Overview

overview

10

Static

static

7d3519a311...96.exe

windows7-x64

10

7d3519a311...96.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    7d3519a3112bac6d47e4a28afa93765ad0fe109d3e203f1f07dfcf8fb84b2396

  • Size

    104KB

  • Sample

    221130-gdkczseg6x

  • MD5

    e8398fe766cdfaec2eedef217ff63878

  • SHA1

    77527197723e8aeee03a8bf0644d71fb6f187142

  • SHA256

    035d4c6bea59c1b9384e736bfba08de6d1b7e8859a6201f727b760624af29c8b

  • SHA512

    6aa4c5f15ac9ab89bacd73fbcc6a83af80969c939bb0e62e20550446ec2a567a0553a2ca653ece443e7d3851e98f3054547a3ac0c527d720f3e70396c258f0ec

  • SSDEEP

    3072:tpLhxKC+4dBSV1POmehbqX9CD/7/0iiOFcg8:j3KC+xVBegtC38idFcg8

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      7d3519a3112bac6d47e4a28afa93765ad0fe109d3e203f1f07dfcf8fb84b2396

    • Size

      146KB

    • MD5

      edeb8cf6ad50b2189148305da1711683

    • SHA1

      a5843da9541016d02e3daf537a3781c9dac0716c

    • SHA256

      7d3519a3112bac6d47e4a28afa93765ad0fe109d3e203f1f07dfcf8fb84b2396

    • SHA512

      8cf6653627e3dcf78d45d12edd93ed27fc052534d4731c6695e4cc6ce7d271aa7f02a94ea5b70c8783c62c4bf4d334681b19213aede987f597558be0dd8be8fa

    • SSDEEP

      3072:AVt0N0vO/6B9v5qJO1POmehbsM6FGUuBi:G9O/6BKJOBe7c78

    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