Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file

  • Size

    302KB

  • Sample

    230501-v8nksahh24

  • MD5

    c47f32f68a1ca3309768b48ec98cd752

  • SHA1

    ab24f2d6a2cacd0b807b2a174e4c43e8d629b32e

  • SHA256

    de3f27526eca92d8bab305d2942fbaf89d96b5fda6467dbf931b373868215b0b

  • SHA512

    747db0d277eac21cdb2f51862fe861e27b444bdae4ed08bcc92a92d27c75c6ee602723fa102a3501f980bea18bd2c9a500113c6e9cf42d752240e145b1bd610d

  • SSDEEP

    3072:Muy7xHO5Ur+3sfGjmvp8hPdJidlfZl8ebAGMR5zODTKchd+OH:xy7xHvrmsejm6d2NZlDAGMHOKcv+y

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      302KB

    • MD5

      c47f32f68a1ca3309768b48ec98cd752

    • SHA1

      ab24f2d6a2cacd0b807b2a174e4c43e8d629b32e

    • SHA256

      de3f27526eca92d8bab305d2942fbaf89d96b5fda6467dbf931b373868215b0b

    • SHA512

      747db0d277eac21cdb2f51862fe861e27b444bdae4ed08bcc92a92d27c75c6ee602723fa102a3501f980bea18bd2c9a500113c6e9cf42d752240e145b1bd610d

    • SSDEEP

      3072:Muy7xHO5Ur+3sfGjmvp8hPdJidlfZl8ebAGMR5zODTKchd+OH:xy7xHvrmsejm6d2NZlDAGMHOKcv+y

    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