Overview

overview

10

Static

static

427b8a7043...a8.exe

windows7-x64

10

427b8a7043...a8.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    427b8a704357bad4c684fc4d3e0edda8.exe

  • Size

    293KB

  • Sample

    220719-w12m4sggfn

  • MD5

    427b8a704357bad4c684fc4d3e0edda8

  • SHA1

    08598136547fb36d2784ca6f4126b7ae42333885

  • SHA256

    2f5b289a8dcb26ed9389a49687e513f162ed3145469a5cb90f0aab45c699c3d9

  • SHA512

    78545c33e7758345a367eb9ea4c2eae9dda2bec88e1591d7f8afb5ffe069c5764768f99cc3aa14a4a88e1095dff3fa972904955d39da7aa05271f2c54acf8009

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      427b8a704357bad4c684fc4d3e0edda8.exe

    • Size

      293KB

    • MD5

      427b8a704357bad4c684fc4d3e0edda8

    • SHA1

      08598136547fb36d2784ca6f4126b7ae42333885

    • SHA256

      2f5b289a8dcb26ed9389a49687e513f162ed3145469a5cb90f0aab45c699c3d9

    • SHA512

      78545c33e7758345a367eb9ea4c2eae9dda2bec88e1591d7f8afb5ffe069c5764768f99cc3aa14a4a88e1095dff3fa972904955d39da7aa05271f2c54acf8009

    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