Overview

overview

10

Static

static

10

Backdoor.exe

windows7-x64

10

Backdoor.exe

windows10-2004-x64

10

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General

  • Target

    Backdoor.exe

  • Size

    92KB

  • Sample

    241020-sg1pxswfjm

  • MD5

    64c1e35efba1614b4d6c3d13df87fd21

  • SHA1

    c4896625fafb8f2af036feeba37eccd408721f1e

  • SHA256

    c90a0fb8a56eca48898e4f48ff836c8525530cd298b71f7e2eaae1f52ef230ec

  • SHA512

    66ef1b09553c286085c8008cfae9707b76e2db5f24d061481e9a39c07d8aa9b7d250e10c66b57d30b227738cb5ec7c659b663ef26dfb98c05c637d1b5c7e9335

  • SSDEEP

    1536:IhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Pr3:OhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+0

Score
10/10
remcoshostdiscoveryevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

nxadafer-31488.portmap.host:31488

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    WinDLLExcutor.exe

  • copy_folder

    WinDLL

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    WinDLL

  • keylog_path

    %WinDir%\System32

  • mouse_option

    false

  • mutex

    remcos_scjkzyzdtiyoonh

  • screenshot_crypt

    true

  • screenshot_flag

    true

  • screenshot_folder

    ScreenCapture

  • screenshot_path

    %WinDir%

  • screenshot_time

    30

  • startup_value

    WinDLL

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      Backdoor.exe

    • Size

      92KB

    • MD5

      64c1e35efba1614b4d6c3d13df87fd21

    • SHA1

      c4896625fafb8f2af036feeba37eccd408721f1e

    • SHA256

      c90a0fb8a56eca48898e4f48ff836c8525530cd298b71f7e2eaae1f52ef230ec

    • SHA512

      66ef1b09553c286085c8008cfae9707b76e2db5f24d061481e9a39c07d8aa9b7d250e10c66b57d30b227738cb5ec7c659b663ef26dfb98c05c637d1b5c7e9335

    • SSDEEP

      1536:IhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6Pr3:OhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+0

    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.

    • Deletes itself

    • 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

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