General

  • Target

    26fecf1195260776450f0fc1a4a7faa5e2de5910bbcfbe606b02fe8a3c8f9d6f

  • Size

    313KB

  • Sample

    220620-pf8scsdadk

  • MD5

    ecab8bbbca913bf3ded8d146df4e0f1a

  • SHA1

    b01463b47f9c7df353c8178c91b0fadbfcc06556

  • SHA256

    26fecf1195260776450f0fc1a4a7faa5e2de5910bbcfbe606b02fe8a3c8f9d6f

  • SHA512

    2b726f7cf9ccbe840a2cd96257fa343ef321879564b66a8100b718cf2d2abc600cdaa4cad4294aead4c3fa43924703b16537bb6bf98e91817be9d54c37ed11b5

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      26fecf1195260776450f0fc1a4a7faa5e2de5910bbcfbe606b02fe8a3c8f9d6f

    • Size

      313KB

    • MD5

      ecab8bbbca913bf3ded8d146df4e0f1a

    • SHA1

      b01463b47f9c7df353c8178c91b0fadbfcc06556

    • SHA256

      26fecf1195260776450f0fc1a4a7faa5e2de5910bbcfbe606b02fe8a3c8f9d6f

    • SHA512

      2b726f7cf9ccbe840a2cd96257fa343ef321879564b66a8100b718cf2d2abc600cdaa4cad4294aead4c3fa43924703b16537bb6bf98e91817be9d54c37ed11b5

    • 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 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

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks