Overview

overview

10

Static

static

3

5eb1da9ebc...78.exe

windows7-x64

10

5eb1da9ebc...78.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    5eb1da9ebcde8b04e00330c70dec2978.exe

  • Size

    265KB

  • Sample

    230513-hn8zrsfg26

  • MD5

    5eb1da9ebcde8b04e00330c70dec2978

  • SHA1

    e2a051b7eafa8b8cba42ef637e659f7762f1a9e8

  • SHA256

    7baa1507e32327e92f27e1bf1fdd4a398298573b81c30c22b704d3fbdc9e3b53

  • SHA512

    2e611f295a85510d95beb4c23bf1549f9d7c89ed3d8a907c1613c0c57345fe840dff0131bbc21e1dbe6d0822746823fdd6e98d5ac6c2bd0c51aa3df308d15314

  • SSDEEP

    3072:17fhk6OZORO7u4jBZz6Ds7Ru2O3tGVbRTXxmS+U5I/9yqp7:Rm6OfpBl6YoPU/TAS

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      5eb1da9ebcde8b04e00330c70dec2978.exe

    • Size

      265KB

    • MD5

      5eb1da9ebcde8b04e00330c70dec2978

    • SHA1

      e2a051b7eafa8b8cba42ef637e659f7762f1a9e8

    • SHA256

      7baa1507e32327e92f27e1bf1fdd4a398298573b81c30c22b704d3fbdc9e3b53

    • SHA512

      2e611f295a85510d95beb4c23bf1549f9d7c89ed3d8a907c1613c0c57345fe840dff0131bbc21e1dbe6d0822746823fdd6e98d5ac6c2bd0c51aa3df308d15314

    • SSDEEP

      3072:17fhk6OZORO7u4jBZz6Ds7Ru2O3tGVbRTXxmS+U5I/9yqp7:Rm6OfpBl6YoPU/TAS

    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