Overview

overview

10

Static

static

3

fcd5ab951b...56.exe

windows7-x64

10

fcd5ab951b...56.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    fcd5ab951b1fa70d8b94f97fe8db41773ad305fca956d83f5b85ef7e897e3b56

  • Size

    136KB

  • Sample

    240601-f91t6sbf3v

  • MD5

    a2c75ee3737d4eb28ec953bbfc05e34a

  • SHA1

    8691871ef649b488252955f6507d80c91cff9c74

  • SHA256

    fcd5ab951b1fa70d8b94f97fe8db41773ad305fca956d83f5b85ef7e897e3b56

  • SHA512

    96b86b4cb23f0c17e8cd978f35332607cd5a109ec6f16e87b7b7ef10f2744fe46ddc72ba899eb7f321c56e851993cdef6db997d835f1bc303fb00c58031f9c83

  • SSDEEP

    1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKx:xPd4n/M+WLcilrpgGH/GwY87mVmIX4Q

Score
10/10
remcoshostpersistencerat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000
Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    OfficeUpgrade.exe

  • copy_folder

    OfficeUpgrade

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    Upgrader.dat

  • keylog_flag

    false

  • keylog_folder

    Upgrader

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    req_khauflaoyr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    OfficeUpgrade

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      fcd5ab951b1fa70d8b94f97fe8db41773ad305fca956d83f5b85ef7e897e3b56

    • Size

      136KB

    • MD5

      a2c75ee3737d4eb28ec953bbfc05e34a

    • SHA1

      8691871ef649b488252955f6507d80c91cff9c74

    • SHA256

      fcd5ab951b1fa70d8b94f97fe8db41773ad305fca956d83f5b85ef7e897e3b56

    • SHA512

      96b86b4cb23f0c17e8cd978f35332607cd5a109ec6f16e87b7b7ef10f2744fe46ddc72ba899eb7f321c56e851993cdef6db997d835f1bc303fb00c58031f9c83

    • SSDEEP

      1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKx:xPd4n/M+WLcilrpgGH/GwY87mVmIX4Q

    Score
    10/10
    remcoshostpersistencerat

    • Remcos

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

      ratremcos

    • 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

    • 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

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks