General

  • Target

    f0812f666ec17611266540189fe7699b2ca3a6af103dd9f0f207739221ccfcf2

  • Size

    259KB

  • Sample

    220615-pgbt1sheg2

  • MD5

    b36acc5c9eeb85172b6a2b7825669e44

  • SHA1

    317af2adbad05943cf7344148ff6c56facf0dd6d

  • SHA256

    f0812f666ec17611266540189fe7699b2ca3a6af103dd9f0f207739221ccfcf2

  • SHA512

    0121d3a42ffcfdd36a5f242cf42ce99b5f30dcab4ed6792a6ba2e09d179d4cf3d71602e46d8e255a7317ac651c774cb3914f0e7bdf044254231b2a533b3766af

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      f0812f666ec17611266540189fe7699b2ca3a6af103dd9f0f207739221ccfcf2

    • Size

      259KB

    • MD5

      b36acc5c9eeb85172b6a2b7825669e44

    • SHA1

      317af2adbad05943cf7344148ff6c56facf0dd6d

    • SHA256

      f0812f666ec17611266540189fe7699b2ca3a6af103dd9f0f207739221ccfcf2

    • SHA512

      0121d3a42ffcfdd36a5f242cf42ce99b5f30dcab4ed6792a6ba2e09d179d4cf3d71602e46d8e255a7317ac651c774cb3914f0e7bdf044254231b2a533b3766af

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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