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

  • Size

    213KB

  • Sample

    230417-sfgwesgc9x

  • MD5

    bedb55ac5c140a2a596d9fcbd822e5a6

  • SHA1

    cbd6195cb310f5e29c199c01180a424340266b80

  • SHA256

    45b56889c1a9cc3a57cd8bce999914ae2199808ad38235dc53c3e9d041865a07

  • SHA512

    be312de3dbf98fc18fabc2970ef13c14d291ed528b502f7937b2efd4491b2df5075ae31f878085af67c679099ebebefa9ea38ef086b4d7c4292a93e5c841d798

  • SSDEEP

    3072:QLw69nh47SsG97WGBbZrV8O38yLTMaOGpID5++qI7iMP:Ah47fKL58qjvMaH/k7iM

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      213KB

    • MD5

      bedb55ac5c140a2a596d9fcbd822e5a6

    • SHA1

      cbd6195cb310f5e29c199c01180a424340266b80

    • SHA256

      45b56889c1a9cc3a57cd8bce999914ae2199808ad38235dc53c3e9d041865a07

    • SHA512

      be312de3dbf98fc18fabc2970ef13c14d291ed528b502f7937b2efd4491b2df5075ae31f878085af67c679099ebebefa9ea38ef086b4d7c4292a93e5c841d798

    • SSDEEP

      3072:QLw69nh47SsG97WGBbZrV8O38yLTMaOGpID5++qI7iMP:Ah47fKL58qjvMaH/k7iM

    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