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.exe

  • Size

    298KB

  • Sample

    230515-fah53sha81

  • MD5

    98b872988fa30b5ba4d24a280b632d8a

  • SHA1

    efeb96fab9b2e9160b9944cefe1062fc714a5ffa

  • SHA256

    1890d57705b8ac4dc77408a7cc539762f7350a590a688769cb9eca5a8618b361

  • SHA512

    05e80f8bef6fc60ab034011593ab106a6fa77c7d21d27515e92ea8423dd9ae86c5057b4d95beea63f0ac8875fad2037dd147a3d12fa35dbf97c85dc1f9a6e256

  • SSDEEP

    6144:bUuMIPLZ4aqf5BvHIIv+/3GQ2eRcsBtcq:bU7IPl4aaBHZ+/3GQnzBt

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      298KB

    • MD5

      98b872988fa30b5ba4d24a280b632d8a

    • SHA1

      efeb96fab9b2e9160b9944cefe1062fc714a5ffa

    • SHA256

      1890d57705b8ac4dc77408a7cc539762f7350a590a688769cb9eca5a8618b361

    • SHA512

      05e80f8bef6fc60ab034011593ab106a6fa77c7d21d27515e92ea8423dd9ae86c5057b4d95beea63f0ac8875fad2037dd147a3d12fa35dbf97c85dc1f9a6e256

    • SSDEEP

      6144:bUuMIPLZ4aqf5BvHIIv+/3GQ2eRcsBtcq:bU7IPl4aaBHZ+/3GQnzBt

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • Tofsee

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

      trojantofsee

    • 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.

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks