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Overview

overview

10

Static

static

3

Backdoor.exe

windows7-x64

10

Backdoor.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Backdoor.bat

  • Size

    36KB

  • Sample

    240929-yfn8ds1eqf

  • MD5

    70aadafbc88f381a60171fb21ae4e5ba

  • SHA1

    e7cfd181af802976134b23177087ba5dcd518a64

  • SHA256

    13641bd80132964e830b3961ccf6300358bfab5149aad32571998a98e2413db1

  • SHA512

    19379c0379c5d186514be3faf5839315473d74abe2366f1067fef31fe82300b5f8cf507a58a6e70851e0cb5b76ba4713919ae626232806c953d40a1181146fa1

  • SSDEEP

    768:yNnmZ/8vPlLUdhfJ8v6utFpVsuRregrWChgz/b7Dsr1:Unwu4DejVLyOhgz/Yr

Score
10/10
remcoshostdiscoveryevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

top-max.gl.at.ply.gg:65091

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    winka.exe

  • copy_folder

    winled

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    methfsaf

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_wexxmpxcql

  • 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

      Backdoor.bat

    • Size

      36KB

    • MD5

      70aadafbc88f381a60171fb21ae4e5ba

    • SHA1

      e7cfd181af802976134b23177087ba5dcd518a64

    • SHA256

      13641bd80132964e830b3961ccf6300358bfab5149aad32571998a98e2413db1

    • SHA512

      19379c0379c5d186514be3faf5839315473d74abe2366f1067fef31fe82300b5f8cf507a58a6e70851e0cb5b76ba4713919ae626232806c953d40a1181146fa1

    • SSDEEP

      768:yNnmZ/8vPlLUdhfJ8v6utFpVsuRregrWChgz/b7Dsr1:Unwu4DejVLyOhgz/Yr

    Score
    10/10
    remcoshostdiscoveryevasionpersistencerattrojan

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Adds policy Run key to start application

      persistence

    • 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

    • Modifies WinLogon

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

4
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

6
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
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