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

    298KB

  • Sample

    230206-w7q5ysae6y

  • MD5

    778ef465bb35e3be7b9d73d2c5fec1a3

  • SHA1

    9eb4dab3696bed45d73c473fb219ba20b033e8c8

  • SHA256

    d124a72b02038dff86f5724a52f9ce0369a511a841b2f5fdeaa2e9809a872162

  • SHA512

    7537d9112c986701defcdc886aa5348d522d196a138626b05d90f40bf10a7977e4b27e97e9c8b04e65ebf574958b134e3bfc30d9a59017fbd7b9799a2557a820

  • SSDEEP

    3072:Cahb6b0AYLLFaRGn+mQ+MP87/XG1DCK4DFTeKi7uQjiMTE5wVarAa1w:C6bAYLxZzQlPMRK4cKi7uQj9rVarAa

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      298KB

    • MD5

      778ef465bb35e3be7b9d73d2c5fec1a3

    • SHA1

      9eb4dab3696bed45d73c473fb219ba20b033e8c8

    • SHA256

      d124a72b02038dff86f5724a52f9ce0369a511a841b2f5fdeaa2e9809a872162

    • SHA512

      7537d9112c986701defcdc886aa5348d522d196a138626b05d90f40bf10a7977e4b27e97e9c8b04e65ebf574958b134e3bfc30d9a59017fbd7b9799a2557a820

    • SSDEEP

      3072:Cahb6b0AYLLFaRGn+mQ+MP87/XG1DCK4DFTeKi7uQjiMTE5wVarAa1w:C6bAYLxZzQlPMRK4cKi7uQj9rVarAa

    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