General

  • Target

    file.exe

  • Size

    297KB

  • Sample

    221227-qgmryseh68

  • MD5

    7373472e77b534039c4db7ae9e391676

  • SHA1

    f59ec4c10959a93fb6beaa9fcd05da50fca835b8

  • SHA256

    cd0a8babb7e0194bb05fdab6016b1a2a1d9afb4f580fa1a6c59af0dc45799715

  • SHA512

    bb5bca4643cccf6651ff710343e980e070b2ff74c21907fc3022317955be321f4327f2b0017f417eb2b70dfa98369b63dda64a58b1d92b2741d4c10cd7609171

  • SSDEEP

    6144:PLSYM+drICWkwnrkV3tc0J58xQ3xDPkMo5zXbAc:PGYMGpSnG9cs58xaxDPyrbA

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      297KB

    • MD5

      7373472e77b534039c4db7ae9e391676

    • SHA1

      f59ec4c10959a93fb6beaa9fcd05da50fca835b8

    • SHA256

      cd0a8babb7e0194bb05fdab6016b1a2a1d9afb4f580fa1a6c59af0dc45799715

    • SHA512

      bb5bca4643cccf6651ff710343e980e070b2ff74c21907fc3022317955be321f4327f2b0017f417eb2b70dfa98369b63dda64a58b1d92b2741d4c10cd7609171

    • SSDEEP

      6144:PLSYM+drICWkwnrkV3tc0J58xQ3xDPkMo5zXbAc:PGYMGpSnG9cs58xaxDPyrbA

    • 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