General

  • Target

    a46a35a86fcf9a6e8a7cd81c982267bc51511a37a8476db29531d6847d057628

  • Size

    219KB

  • Sample

    221026-s9mc1agbd9

  • MD5

    f2d5d81b512760f3da1591a2f9135fb0

  • SHA1

    7541ae7ccf7a6694433d0e159747584dfe749636

  • SHA256

    a46a35a86fcf9a6e8a7cd81c982267bc51511a37a8476db29531d6847d057628

  • SHA512

    29332e054a122251e12ef351dfdc5cca4424a5f90e4526f286c3e7c581cfa2f5b8da8b139445f293d56c8a87cc7cc2e64a7de53921dd664b2166fc86d7f2f1ad

  • SSDEEP

    3072:KfcugiOwIEvFkIL6V66JrtKI5l2S7yAVRYZXAQyrMvPkwI/5aBGx:5ugspvZL6V6irtG4VRrGvP/I/D

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      a46a35a86fcf9a6e8a7cd81c982267bc51511a37a8476db29531d6847d057628

    • Size

      219KB

    • MD5

      f2d5d81b512760f3da1591a2f9135fb0

    • SHA1

      7541ae7ccf7a6694433d0e159747584dfe749636

    • SHA256

      a46a35a86fcf9a6e8a7cd81c982267bc51511a37a8476db29531d6847d057628

    • SHA512

      29332e054a122251e12ef351dfdc5cca4424a5f90e4526f286c3e7c581cfa2f5b8da8b139445f293d56c8a87cc7cc2e64a7de53921dd664b2166fc86d7f2f1ad

    • SSDEEP

      3072:KfcugiOwIEvFkIL6V66JrtKI5l2S7yAVRYZXAQyrMvPkwI/5aBGx:5ugspvZL6V6irtG4VRrGvP/I/D

    • 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 Enterprise v6

Tasks