Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    191KB

  • Sample

    221201-3g6w2sca59

  • MD5

    002d331f53d2fc2f6045dc40df655e57

  • SHA1

    aca9701153b8775e9c9397815f7f24e6b769e3bf

  • SHA256

    ac9329aa2dab017e973a0d69f196d1442be687dd0ac23da8027003b35fcfb466

  • SHA512

    4fd5b53685c2470b1a98e6564421935aad87d223ced39e3afa9c7133f5a6e893a1617d3b6a5bc4563f4430cd9998ca9da84f122f0a66bbf1ed65a8ea0f64cbe2

  • SSDEEP

    3072:TBps7XAE9XnI5q8sxKc8BI+eU7sJL8jA/PsSA2JRs9E3AZxpR/h:M9X3QBIW7sZ+A/kGwvpb

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      191KB

    • MD5

      002d331f53d2fc2f6045dc40df655e57

    • SHA1

      aca9701153b8775e9c9397815f7f24e6b769e3bf

    • SHA256

      ac9329aa2dab017e973a0d69f196d1442be687dd0ac23da8027003b35fcfb466

    • SHA512

      4fd5b53685c2470b1a98e6564421935aad87d223ced39e3afa9c7133f5a6e893a1617d3b6a5bc4563f4430cd9998ca9da84f122f0a66bbf1ed65a8ea0f64cbe2

    • SSDEEP

      3072:TBps7XAE9XnI5q8sxKc8BI+eU7sJL8jA/PsSA2JRs9E3AZxpR/h:M9X3QBIW7sZ+A/kGwvpb

    Score
    10/10
    tofseexmrigevasionminerpersistencetrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Windows security bypass

      evasiontrojan

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

      minerxmrig

    • XMRig Miner payload

      miner

    • Creates new service(s)

      persistence

    • Executes dropped EXE

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • 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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

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

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks