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

    317KB

  • Sample

    230504-2vhwpsfe84

  • MD5

    a287377cc831c829ac4f1f039a9691b0

  • SHA1

    43c5dff1710c27f71fa53c77d5c53d55d211e974

  • SHA256

    4416e4a4b101caee2b4e13d32e46d99c5c0458f62a8f095680a6df135dcb9bfb

  • SHA512

    982aa1db607c134014e9e5a945172aa0bb4ba0e1fa9d9d062d4b58738d9fe7a9314fe9bd5207832b0bd7af78200e9dcaeff49e494c80745200f5b705292b5ae6

  • SSDEEP

    3072:T8fNxIhB7bkD8Oh/UL8crUiFwfNpkj+ym/465NgPeN9oD5h9y4UHHOx//t:QahkD8OxUL9rUIsXy84U+PevS9FC8t

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      317KB

    • MD5

      a287377cc831c829ac4f1f039a9691b0

    • SHA1

      43c5dff1710c27f71fa53c77d5c53d55d211e974

    • SHA256

      4416e4a4b101caee2b4e13d32e46d99c5c0458f62a8f095680a6df135dcb9bfb

    • SHA512

      982aa1db607c134014e9e5a945172aa0bb4ba0e1fa9d9d062d4b58738d9fe7a9314fe9bd5207832b0bd7af78200e9dcaeff49e494c80745200f5b705292b5ae6

    • SSDEEP

      3072:T8fNxIhB7bkD8Oh/UL8crUiFwfNpkj+ym/465NgPeN9oD5h9y4UHHOx//t:QahkD8OxUL9rUIsXy84U+PevS9FC8t

    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