9dbe514169f4526ef4a61c1feeb1386a
- 445294080bf3f58e9aaa3c9bcf1f346bc9b1eccb
- deea45010006c8bde12a800d73475a5824ca2e6f
Remediation
- Block all threat indicators at your respective controls.
- Search for IOCs in your environment.