Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file

  • Size

    322KB

  • Sample

    230512-sgzgvsfg31

  • MD5

    c5b9c27223bd12c6e6a0c46e5b411e27

  • SHA1

    68a98a64db6df5bd1feb25288220d186da8fd718

  • SHA256

    8cc3efde2ca85f0d6fcb6c96beb65869fdf024b3f948c1de79194e7988446a48

  • SHA512

    a3d3cdb3b4b1ba88000fc458a4def99973d4a0794b9e85bd0f156643c925f3baaebe9f3a900f8b260568af484671c6c0d541e7403a6d7075a1783088ba630299

  • SSDEEP

    3072:1KPtaVfzJ+xzpxIUgpnvKxvGbqqV7gPCs5lQYFwGfABn/9vOsJp7t:QetWkUIy4bVyCs5ZQ/OI

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      322KB

    • MD5

      c5b9c27223bd12c6e6a0c46e5b411e27

    • SHA1

      68a98a64db6df5bd1feb25288220d186da8fd718

    • SHA256

      8cc3efde2ca85f0d6fcb6c96beb65869fdf024b3f948c1de79194e7988446a48

    • SHA512

      a3d3cdb3b4b1ba88000fc458a4def99973d4a0794b9e85bd0f156643c925f3baaebe9f3a900f8b260568af484671c6c0d541e7403a6d7075a1783088ba630299

    • SSDEEP

      3072:1KPtaVfzJ+xzpxIUgpnvKxvGbqqV7gPCs5lQYFwGfABn/9vOsJp7t:QetWkUIy4bVyCs5ZQ/OI

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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