Overview

overview

10

Static

static

10

Backdoor.exe

windows7-x64

10

Backdoor.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Backdoor.exe

  • Size

    92KB

  • Sample

    240328-pqf54aab89

  • MD5

    a772f5389d801f4357b55f5b37c535b7

  • SHA1

    0dceee73824ced52e7b629bb71bdb600ff40d9b1

  • SHA256

    7fd4efb371a7d50d723f7dcda4f4d177482eb703fc94664b53dff7bd3f9293ea

  • SHA512

    9b2904f48ea3ba475db2847190e3d106344db4b75abf388db1ebb2bdb3227565c9b36e35d387e3785bf5aebb1bfa657215ad3a09e96e64c03f8072f87cded0f8

  • SSDEEP

    1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Erm:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+C

Score
10/10
remcoshostpersistenceratspywarestealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

26.210.140.6:5552

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • 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_fwolaheltvnuwks

  • 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.exe

    • Size

      92KB

    • MD5

      a772f5389d801f4357b55f5b37c535b7

    • SHA1

      0dceee73824ced52e7b629bb71bdb600ff40d9b1

    • SHA256

      7fd4efb371a7d50d723f7dcda4f4d177482eb703fc94664b53dff7bd3f9293ea

    • SHA512

      9b2904f48ea3ba475db2847190e3d106344db4b75abf388db1ebb2bdb3227565c9b36e35d387e3785bf5aebb1bfa657215ad3a09e96e64c03f8072f87cded0f8

    • SSDEEP

      1536:4hhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Erm:ehzYTGWVvJ8f2v1TbPzuMsIFSHNThy+C

    Score
    10/10
    remcoshostpersistenceratspywarestealer

    • Modifies WinLogon for persistence

      persistence

    • 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Modifies WinLogon

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

2
T1547.004

Defense Evasion

Modify Registry

3
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks