Overview

overview

10

Static

static

e9da6f7d09...ed.exe

windows7-x64

10

e9da6f7d09...ed.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e9da6f7d09227a19403a349a2252d2ed.exe

  • Size

    293KB

  • Sample

    220721-ya8d3shfh4

  • MD5

    e9da6f7d09227a19403a349a2252d2ed

  • SHA1

    fa94b24fc9a1357c3cf3c1c0ebac3ff1e6da8e81

  • SHA256

    e64afadba25eededfb3259f10671cf5551e53341e13702489a7c334fcf6514b0

  • SHA512

    501583258564f6f5ee722d6503503a4f56ec46ebd571e8ae8d671fb11462e0c02ff6c3bfd85e6ff709dc0f6d7d1c6d0aa89165c187d8e889efc2a41d2df92a27

Score
10/10
tofseexmrigevasionminerpersistencetrojan

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      e9da6f7d09227a19403a349a2252d2ed.exe

    • Size

      293KB

    • MD5

      e9da6f7d09227a19403a349a2252d2ed

    • SHA1

      fa94b24fc9a1357c3cf3c1c0ebac3ff1e6da8e81

    • SHA256

      e64afadba25eededfb3259f10671cf5551e53341e13702489a7c334fcf6514b0

    • SHA512

      501583258564f6f5ee722d6503503a4f56ec46ebd571e8ae8d671fb11462e0c02ff6c3bfd85e6ff709dc0f6d7d1c6d0aa89165c187d8e889efc2a41d2df92a27

    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