Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    297KB

  • Sample

    230515-a7g2dseb46

  • MD5

    2e6852059d88ea39a455ef121a3fa54d

  • SHA1

    0ec408b337caebec2edc0397670255fc55f50a8e

  • SHA256

    54aa74ef48f5da0112fc02522087700d2b1a77182bb26bd5091a1f4f1adcb952

  • SHA512

    c224297d1d2ee0b2f590419ebabb69a68f50fa6124970fc3f95b0902c6fa656ecdcb3745eeb0700683aaaf8af957f6e2985676e03a7ee7a2926c25af988db2e0

  • SSDEEP

    3072:NpX0GufbSvdBzL40UTsJ1ohXkHIRjOjkru7mNmY0nVTcq5sl8mcJOWVnxHGG:XpuDSvPzL40msJ8XLjOYru7xVKCBtc

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      297KB

    • MD5

      2e6852059d88ea39a455ef121a3fa54d

    • SHA1

      0ec408b337caebec2edc0397670255fc55f50a8e

    • SHA256

      54aa74ef48f5da0112fc02522087700d2b1a77182bb26bd5091a1f4f1adcb952

    • SHA512

      c224297d1d2ee0b2f590419ebabb69a68f50fa6124970fc3f95b0902c6fa656ecdcb3745eeb0700683aaaf8af957f6e2985676e03a7ee7a2926c25af988db2e0

    • SSDEEP

      3072:NpX0GufbSvdBzL40UTsJ1ohXkHIRjOjkru7mNmY0nVTcq5sl8mcJOWVnxHGG:XpuDSvPzL40msJ8XLjOYru7xVKCBtc

    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