Overview

overview

10

Static

static

10

pacuka.exe

windows7-x64

10

pacuka.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    pacuka.exe

  • Size

    92KB

  • Sample

    240701-tynx5asdqn

  • MD5

    16653b45d28e26bd88f741bd8e62f7a6

  • SHA1

    1bd612b271d4b010ea4f1cab6658afaa15fac347

  • SHA256

    3aae90682e6e388e729b635380876409c38d7fe52a4581d45778258e8378b795

  • SHA512

    bf12f0f4819af831c3b30e4b826167e7e786c75f429fa1434d2c8495d78c2541bf777b00e2205a4eb7b94fc66b72401753ee693ca802a935dac210f7ca00ba0c

  • SSDEEP

    1536:YhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6irT:+hzYTGWVvJ8f2v1TbPzuMsIFSHNThy+9

Score
10/10
remcoshostevasionpersistencerattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

185.254.97.15:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    packu.exe

  • copy_folder

    skid

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %SystemDrive%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %WinDir%\System32

  • mouse_option

    false

  • mutex

    rukbdcxfoo

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Discord

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      pacuka.exe

    • Size

      92KB

    • MD5

      16653b45d28e26bd88f741bd8e62f7a6

    • SHA1

      1bd612b271d4b010ea4f1cab6658afaa15fac347

    • SHA256

      3aae90682e6e388e729b635380876409c38d7fe52a4581d45778258e8378b795

    • SHA512

      bf12f0f4819af831c3b30e4b826167e7e786c75f429fa1434d2c8495d78c2541bf777b00e2205a4eb7b94fc66b72401753ee693ca802a935dac210f7ca00ba0c

    • SSDEEP

      1536:YhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6irT:+hzYTGWVvJ8f2v1TbPzuMsIFSHNThy+9

    Score
    10/10
    remcoshostevasionpersistencerattrojan

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • 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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

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

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