General

  • Target

    b2de17ad5f92567571c872ed240c49cdaa3557411399b07349b2faa97055d89c

  • Size

    304KB

  • Sample

    220911-hlchsaehcq

  • MD5

    e5aefd1dd4d2eb2e2228e7c8d0fa5dc0

  • SHA1

    900eb178b5ae7b66236439d4269f6f3c1f0ecf35

  • SHA256

    b2de17ad5f92567571c872ed240c49cdaa3557411399b07349b2faa97055d89c

  • SHA512

    40edbec6a75f31e7d5ed56062f57fe6401da2c2c46bd152905d59a3f281661140314c4cabdc923eb33e4173eeb3fd431d793ee8179a5eebddf98e2e271a15048

  • SSDEEP

    6144:MB6Fx3bNAJIZMV3wetNYoN6qxZSV/bAFsnyXVg/Ti1OwccB6QsMahsXv:MG6NJNVxZSV/bksnyl1xUMahw

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      b2de17ad5f92567571c872ed240c49cdaa3557411399b07349b2faa97055d89c

    • Size

      304KB

    • MD5

      e5aefd1dd4d2eb2e2228e7c8d0fa5dc0

    • SHA1

      900eb178b5ae7b66236439d4269f6f3c1f0ecf35

    • SHA256

      b2de17ad5f92567571c872ed240c49cdaa3557411399b07349b2faa97055d89c

    • SHA512

      40edbec6a75f31e7d5ed56062f57fe6401da2c2c46bd152905d59a3f281661140314c4cabdc923eb33e4173eeb3fd431d793ee8179a5eebddf98e2e271a15048

    • SSDEEP

      6144:MB6Fx3bNAJIZMV3wetNYoN6qxZSV/bAFsnyXVg/Ti1OwccB6QsMahsXv:MG6NJNVxZSV/bksnyl1xUMahw

    • 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