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

    213KB

  • Sample

    230417-vsanzsha3z

  • MD5

    e468614fc58a4100991210b073621dd3

  • SHA1

    c75a31fb2d660bda920034a6c6caecdf1d1f690d

  • SHA256

    e75735f7291fe1d0d38a5f7f8f25eeebcb347619dd1df065ea2ea7cb077e35e8

  • SHA512

    e513e3da86bb5defd047026f1aa6d21c7676a2939eefbd1e3ea1c67cecc0ca486f3f47c67ce5768da33d0b480eec4f4b98b99c60b39213b3988efbdbb9fbe358

  • SSDEEP

    3072:2g8L7IZulOSCTwH+3AufD3wmLK2z4sOYwkYrW5B51zI7iMWkv:A0ulO6ArfLKwdZ07iMFv

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      file

    • Size

      213KB

    • MD5

      e468614fc58a4100991210b073621dd3

    • SHA1

      c75a31fb2d660bda920034a6c6caecdf1d1f690d

    • SHA256

      e75735f7291fe1d0d38a5f7f8f25eeebcb347619dd1df065ea2ea7cb077e35e8

    • SHA512

      e513e3da86bb5defd047026f1aa6d21c7676a2939eefbd1e3ea1c67cecc0ca486f3f47c67ce5768da33d0b480eec4f4b98b99c60b39213b3988efbdbb9fbe358

    • SSDEEP

      3072:2g8L7IZulOSCTwH+3AufD3wmLK2z4sOYwkYrW5B51zI7iMWkv:A0ulO6ArfLKwdZ07iMFv

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • 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.

    • 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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks