Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    299KB

  • Sample

    230207-bbg7ysgg48

  • MD5

    389e0bbeb62bafda651f89609f6155f1

  • SHA1

    d1a66088ee38a570160c43f294b1e21129a55d0a

  • SHA256

    2f459f27c19518f315b8233ab7af6fdcd04c7c886d11a3117a23e9e28c532e2c

  • SHA512

    ce6f0b55206251d60acd2023f8c363cd07f4840e726e5d245bc765ac6a6ea83da2fe1bf8709ddb81d0baedf94997f584347406100eeb6b8b0752d775508ac0b6

  • SSDEEP

    3072:5nb6blhL62RmhK3XIOAtjtVcT00ppPaO5M4seFd/XFuQjiMTE5jptoia5D:FWhL6l82Be3/5M4scNuQj986ia

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      299KB

    • MD5

      389e0bbeb62bafda651f89609f6155f1

    • SHA1

      d1a66088ee38a570160c43f294b1e21129a55d0a

    • SHA256

      2f459f27c19518f315b8233ab7af6fdcd04c7c886d11a3117a23e9e28c532e2c

    • SHA512

      ce6f0b55206251d60acd2023f8c363cd07f4840e726e5d245bc765ac6a6ea83da2fe1bf8709ddb81d0baedf94997f584347406100eeb6b8b0752d775508ac0b6

    • SSDEEP

      3072:5nb6blhL62RmhK3XIOAtjtVcT00ppPaO5M4seFd/XFuQjiMTE5jptoia5D:FWhL6l82Be3/5M4scNuQj986ia

    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

    • 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

    • Executes dropped EXE

    • 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