Overview

overview

10

Static

static

ccb20ed4f2...b4.exe

windows7_x64

10

ccb20ed4f2...b4.exe

windows10_x64

10

Sharing

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General

  • Target

    ccb20ed4f2e000c0dfea6ffa34bda6b4.exe

  • Size

    782KB

  • Sample

    211022-jyaemabch4

  • MD5

    ccb20ed4f2e000c0dfea6ffa34bda6b4

  • SHA1

    80f1c218c9a4f006ac26d03d834eaa90ebcf4a5d

  • SHA256

    9cf41a9b8963753aa8d20e7f1f3ecea05f5ff876b15487682663d115a676117f

  • SHA512

    188481f6ae3b706d0c73bb137f9d86af7b2a43d43bc55280d06a5caaaa360f1dcbd240da8bcd18f9b2738a26910e2ff559db3fdfcaed13cca947200196bfc10e

Score
10/10
remcoswechatxevasionpersistencerat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

wechatx

C2

grace.adds-only.xyz:1619

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    wechatx.exe

  • copy_folder

    wechat

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    wechatxl

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-79O72O

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    wechat

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Targets

    • Target

      ccb20ed4f2e000c0dfea6ffa34bda6b4.exe

    • Size

      782KB

    • MD5

      ccb20ed4f2e000c0dfea6ffa34bda6b4

    • SHA1

      80f1c218c9a4f006ac26d03d834eaa90ebcf4a5d

    • SHA256

      9cf41a9b8963753aa8d20e7f1f3ecea05f5ff876b15487682663d115a676117f

    • SHA512

      188481f6ae3b706d0c73bb137f9d86af7b2a43d43bc55280d06a5caaaa360f1dcbd240da8bcd18f9b2738a26910e2ff559db3fdfcaed13cca947200196bfc10e

    Score
    10/10
    remcoswechatxevasionpersistencerat

    • Remcos

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

      ratremcos

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks