Overview

overview

10

Static

static

d9c3f9bb75...45.exe

windows7-x64

10

d9c3f9bb75...45.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    d9c3f9bb75b83a8715aae0e419e25345

  • Size

    13.8MB

  • Sample

    220809-zy8v7ahhg2

  • MD5

    d9c3f9bb75b83a8715aae0e419e25345

  • SHA1

    697c2d588c11f3f67fce36ff79abadc4b7f98289

  • SHA256

    a3f09390b84ed04bfd2cab6116a91f90db66736347cc6b35b89a1bae5bc0acd3

  • SHA512

    d1aba9fea4e9c41e99290d52603657af87c5c0a9190dc4e3895da3f0a639553437158cecf44627fb5d1c5f491621ba85fc37794d5730b3124afc1929d17a9ad8

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

niflheimr.cn

jotunheim.name

Targets

    • Target

      d9c3f9bb75b83a8715aae0e419e25345

    • Size

      13.8MB

    • MD5

      d9c3f9bb75b83a8715aae0e419e25345

    • SHA1

      697c2d588c11f3f67fce36ff79abadc4b7f98289

    • SHA256

      a3f09390b84ed04bfd2cab6116a91f90db66736347cc6b35b89a1bae5bc0acd3

    • SHA512

      d1aba9fea4e9c41e99290d52603657af87c5c0a9190dc4e3895da3f0a639553437158cecf44627fb5d1c5f491621ba85fc37794d5730b3124afc1929d17a9ad8

    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

    • Executes dropped EXE

    • 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

    • 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