Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file

  • Size

    236KB

  • Sample

    230418-a8ebwsae81

  • MD5

    3a3fd09d4e781958df6e15153ec63bb9

  • SHA1

    18801d0dffac6e42c37615f77ef7df3bf195d707

  • SHA256

    97e993ff871f0d3c484ec6059bd63ec6273d82e420aa96bda85062413b7e0609

  • SHA512

    dbb63aa3f318616c1e5bb0510cc046885483e08492d74ec175cce0817aa19393ca7b9e6cc1c722199317a2f44de3e863b771effd3aa6deb36f52ed6b0371fe0c

  • SSDEEP

    3072:eDlY9dNSMxeDGJIBn9lX5WFN9MV2+TcqXt5T7CyNuF:3iMxeDGy9lXc9vbqD7YF

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      236KB

    • MD5

      3a3fd09d4e781958df6e15153ec63bb9

    • SHA1

      18801d0dffac6e42c37615f77ef7df3bf195d707

    • SHA256

      97e993ff871f0d3c484ec6059bd63ec6273d82e420aa96bda85062413b7e0609

    • SHA512

      dbb63aa3f318616c1e5bb0510cc046885483e08492d74ec175cce0817aa19393ca7b9e6cc1c722199317a2f44de3e863b771effd3aa6deb36f52ed6b0371fe0c

    • SSDEEP

      3072:eDlY9dNSMxeDGJIBn9lX5WFN9MV2+TcqXt5T7CyNuF:3iMxeDGy9lXc9vbqD7YF

    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