General

  • Target

    324c3e532131a50dcea6e8c6992d0fa92642d1607608595bdf620fec0abf1993

  • Size

    244KB

  • Sample

    220809-a11j6aadgl

  • MD5

    c56137400e24b380053c03742eb4777a

  • SHA1

    f07c571e204377d776f5e045d26aedbda54385f2

  • SHA256

    324c3e532131a50dcea6e8c6992d0fa92642d1607608595bdf620fec0abf1993

  • SHA512

    cde0a44d29b449ac347f9832f33fbce118ef6a391d0b8774b4e0b6706e5cb2c9c5374504fc4f522822d95a99f5b29f6a2582825d1d430ec6d2929806b55d40fc

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      324c3e532131a50dcea6e8c6992d0fa92642d1607608595bdf620fec0abf1993

    • Size

      244KB

    • MD5

      c56137400e24b380053c03742eb4777a

    • SHA1

      f07c571e204377d776f5e045d26aedbda54385f2

    • SHA256

      324c3e532131a50dcea6e8c6992d0fa92642d1607608595bdf620fec0abf1993

    • SHA512

      cde0a44d29b449ac347f9832f33fbce118ef6a391d0b8774b4e0b6706e5cb2c9c5374504fc4f522822d95a99f5b29f6a2582825d1d430ec6d2929806b55d40fc

    • 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

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Tasks