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.exe

  • Size

    320KB

  • Sample

    230206-wpsk3afb94

  • MD5

    0ff2cc1a89627650fbd3edeed0a53d02

  • SHA1

    da5c4a1813c20dbf75a9dffe6cdd6d82e94491ab

  • SHA256

    924137ae8f0dfa20b25904747081d640b44c9d313548af166970c55a282ad79f

  • SHA512

    b01cb4b9358947eb14fc16b262f3b63dd252d3b2428243e0212fd0c967642410a31766820b76e81112a407b9e81ba832bf9ec7b0cda21686a578a1613a30dc67

  • SSDEEP

    3072:yBr6yLLi1xR60YhH1qBkD9IPtbejvLhN+jXCHEuQjiMTE5xpRSag7c:ezLu160YzqSSP5IN+jXCkuQj9jaMc

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      file.exe

    • Size

      320KB

    • MD5

      0ff2cc1a89627650fbd3edeed0a53d02

    • SHA1

      da5c4a1813c20dbf75a9dffe6cdd6d82e94491ab

    • SHA256

      924137ae8f0dfa20b25904747081d640b44c9d313548af166970c55a282ad79f

    • SHA512

      b01cb4b9358947eb14fc16b262f3b63dd252d3b2428243e0212fd0c967642410a31766820b76e81112a407b9e81ba832bf9ec7b0cda21686a578a1613a30dc67

    • SSDEEP

      3072:yBr6yLLi1xR60YhH1qBkD9IPtbejvLhN+jXCHEuQjiMTE5xpRSag7c:ezLu160YzqSSP5IN+jXCkuQj9jaMc

    Score
    10/10
    tofseeevasionpersistencetrojanxmrigminer

    • 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