Overview

overview

10

Static

static

9b178828fc...55.exe

windows7-x64

10

9b178828fc...55.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    9b178828fcd48828da65bb6e1b8a5255.exe

  • Size

    280KB

  • Sample

    220923-gx7bvshccr

  • MD5

    9b178828fcd48828da65bb6e1b8a5255

  • SHA1

    e5256245c1ece1f0d62b6c0b26f0537d296a64ae

  • SHA256

    e9c02698fef6793fda4947b08333052bf142e43377ae6b0b74acd1ab15a59af3

  • SHA512

    6ce9e7f8633d96a2db9a7041c27610b8392706b2ae68d5c69a6634607a2a0c1810c6a1268e4a9e8ebe6f18739a77b38adb377b46fd2b52374e5b99dfbf8033dc

  • SSDEEP

    6144:rIRFmfqLvoLoE9J+eMJsfe5cq5/Xr03rIigavwVfXe:rIRsqLQc+J+eMV5b/w3p5

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      9b178828fcd48828da65bb6e1b8a5255.exe

    • Size

      280KB

    • MD5

      9b178828fcd48828da65bb6e1b8a5255

    • SHA1

      e5256245c1ece1f0d62b6c0b26f0537d296a64ae

    • SHA256

      e9c02698fef6793fda4947b08333052bf142e43377ae6b0b74acd1ab15a59af3

    • SHA512

      6ce9e7f8633d96a2db9a7041c27610b8392706b2ae68d5c69a6634607a2a0c1810c6a1268e4a9e8ebe6f18739a77b38adb377b46fd2b52374e5b99dfbf8033dc

    • SSDEEP

      6144:rIRFmfqLvoLoE9J+eMJsfe5cq5/Xr03rIigavwVfXe:rIRsqLQc+J+eMV5b/w3p5

    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

    • Executes dropped EXE

    • 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

    • 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