General

  • Target

    file

  • Size

    350KB

  • Sample

    230210-mejezaac7v

  • MD5

    9843513c4bae71444788ec615e3293a7

  • SHA1

    45d1edf0261a0d51500d73393b7c90bbbb409cc8

  • SHA256

    f3dc148e91f2b99c4bff566c2ad3b692e0cf9103ba98d668f8476f362a54dc6d

  • SHA512

    f652ddd7bc80724701a20dab2e84da88d199763a93f6f38441a4c8b2fa823750a690d604b71ed2754a360196498e7f148470901b319a34f57c9191aca32fef2e

  • SSDEEP

    3072:6fauW+PfyscDGK5n+kZkNJLeTM1ZIpkETaOvv6LJsIG9nf6NzG2UUzkE:cdW+fyscDzpAiM12xnaLSXnfWzGmk

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file

    • Size

      350KB

    • MD5

      9843513c4bae71444788ec615e3293a7

    • SHA1

      45d1edf0261a0d51500d73393b7c90bbbb409cc8

    • SHA256

      f3dc148e91f2b99c4bff566c2ad3b692e0cf9103ba98d668f8476f362a54dc6d

    • SHA512

      f652ddd7bc80724701a20dab2e84da88d199763a93f6f38441a4c8b2fa823750a690d604b71ed2754a360196498e7f148470901b319a34f57c9191aca32fef2e

    • SSDEEP

      3072:6fauW+PfyscDGK5n+kZkNJLeTM1ZIpkETaOvv6LJsIG9nf6NzG2UUzkE:cdW+fyscDzpAiM12xnaLSXnfWzGmk

    • 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)

    • 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

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks