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General

  • Target

    file.exe

  • Size

    186KB

  • Sample

    221201-hgdkaagf21

  • MD5

    ff01efd9a32faf896caf2a47462208b4

  • SHA1

    1ca9d0f7a732306e273fa90bb63d84b19f0190a9

  • SHA256

    eb19387896d4cedb4d65a1c97603376051377a420026be5bd14a4b0ec3315d00

  • SHA512

    2a204cc50d39fbbfb584c3ce9bff98898ce1eb53365f09878edfca41ef8b2a74f00f66812aa73ca5e498536ae443f82e89dd0f7c2e4494470f62ebb26fe2d649

  • SSDEEP

    3072:HA9MScArnPrt21KeIqrC5RYl5Z93yDycKXq/Qn4jKKRw+6j4:+MtArp0KeIC5Z9iDy1Xdn4u+M

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      186KB

    • MD5

      ff01efd9a32faf896caf2a47462208b4

    • SHA1

      1ca9d0f7a732306e273fa90bb63d84b19f0190a9

    • SHA256

      eb19387896d4cedb4d65a1c97603376051377a420026be5bd14a4b0ec3315d00

    • SHA512

      2a204cc50d39fbbfb584c3ce9bff98898ce1eb53365f09878edfca41ef8b2a74f00f66812aa73ca5e498536ae443f82e89dd0f7c2e4494470f62ebb26fe2d649

    • SSDEEP

      3072:HA9MScArnPrt21KeIqrC5RYl5Z93yDycKXq/Qn4jKKRw+6j4:+MtArp0KeIC5Z9iDy1Xdn4u+M

    • 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