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

    221129-2gfjesdf99

  • MD5

    1c5e8b2770e2ba132e576e4a2207bddf

  • SHA1

    af2c572e505fa13db28e63073d4d5a955ced03dd

  • SHA256

    c20e1d71b7502e516bc81775264434e349aa2bb52d70cbf9098a036e5f412812

  • SHA512

    6a2214d139ea441bb3cd57503c961597d0da37575cd57741120b02bac34671e9ea91744bb380a381869308568cf5ff8e4ec0db0fd62fbbf6b4b9fc9135acc4fd

  • SSDEEP

    3072:wpLhxKC+4dBSV1POmehbqX9CD/7/0iiOFcgf:Y3KC+xVBegtC38idFcgf

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