Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    file.exe

  • Size

    274KB

  • Sample

    230528-2qhedagg52

  • MD5

    9e8fd9b52cc7c49d4d6f4b06871d4ac3

  • SHA1

    f8fda1b7940328c06fc0624410683379afa0e683

  • SHA256

    689468657a6a412107280d600296af39e1a25c439ad8f838d02dd0de3196bde0

  • SHA512

    a1b3e848f88dcc3e78946a239bf6a9bc095e1cf76944316a17ccd321f60103e4b4b60186fddec7b9161838c6566bfa466c5f45c55e96e50e69f09622d14e0de0

  • SSDEEP

    3072:kEJ3SeUHEbUg295fWPlejybLCuyJAbn1EtGqxqH5Z5w9udc4JQ:pJ3Se1Ug2LWPlJLCuiAb1urMGH

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      274KB

    • MD5

      9e8fd9b52cc7c49d4d6f4b06871d4ac3

    • SHA1

      f8fda1b7940328c06fc0624410683379afa0e683

    • SHA256

      689468657a6a412107280d600296af39e1a25c439ad8f838d02dd0de3196bde0

    • SHA512

      a1b3e848f88dcc3e78946a239bf6a9bc095e1cf76944316a17ccd321f60103e4b4b60186fddec7b9161838c6566bfa466c5f45c55e96e50e69f09622d14e0de0

    • SSDEEP

      3072:kEJ3SeUHEbUg295fWPlejybLCuyJAbn1EtGqxqH5Z5w9udc4JQ:pJ3Se1Ug2LWPlJLCuiAb1urMGH

    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