Overview

overview

10

Static

static

3

b9c0977e3a...ec.exe

windows7-x64

10

b9c0977e3a...ec.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b9c0977e3ab9ae2bde66983f2970013146b51dc0077c573d57b6c8e666652bec

  • Size

    134KB

  • Sample

    240419-cn2ykadh65

  • MD5

    563ca63e6beb5d71e409a5464d1913d7

  • SHA1

    6955b36cc62d8d6ad262554107de09b84629ee30

  • SHA256

    b9c0977e3ab9ae2bde66983f2970013146b51dc0077c573d57b6c8e666652bec

  • SHA512

    9224696ecdacab81872be7261fbb28f4342092fbd385ef59259534e5defb69b67b66171b52f713b858cb3c78cae8c7d7c7afcf2ec0a76caff154a588d83d25ce

  • SSDEEP

    1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKH:xPd4n/M+WLcilrpgGH/GwY87mVmIX3

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

      b9c0977e3ab9ae2bde66983f2970013146b51dc0077c573d57b6c8e666652bec

    • Size

      134KB

    • MD5

      563ca63e6beb5d71e409a5464d1913d7

    • SHA1

      6955b36cc62d8d6ad262554107de09b84629ee30

    • SHA256

      b9c0977e3ab9ae2bde66983f2970013146b51dc0077c573d57b6c8e666652bec

    • SHA512

      9224696ecdacab81872be7261fbb28f4342092fbd385ef59259534e5defb69b67b66171b52f713b858cb3c78cae8c7d7c7afcf2ec0a76caff154a588d83d25ce

    • SSDEEP

      1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKH:xPd4n/M+WLcilrpgGH/GwY87mVmIX3

    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