Overview

overview

10

Static

static

1

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file

  • Size

    212KB

  • Sample

    230417-nz43vaff5t

  • MD5

    a28432f1ae1231aa338ca25bb76bca43

  • SHA1

    71f949d29951d3dc188e7553caaec487a114a88f

  • SHA256

    edb6dd6f22989b7d58e3cd4a941cb7bae8c12371f59d9623bad1c6201e75ad72

  • SHA512

    bafc90498131959718497031e8fd72ca6d458d82d28b1a8924984caf33ab1d09eb8d48c7f01019335b3ac7b348d71a562229cf4c8f193889eccee8b3fe820227

  • SSDEEP

    3072:19CDeqA5IRiybXzQy3HD5/062XLV/6bZXoVbFRdLa7222WV65tPcCcqI7iMOre:7ksIRld3D106s3VHdm0PcCcN7iMA

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      212KB

    • MD5

      a28432f1ae1231aa338ca25bb76bca43

    • SHA1

      71f949d29951d3dc188e7553caaec487a114a88f

    • SHA256

      edb6dd6f22989b7d58e3cd4a941cb7bae8c12371f59d9623bad1c6201e75ad72

    • SHA512

      bafc90498131959718497031e8fd72ca6d458d82d28b1a8924984caf33ab1d09eb8d48c7f01019335b3ac7b348d71a562229cf4c8f193889eccee8b3fe820227

    • SSDEEP

      3072:19CDeqA5IRiybXzQy3HD5/062XLV/6bZXoVbFRdLa7222WV65tPcCcqI7iMOre:7ksIRld3D106s3VHdm0PcCcN7iMA

    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