General

  • Target

    0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04

  • Size

    338KB

  • Sample

    231122-ferm1sab99

  • MD5

    cd6e356156ebdd1ab336982ee3033203

  • SHA1

    bf2c44a833f60a5b3d3465d8a0189bdfaa60b851

  • SHA256

    0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04

  • SHA512

    9f0483e5560a16f80fc3a8f96039a591fa64efad0b5d39fd31e9fa2e617289abe6fc611a9e95dbd85207c24ab0f60c4090a36c117b02fcfe4c0a2c3b8d3aa626

  • SSDEEP

    3072:O9xAA69UJ+xOWELaHcHjmZlWLjv6iBnTDEvpDfqxO2Rer2dbp80C:GuUJRWFciZlWfZTDcpoQr2d3

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04

    • Size

      338KB

    • MD5

      cd6e356156ebdd1ab336982ee3033203

    • SHA1

      bf2c44a833f60a5b3d3465d8a0189bdfaa60b851

    • SHA256

      0a731a60eed64ed8a1b2b5617df6d248b02d8a2c7716f13877a4398293fc9e04

    • SHA512

      9f0483e5560a16f80fc3a8f96039a591fa64efad0b5d39fd31e9fa2e617289abe6fc611a9e95dbd85207c24ab0f60c4090a36c117b02fcfe4c0a2c3b8d3aa626

    • SSDEEP

      3072:O9xAA69UJ+xOWELaHcHjmZlWLjv6iBnTDEvpDfqxO2Rer2dbp80C:GuUJRWFciZlWfZTDcpoQr2d3

    • 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)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks