Overview

overview

10

Static

static

Purchase_O...Co.exe

windows7_x64

10

Purchase_O...Co.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    379d64b633cf00cd32b301610d7b8a5808d6f48171b1e5ed93f77ca3a38d0b22

  • Size

    190KB

  • Sample

    220521-b2cedsfher

  • MD5

    ad51f097cb2122fb7ab8f096133c7c57

  • SHA1

    fb50563a7c3362f24b9e5341fc673ac8e73952ef

  • SHA256

    379d64b633cf00cd32b301610d7b8a5808d6f48171b1e5ed93f77ca3a38d0b22

  • SHA512

    6c32e8f1280c0bd2df93bf9e2147bb33dbe6349a47c65dec86fc0163c589771537a778c370d7e3fc7785b3ed7ce8c584af08dbf16759d48c877e6b95e6381758

Score
10/10
remcoscontactsmicrosoftpersistencephishingrat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

CONTACTS

C2

194.5.97.48:2404

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

    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

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-FF7IUM

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

Targets

    • Target

      Purchase_Order#PO7211A20_RFQ_Hangzhou_Zhongniu_Import_Export_Co.exe

    • Size

      275KB

    • MD5

      eb0755f5ec28980f4f492b579db4d5d9

    • SHA1

      1ccb7d6603ecae8ecb19a15201d541b2a2b59eba

    • SHA256

      5bf321a896fab855e09057d986bb3ac868a7d0a2aad468dd5dba498c6ed18357

    • SHA512

      d728d2f367a3cefdbd47509b3a5f9db5dbd0d16f279aa87f17c78122302824c83fbfa948b2d8e9e088569792a6d65975279f565bcd5cf6e4fb545a1cb111ae1e

    Score
    10/10
    remcoscontactsmicrosoftpersistencephishingrat

    • Remcos

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

      ratremcos

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Detected potential entity reuse from brand microsoft.

      phishingmicrosoft

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks