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.exe

  • Size

    300KB

  • Sample

    230206-3jva2abe9x

  • MD5

    82435e30b2928e8a32c2f20330bee382

  • SHA1

    b4ca528936fa1e9fda728bfc9533d9ffc3db7206

  • SHA256

    cd903b1243722f8e4ebfddbcb37e34449d678831ee454254cefe41bd41e742cc

  • SHA512

    2a451d70a8bf7666d29e4efb24ec34b09a854fbcba491dffc32bbcde51cf91ce098d060cfd4ec3259f8659a574b281db2d8cbf03028d8698645ba8ea5128ec92

  • SSDEEP

    3072:C5Mb6bGoL9DRGhqShWy4uVfto16XVk1D04h5Tk3Qh6CYuQjiMTE5Yrea6Zi:COFoL9gccWlmtbmLt6duQj9nreaE

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      300KB

    • MD5

      82435e30b2928e8a32c2f20330bee382

    • SHA1

      b4ca528936fa1e9fda728bfc9533d9ffc3db7206

    • SHA256

      cd903b1243722f8e4ebfddbcb37e34449d678831ee454254cefe41bd41e742cc

    • SHA512

      2a451d70a8bf7666d29e4efb24ec34b09a854fbcba491dffc32bbcde51cf91ce098d060cfd4ec3259f8659a574b281db2d8cbf03028d8698645ba8ea5128ec92

    • SSDEEP

      3072:C5Mb6bGoL9DRGhqShWy4uVfto16XVk1D04h5Tk3Qh6CYuQjiMTE5Yrea6Zi:COFoL9gccWlmtbmLt6duQj9nreaE

    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