General

  • Target

    4c642a19cdc35181a2ac62acf3255ad0284bdec654e206c3330d447024ae58a7

  • Size

    270KB

  • Sample

    220124-fg27jaccfr

  • MD5

    b991d1cd0c4f87b74aa63e3bf2e53826

  • SHA1

    5be81ca9aa7abd3a5358121b15123c1844ce819c

  • SHA256

    4c642a19cdc35181a2ac62acf3255ad0284bdec654e206c3330d447024ae58a7

  • SHA512

    78baf0af42c3db9bd7d719cc688a70e967f3e0d279481f50ad7952909e9f84e2c804f7ec49dba7a829b1f1d54e409a7dfa9793748585474a5e7f33d22b37aae2

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      4c642a19cdc35181a2ac62acf3255ad0284bdec654e206c3330d447024ae58a7

    • Size

      270KB

    • MD5

      b991d1cd0c4f87b74aa63e3bf2e53826

    • SHA1

      5be81ca9aa7abd3a5358121b15123c1844ce819c

    • SHA256

      4c642a19cdc35181a2ac62acf3255ad0284bdec654e206c3330d447024ae58a7

    • SHA512

      78baf0af42c3db9bd7d719cc688a70e967f3e0d279481f50ad7952909e9f84e2c804f7ec49dba7a829b1f1d54e409a7dfa9793748585474a5e7f33d22b37aae2

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Tasks