General

  • Target

    6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.zip

  • Size

    893KB

  • Sample

    240905-teq85svdla

  • MD5

    5d6be502f725e4cea0b8f23781a8f076

  • SHA1

    10cb18c945183e8bda2e98e1db0d77d8d36147da

  • SHA256

    29debf2f71c08a96261b8fafff530307c26043af570fa5f3302da872e7f560b6

  • SHA512

    bb71c29b7f9e9933019b7f1ae622d307c6e6472b64237cded6ea901e97857ff8deb4ac42ac441269c21da20dd498c53febc48e23925f39d3f589121d09697a1f

  • SSDEEP

    24576:2nAH2Yrsu3TC/1h7+/LEkyQ7CTBfFPbHmrvgppF2HQE:2nAJswTG1d+BCTBN8YpP2wE

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.161.133.245:9898

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-LN5NIY

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

modiloader

C2

https://drive.google.com/u/0/uc?id=1TcSctGVBajYMA7CFDc158wpvqkpxmkhJ&export=download

Targets

    • Target

      6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32.exe

    • Size

      971KB

    • MD5

      212068494b9a5e0238568a842da660da

    • SHA1

      880afab8133a3b62a4e1d87f94bcef846846f024

    • SHA256

      6046803acf690fbb6e646be03c4a59201fe1a96b8791dd4bf8d2bc4c7eeb7d32

    • SHA512

      afd63a289f8c1a5ac2b1ade03c6db1f5a6cc6efa8ddc8c33a7559c699d97df09a00cfff87d366065f39a13643efe0e37bf0049a021c4ec51e27b91f30d6dcaf1

    • SSDEEP

      24576:dBrYKjLhvej6aV9b7w6tt6nWHdCgjuf+lBqA:dZLh+6ac6ttfH3KSq

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Remcos

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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • ModiLoader First Stage

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Abuse Elevation Control Mechanism: Bypass User Account Control

      UAC Bypass Attempt via SilentCleanup Task.

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks