Overview

overview

10

Static

static

5

8b7d3d96cf...0N.exe

windows7-x64

10

8b7d3d96cf...0N.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    8b7d3d96cf4ddcaac7987def486448b0N

  • Size

    2.9MB

  • Sample

    240908-k2wmpszble

  • MD5

    8b7d3d96cf4ddcaac7987def486448b0

  • SHA1

    522d00b0bce708e4d0fa6c85674967dc69067bdc

  • SHA256

    f983f49476e4553938fe10aaf92c44e797d56be702e2ecaeeb65781b00fbf3ef

  • SHA512

    b4730b4e110c7ec471d48b6a36ccebd0f698685d056a95dbd8489d0d3513dd9d3b55a95dfad3286821a2f5a157675e3cd16194b4ad61e51b062191b8b33702f6

  • SSDEEP

    49152:hh+ZkldoPK8Yad7cwj644Mh+ZkldoPK8YaLDNc2:C2cPK8YwjE2cPK8b

Score
10/10
remcoswebmonitorremotehostbackdoordiscoveryinfostealerlinkpdfpersistenceratupx

Malware Config

Extracted

Family

remcos

Version

2.3.0 Pro

Botnet

RemoteHost

C2

daya4659.ddns.net:8282

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    3

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-S1KNPZ

  • 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

  • take_screenshot_title

    wikipedia;solitaire;

Extracted

Family

webmonitor

C2

snpandey4659.wm01.to:443

Attributes
  • config_key

    sFitr5r1ExCJl86X6inyc4qxlzwyw8fK

  • private_key

    t1wG88poq

  • url_path

    /recv4.php

Targets

    • Target

      8b7d3d96cf4ddcaac7987def486448b0N

    • Size

      2.9MB

    • MD5

      8b7d3d96cf4ddcaac7987def486448b0

    • SHA1

      522d00b0bce708e4d0fa6c85674967dc69067bdc

    • SHA256

      f983f49476e4553938fe10aaf92c44e797d56be702e2ecaeeb65781b00fbf3ef

    • SHA512

      b4730b4e110c7ec471d48b6a36ccebd0f698685d056a95dbd8489d0d3513dd9d3b55a95dfad3286821a2f5a157675e3cd16194b4ad61e51b062191b8b33702f6

    • SSDEEP

      49152:hh+ZkldoPK8Yad7cwj644Mh+ZkldoPK8YaLDNc2:C2cPK8YwjE2cPK8b

    Score
    10/10
    remcosremotehostdiscoverylinkpdfpersistenceratwebmonitorbackdoorinfostealerupx

    • Remcos

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

      ratremcos

    • RevcodeRat, WebMonitorRat

      WebMonitor is a remote access tool that you can use from any browser access to control, and monitor your phones, or PCs.

      backdoorratinfostealerwebmonitor

    • WebMonitor payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Adds Run key to start application

      persistence

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks