General

  • Target

    file.exe

  • Size

    185KB

  • Sample

    221201-qjzjjaeh71

  • MD5

    46a0368623b90692621d9ab902bacfbc

  • SHA1

    6ce6f3e5a1a1f6bb450624e394c6f5eee305956a

  • SHA256

    72cbc64511dbf94a125aea8767aa13d3e1d94bf3b9bf925bebf6da373176099e

  • SHA512

    7c35b8de1c19b7539f496b48fc76f3fe65c9369ae6d23ede820b39cb089bf04bb12a696be5c5f7e9a3d53242eb5a62fae2d1edb85e5f8af6dad56393571dc60a

  • SSDEEP

    3072:sfM4saQssUm5K4GmIASR8iyrCjo4siT/X+azycudPZSBDDAbEaXSB7:LssUIq2/d+VMWIEaXg

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      185KB

    • MD5

      46a0368623b90692621d9ab902bacfbc

    • SHA1

      6ce6f3e5a1a1f6bb450624e394c6f5eee305956a

    • SHA256

      72cbc64511dbf94a125aea8767aa13d3e1d94bf3b9bf925bebf6da373176099e

    • SHA512

      7c35b8de1c19b7539f496b48fc76f3fe65c9369ae6d23ede820b39cb089bf04bb12a696be5c5f7e9a3d53242eb5a62fae2d1edb85e5f8af6dad56393571dc60a

    • SSDEEP

      3072:sfM4saQssUm5K4GmIASR8iyrCjo4siT/X+azycudPZSBDDAbEaXSB7:LssUIq2/d+VMWIEaXg

    • 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