Overview

overview

10

Static

static

3

cfb4e7b083...51.exe

windows7-x64

10

cfb4e7b083...51.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    JaffaCakes118_57808e8e73a208f17c7dac4f72f70f28246702da963b1a4c81d660644fea15dc

  • Size

    382KB

  • Sample

    241225-1abffsymdm

  • MD5

    0d32c9af2af6656e3dac60625a9b3932

  • SHA1

    992eb6312ce6c0ebf1cb4547fd6407fd33c3b887

  • SHA256

    57808e8e73a208f17c7dac4f72f70f28246702da963b1a4c81d660644fea15dc

  • SHA512

    dfbd793659a55cc98e7e283b64c87c9d0989b130aa85521cd99c32a0d7b49a1d1b1656eeeaa4e00ca5d6da4b7f4626b4ad0140b31e19f176cd6f6c86c1405a8b

  • SSDEEP

    6144:YgwvsM1N7RlRIQYMMtJFECPvk0w4ZrzGBTrLoMCJieHUyLzWIpLfvt8sIcMKXiDq:YgqsQN9lmQrMtJuV4Z2DZOB3L9A0QHkn

Score
10/10
asyncratremcosdefaulthostdiscoverypersistencerat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:2510

194.5.98.81:2510
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    20

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

194.5.98.81:7123

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    mstsc.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_lfqwkauxufogluh

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      cfb4e7b08343010cf746149e718c8737e4293390d02bc5bf30d46c5e73871651

    • Size

      471KB

    • MD5

      c3564bf107406c43b36f5e9e4c5af650

    • SHA1

      c27ea516aed7e051fcd206ad3606bd8574cfecb7

    • SHA256

      cfb4e7b08343010cf746149e718c8737e4293390d02bc5bf30d46c5e73871651

    • SHA512

      72ee051b13015543881e9a481938b32af3634d67d7842dd42a882f2e2327d3b3fccfa5d18c5263ef43400c8798cbd4b759eb496d7ee5b641ca05e3eb3d1340a6

    • SSDEEP

      6144:+rFicDmVT0o7MqCH4z7492xGyxLoYRzFH8XKKEqQZWIY2FxHCum96oxVnNr9zpCo:+rFz/q7PmyxL7tF4z+xY2if96oxVnF

    Score
    10/10
    asyncratremcosdefaulthostdiscoverypersistencerat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Remcos family

      remcos

    • Async RAT payload

      rat

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks