Overview

overview

10

Static

static

3

25ed67b390...ef.exe

windows7-x64

10

25ed67b390...ef.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    097bc3c7d6f6f50a503fdb7a56e22a34.bin

  • Size

    185KB

  • Sample

    230509-bcwrqsfd7t

  • MD5

    2ecc298d75d857c84350001ca25fac8e

  • SHA1

    21ac2c0ccff74938eb289a26f0c81c1742c0dcfd

  • SHA256

    4907fe1b5b8f0bacb1ba9d3267e2669a08349029e354aec803afa9819209cba3

  • SHA512

    7308b40c8d1c1c4f1e3931fa8e0eaf918e1efe4b1ca7a1bcc5a8bd10c67f6cf6c8bcbe726becbdc5f3bb4ea3fedff55d1f784c773f8bab412e9a9209ebb36663

  • SSDEEP

    3072:v5MZnfBStZsCRXXLz7WFEKWw0cQQU1tLOB6T/iIjb/eSE6S7PzpfJEUTFatpI10O:K5G5fWyW0XQU1lOo5LeFNCtpcz

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      25ed67b390cafbd1ebcebed4c9cad13c38e6998c45e501e23d6652ac04bb69ef.exe

    • Size

      312KB

    • MD5

      097bc3c7d6f6f50a503fdb7a56e22a34

    • SHA1

      bc801204c76b73ee9e66a9a7bdffd856965604e0

    • SHA256

      25ed67b390cafbd1ebcebed4c9cad13c38e6998c45e501e23d6652ac04bb69ef

    • SHA512

      7dedbefbe0a0af1d1541374a1a8916eb45d6037c15b8ae36ed28c4dfc0a9d22f5062b584b856b8d32cf5d675f1a718b31b029dc5abcea4c40d8925ae42f05eea

    • SSDEEP

      3072:6AX8ODio3+FCLQbFK+OCQ/KbqAjxBn7UJIdg6hO3Vd+eVRg/5wcw3P3XqT:vPDl5L0FKBDKbzBYd6upvG

    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