Overview

overview

10

Static

static

3

1d7b825366...fd.exe

windows7-x64

10

1d7b825366...fd.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    1d7b8253666eb3d60b84a82999d6a9f393fee01876ff6f39dee4bdf304a11bfd

  • Size

    531KB

  • Sample

    240410-lxen3aed9y

  • MD5

    1892b02189311ec4eaa6fe27df2ff812

  • SHA1

    d307df371319b316a3b1f70d62dfcaaf2d201dfd

  • SHA256

    1d7b8253666eb3d60b84a82999d6a9f393fee01876ff6f39dee4bdf304a11bfd

  • SHA512

    12d9890ffb6d35d2703bed448cf83bd08bac348bb3a20afda6e971190c7ddfc7fed5ff9a50d363bbb75ac369235e1e569a738a1d44ff8024937f6b04e449de28

  • SSDEEP

    12288:lPdrsWz1gSPZirKzM2WZP3IJvpNoBKupPJgJWp:llhRxiIW13TV8

Score
10/10
purecrypterremcosremotehostdownloaderloaderpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

79.134.225.7:2050

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • 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-TTGDBF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Targets

    • Target

      1d7b8253666eb3d60b84a82999d6a9f393fee01876ff6f39dee4bdf304a11bfd

    • Size

      531KB

    • MD5

      1892b02189311ec4eaa6fe27df2ff812

    • SHA1

      d307df371319b316a3b1f70d62dfcaaf2d201dfd

    • SHA256

      1d7b8253666eb3d60b84a82999d6a9f393fee01876ff6f39dee4bdf304a11bfd

    • SHA512

      12d9890ffb6d35d2703bed448cf83bd08bac348bb3a20afda6e971190c7ddfc7fed5ff9a50d363bbb75ac369235e1e569a738a1d44ff8024937f6b04e449de28

    • SSDEEP

      12288:lPdrsWz1gSPZirKzM2WZP3IJvpNoBKupPJgJWp:llhRxiIW13TV8

    Score
    10/10
    purecrypterremcosremotehostdownloaderloaderpersistencerat

    • Detect PureCrypter injector

      loader

    • PureCrypter

      PureCrypter is a .NET malware loader first seen in early 2021.

      loaderdownloaderpurecrypter

    • Remcos

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

      ratremcos

    • 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 Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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

Resource Development

Reconnaissance

Tasks