General

  • Target

    162ea4a8974f5720eb8d19de56fc06cdec45c002fe0aaa10f12ce62a9451cb55

  • Size

    256KB

  • Sample

    220122-rgwwasbfhj

  • MD5

    49350de1aab91a7585153938d177c826

  • SHA1

    9876f009a1b597a5dfc25f21a06e8d363fa10e69

  • SHA256

    162ea4a8974f5720eb8d19de56fc06cdec45c002fe0aaa10f12ce62a9451cb55

  • SHA512

    36281ce50740eb90bf7c2f0787f5ebef124eb7b82b2cad9099eb206eefec4eaa495c4c843a8f96bb5d93d29223ec5ae8e78133255df3de4d96be05b37eac237d

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      162ea4a8974f5720eb8d19de56fc06cdec45c002fe0aaa10f12ce62a9451cb55

    • Size

      256KB

    • MD5

      49350de1aab91a7585153938d177c826

    • SHA1

      9876f009a1b597a5dfc25f21a06e8d363fa10e69

    • SHA256

      162ea4a8974f5720eb8d19de56fc06cdec45c002fe0aaa10f12ce62a9451cb55

    • SHA512

      36281ce50740eb90bf7c2f0787f5ebef124eb7b82b2cad9099eb206eefec4eaa495c4c843a8f96bb5d93d29223ec5ae8e78133255df3de4d96be05b37eac237d

    • Tofsee

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

    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks