General

  • Target

    bfa8277ba08e0631c7d70d913c2b2f56b03cf066e0be1aa77a7c1c54a8b057f1

  • Size

    309KB

  • Sample

    220619-bb98qsehh8

  • MD5

    b2a418ddb96bf50136a38e4b0f0e95e6

  • SHA1

    4de7d3fd8ef7d93a9dfe907d6ce16130e30b1fea

  • SHA256

    bfa8277ba08e0631c7d70d913c2b2f56b03cf066e0be1aa77a7c1c54a8b057f1

  • SHA512

    242e13d5814a6614cd70b2291df14fd9e17da8cc197f4dec983d25b9f98295091bee238dba418cc26539250a44db32c984892a4eff74ecc7032ca0f6c1daac96

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      bfa8277ba08e0631c7d70d913c2b2f56b03cf066e0be1aa77a7c1c54a8b057f1

    • Size

      309KB

    • MD5

      b2a418ddb96bf50136a38e4b0f0e95e6

    • SHA1

      4de7d3fd8ef7d93a9dfe907d6ce16130e30b1fea

    • SHA256

      bfa8277ba08e0631c7d70d913c2b2f56b03cf066e0be1aa77a7c1c54a8b057f1

    • SHA512

      242e13d5814a6614cd70b2291df14fd9e17da8cc197f4dec983d25b9f98295091bee238dba418cc26539250a44db32c984892a4eff74ecc7032ca0f6c1daac96

    • 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