General

  • Target

    61d06bf851691930e040bb472f567fa64a973936bd43fe325096e33b4bc48334

  • Size

    139KB

  • Sample

    220730-yrcczaeah8

  • MD5

    59716c29133bdaf34175ab183a1a7e3c

  • SHA1

    e265094493c86a5a5a2596563cb9c47c592ec599

  • SHA256

    61d06bf851691930e040bb472f567fa64a973936bd43fe325096e33b4bc48334

  • SHA512

    68b05b8a8ca0c40a395de19ed8792c59641155f69e0a9704505a016872de88c5c7f6784f54b0740f0ffb3668bcf85bb263cfc59f7dcdcc50c73444a18976b3eb

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Targets

    • Target

      61d06bf851691930e040bb472f567fa64a973936bd43fe325096e33b4bc48334

    • Size

      139KB

    • MD5

      59716c29133bdaf34175ab183a1a7e3c

    • SHA1

      e265094493c86a5a5a2596563cb9c47c592ec599

    • SHA256

      61d06bf851691930e040bb472f567fa64a973936bd43fe325096e33b4bc48334

    • SHA512

      68b05b8a8ca0c40a395de19ed8792c59641155f69e0a9704505a016872de88c5c7f6784f54b0740f0ffb3668bcf85bb263cfc59f7dcdcc50c73444a18976b3eb

    • Tofsee

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

    • 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.

    • Deletes itself

    • 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