Overview

overview

10

Static

static

3

19bdd11ed1...e7.exe

windows7-x64

10

19bdd11ed1...e7.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    19bdd11ed161fdce1a8e1dbbf3edfe4fb5273072101e711ee371bc0420afd7e7.exe

  • Size

    203KB

  • Sample

    240413-befhjacb7w

  • MD5

    869031d5e7abc377ebe084c375ffdf1e

  • SHA1

    89c16a7d8f1b95c4c0a72d7407f43686c329ec9f

  • SHA256

    19bdd11ed161fdce1a8e1dbbf3edfe4fb5273072101e711ee371bc0420afd7e7

  • SHA512

    c269ef4bf32fbb350b0c25cc6f6a4e570cb8d1a6d9755636a1d879aa24956ebef6d1b5f5cbdd4e1b95531dd55553e77ff82eff398cc37c676d8d705a7b6d05c4

  • SSDEEP

    6144:1OSGpTE6C8JaksU4gcet422dSnVE492l9:kSMEfUaMce+22YnV

Score
10/10
remcoshostpersistenceratupx

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

185.241.208.113:2404

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

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_tifinqdfds

  • 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

      19bdd11ed161fdce1a8e1dbbf3edfe4fb5273072101e711ee371bc0420afd7e7.exe

    • Size

      203KB

    • MD5

      869031d5e7abc377ebe084c375ffdf1e

    • SHA1

      89c16a7d8f1b95c4c0a72d7407f43686c329ec9f

    • SHA256

      19bdd11ed161fdce1a8e1dbbf3edfe4fb5273072101e711ee371bc0420afd7e7

    • SHA512

      c269ef4bf32fbb350b0c25cc6f6a4e570cb8d1a6d9755636a1d879aa24956ebef6d1b5f5cbdd4e1b95531dd55553e77ff82eff398cc37c676d8d705a7b6d05c4

    • SSDEEP

      6144:1OSGpTE6C8JaksU4gcet422dSnVE492l9:kSMEfUaMce+22YnV

    Score
    10/10
    remcoshostpersistenceratupx

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • UPX dump on OEP (original entry point)

    • detects Windows exceutables potentially bypassing UAC using eventvwr.exe

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • 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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks