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

    230530-kr6d6agf29

  • MD5

    dbbb946f4228bd42954f0fc37607d9e9

  • SHA1

    613aca1b293843322b08583d969d5611e859fd75

  • SHA256

    33131cdcd5d945bb411d7f74e019c16609a9690638bf040b975ae099e6643f63

  • SHA512

    00031955c563ac6546bb38e4e05b2365cbd9564774a5b993674fe01dc82bfd68da5c37bcc6f8d3e07301e47dea1512f85bbe1b2512f866eaa9c0046df50b9c58

  • SSDEEP

    3072:13cVvOWyaFDk3pCz6wIHwEP89c9mNNkRXF/AYLf2VsNO5Jn1DA4zkzPa5M:RcJOWHk3I6wilENNkF7QpSPa5

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      274KB

    • MD5

      dbbb946f4228bd42954f0fc37607d9e9

    • SHA1

      613aca1b293843322b08583d969d5611e859fd75

    • SHA256

      33131cdcd5d945bb411d7f74e019c16609a9690638bf040b975ae099e6643f63

    • SHA512

      00031955c563ac6546bb38e4e05b2365cbd9564774a5b993674fe01dc82bfd68da5c37bcc6f8d3e07301e47dea1512f85bbe1b2512f866eaa9c0046df50b9c58

    • SSDEEP

      3072:13cVvOWyaFDk3pCz6wIHwEP89c9mNNkRXF/AYLf2VsNO5Jn1DA4zkzPa5M:RcJOWHk3I6wilENNkF7QpSPa5

    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