Analysis

  • max time kernel
    96s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-11-2024 13:46

General

  • Target

    329b3ddbf1c00b7767f0ec39b90eb9f4f8bd98ace60e2f6b6fbfb9adf25e3ef9.exe

  • Size

    99KB

  • MD5

    78efe80384fa759964c9ea8bada3ac8d

  • SHA1

    6300dca046dee2d99f8429bdb9b5f3edc4d5ec1c

  • SHA256

    329b3ddbf1c00b7767f0ec39b90eb9f4f8bd98ace60e2f6b6fbfb9adf25e3ef9

  • SHA512

    faab33afd525d4dee0497096f8cd07c748d98d6b3337d0616740495e6dde2d3b6a4bfb4aadfc2ac032ea5d6e065fc17b0addb4a1fe01878868d39d5d7c282dbc

  • SSDEEP

    3072:UKwH7Fxw0GQi8SHa0jNwriVcJLLfO1MYU:XG3wq70pwrimxLB

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\KCLDN-DECRYPT.txt

Family

gandcrab

Ransom Note
---= GANDCRAB V5.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KCLDN The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/fd4b022afc967c73 | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/fd4b022afc967c73

Signatures

  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

  • Gandcrab family
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (278) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 20 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\329b3ddbf1c00b7767f0ec39b90eb9f4f8bd98ace60e2f6b6fbfb9adf25e3ef9.exe
    "C:\Users\Admin\AppData\Local\Temp\329b3ddbf1c00b7767f0ec39b90eb9f4f8bd98ace60e2f6b6fbfb9adf25e3ef9.exe"
    1⤵
    • Checks computer location settings
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:888
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\KCLDN-DECRYPT.txt

    Filesize

    8KB

    MD5

    264af8726feefdf8c0c1e4a8f8b42d74

    SHA1

    ac16d0249104bad4befecdb11e538f19c433fcee

    SHA256

    7a04dde75d3ba6489a16c949645413cc084b085db56c7047aca0f49a2ebbb4c9

    SHA512

    7f0ece8e05af6152408dcc851941d139e4edf62997ae653ff47fa4572fc61c2bdc4a415d96b90fecaf8409b237b197d7068331c31301cf61ea4fd66964919f28