Overview

overview

10

Static

static

1

Shipping D...XLS.js

windows10-2004-x64

10

Shipping D...XLS.js

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Shipping Doccument_XLS.js
  • Size 170KB
  • Sample260804-k4rrjagf49
  • SHA256 8253bb236e315f60240304ac4c749e59e813399968562deddd692523bcb10b08
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcoserror505discoveryexecutionpersistencerat

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.6 Pro

Botnet

  • Error505

C2

  • 161.248.179.182:37171

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    vvlc

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-76HB0K

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      Shipping Doccument_XLS.js
    • Size 170KB
    • SHA256 8253bb236e315f60240304ac4c749e59e813399968562deddd692523bcb10b08
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    error505discoveryexecutionremcospersistencerat

    • Family: Remcos

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

      ratremcos

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Registers new Windows logon scripts automatically executed at logon.

      persistence

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2
T1059

JavaScript

1
T1059.007

Windows Command Shell

1
T1059.003

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Boot or Logon Initialization Scripts

1
T1037

Logon Script (Windows)

1
T1037.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Boot or Logon Initialization Scripts

1
T1037

Logon Script (Windows)

1
T1037.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks