Overview

overview

10

Static

static

3

#2023-04-0...ON.pdf

windows7-x64

1

#2023-04-0...ON.pdf

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    #2023-04-04 NORTHMASON.pdf

  • Size

    134KB

  • Sample

    230404-rkq48ahd5z

  • MD5

    3849b10c3fc8b2cbc838e9fdf007df59

  • SHA1

    6eb5ca689e20e1b338bebc386755d17a426e523a

  • SHA256

    3197738de2658c3532a95a03d2ab9505e0008b8d09f047756927601415feff15

  • SHA512

    31196d8ecdd10ec55abac514190ac5f588f5ec6b59e180a27d1c1d6becb7fffa34cec245704910778224de919079464120b170ba24a6f66de0d0b88aafa65ddd

  • SSDEEP

    3072:98Rh3Afi+h4P/gsNzvXxjsjNlr+7KX7XjwMR4dy:9YqfiUTOXxjsjjrwKX7XjwMR4dy

Score
10/10
guloaderremcosadobepdfdownloaderlinkpdfpersistencerat

Malware Config

Extracted

Family

remcos

Botnet

AdobePDF

C2

apdfhost.online:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-X1WV4F

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      #2023-04-04 NORTHMASON.pdf

    • Size

      134KB

    • MD5

      3849b10c3fc8b2cbc838e9fdf007df59

    • SHA1

      6eb5ca689e20e1b338bebc386755d17a426e523a

    • SHA256

      3197738de2658c3532a95a03d2ab9505e0008b8d09f047756927601415feff15

    • SHA512

      31196d8ecdd10ec55abac514190ac5f588f5ec6b59e180a27d1c1d6becb7fffa34cec245704910778224de919079464120b170ba24a6f66de0d0b88aafa65ddd

    • SSDEEP

      3072:98Rh3Afi+h4P/gsNzvXxjsjNlr+7KX7XjwMR4dy:9YqfiUTOXxjsjjrwKX7XjwMR4dy

    Score
    10/10
    guloaderremcosadobepdfdownloaderpersistencerat

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Checks QEMU agent file

      Checks presence of QEMU agent, possibly to detect virtualization.

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • 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

5
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks