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General

  • Target

    file.exe

  • Size

    214KB

  • Sample

    221217-cjemgaga59

  • MD5

    3d0bc7f66285e2f25ebad65acaef20c9

  • SHA1

    25e5fb81ea1477e48a139faf7df4aecf31c0a6e5

  • SHA256

    ff1135e415ff51c850194f1191636b46e0a39f670a2290b17dde81f2e0e2117f

  • SHA512

    f498d0cd13ce0ed952ca636b1043df72bfb08d372398e7fd1e191b53968f58c3638fb3464b24b161cc571579e9955fdb99c1040bf7ac6c22d00247dbb5bad134

  • SSDEEP

    3072:RsXp5UL+HJHPaTRBx3ZzXgLsNJhNSoDEgPYV89uN4LszAInu40zwUzQRKF+:GYL+HJMFXgQzfZpYV89uN4gzo40M2b

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      214KB

    • MD5

      3d0bc7f66285e2f25ebad65acaef20c9

    • SHA1

      25e5fb81ea1477e48a139faf7df4aecf31c0a6e5

    • SHA256

      ff1135e415ff51c850194f1191636b46e0a39f670a2290b17dde81f2e0e2117f

    • SHA512

      f498d0cd13ce0ed952ca636b1043df72bfb08d372398e7fd1e191b53968f58c3638fb3464b24b161cc571579e9955fdb99c1040bf7ac6c22d00247dbb5bad134

    • SSDEEP

      3072:RsXp5UL+HJHPaTRBx3ZzXgLsNJhNSoDEgPYV89uN4LszAInu40zwUzQRKF+:GYL+HJMFXgQzfZpYV89uN4gzo40M2b

    • 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

    • Checks computer location settings

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

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks