Overview

overview

10

Static

static

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    file.exe
  • Size 221KB
  • Sample221024-z56peaafdm
  • SHA256 d1ae9a3df9ef74df1182b14347b397d3bdf79c2ddfb02cb5051430bfb64eb828
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

  • tofsee

C2

  • svartalfheim.top

  • jotunheim.name

Targets

    • Target
      file.exe
    • Size 221KB
    • SHA256 d1ae9a3df9ef74df1182b14347b397d3bdf79c2ddfb02cb5051430bfb64eb828
    • MD5 SHA1 SHA512 SSDEEP
    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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks