Analysis

  • max time kernel
    112s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 20:10

General

  • Target

    2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe

  • Size

    98KB

  • MD5

    eae1d32442fadc2b737837adada39c54

  • SHA1

    3779ec749f00515e31eb4fff4ae8205f44a6ea80

  • SHA256

    2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a

  • SHA512

    52151027c9ee32466ac34852ac9eec07a06fedab15309ef3a4d3b4138e39b7856dbb798e3b222a4cab8242532e8066001d785c64856830ee1d902139a7c666f0

Malware Config

Extracted

Path

C:\CKTJOXFSMH-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: .CKTJOXFSMH 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/b7b0a78289b6c66 | 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--- lAQAAGgB6B8m26kp18SV23ECNNZ4RozsyviR4G2XWle6mM25efLOeRPfpUBvjEF3ipn0Vl9Yvt2FpGsR2mrVX44YmYs7pFabN3BefbnkkfcNsfSrw7EFvizUi7VUJFHnJEACS65pfRUxOUr2nGjCePRMM3qwjyApTRk/VkJnsB9Nb1BLWX+GmwIDgxyyAAeVMKIitpadDAT7mqZ9TAb5TCl6m2MJZzGEN7x7130SSaMkoz1UBKaGpVbzCdnpLoMb7OcrU+v4rmFx0PHgjTaB3MEv6lBWCnKmH7+KCwQcCi0N2izxqoWNQZnD4350G9EfzSIORDZ1F8r+0bS8s5iUWBS+dQU+vB+UiQaqyBzRS667NP8TOtXaOpcooow9D7VJNzaTy351IUvCfkL/ZMIiOtGBv4eMbtNqc4d2IWo9myHqmL4V63Z3yFzikVFp+pxmwBLeL7JV4/Vn6S0+1YqKo8gZt+sarHdvEA0jwhuuouIvxLLqraXvNmjX+cRvlGKVX2uq/80ec4bYpTDPR5CYWXvpHhjebpDsHmIYIitnzW435G1cdVsi1x8Rx/yW0FVhfRNQWQ6i0d7n1lhfpcgJwT2tcwf+M8QjXSeG7sF+UM7xfdrgm5EaOrlyzV77+Y5UzuHx+Ou+Kp1kLT3Su9SuHu6Cq9eNr2vUlqhbEz2fza1ihQrPBO2gWfe5clJag6/5kGKusvqurz/ct/amWIuTEu87TXdH0HTd35gjVRUC13ArJHEMoJKcxZUugWRxmTeUPa9QCHDWLHg7nsBMiAsYo/9LAf87wmR0Iuuf7TTQJjn85tqYWdY0/G1aVahaGsFQ+L6fYyZa1tLo9ikqVgxhdevXfbtI7VSoIQyjaZHuEbUcYc4l3BWAlL8H/kqombejH5N8ROfxLAZojoALyjAiRdiir/rmgahirmSzqlUdklxAbz8f0QMKeR/o22iZjLmYBAKHR23XwdDSkbLlJaE3mS7IcbxpUF5l4SXyPiFfnVyGWrYk7f930kloeg8slRyMBGgsLOKr7ocp1xJyCIFotDzZbezTfXV6724uhh9HYyNmxDFQJG5Djq1JzuN2fw01fXOOmDPSa63RLCesw06XXavlSJBN2SnZv0S3CUcX0QH/CFtwryX19U01PAy1+rjwX6MyRtcaHGQjpwjWEFo1DvJXVoaGtkPj1LXwjWF2eZJ5mNOvKNnkm+KoT7vM7CURNLSLuNXHWeBRvgTLpLazHTJGLnw9+4+dPoWvzsIxzUA4t+sLemt+UoAqi6xTgAge0diJMBqoRmd4OZPnWWYJB8cVvkidY9Fdj4cBQU3E1q7DGzc59OdpmX6m4lic0xAGoTKTTTVZ/tpJvVItAMkcUMlKiIsX329I6/+Krri1ZlmhIHbYY816AwM+/CjcEmukZMwJJzz9Q5a5+U0Tv6597x/nX+mGz/l+yjJThHQlyxugGwLay7b5R6QIGjVupwki68r9olP4rUXXbyUHmsgaTK6fNms0TDyHm0+h4A+nZ35EYCD6iR6Ys/vhuQrWjgWmT5lAKZ6XW7eEFI+Ijpo6lIuW08ROQktMWNPor4g3MRg3njVJBhs5L81XCM9lEHB0srdky1RRlxGG51iUmN+Oidhq3qboFyAkRjDXD7o54/uqr9HvpuByYt729ndOKaM0qL0tcrwHRmi/+w8BRDLGfj7MKNxWzwRW+Iq2w0lN7zwg2Q1tjpkopEyyxPfl8TGoYr23vbp7r2f+Yx3RRqkcQGNLHgL7HKkIOgNqmIoiigCbe3M7ZdYpPA+65z/XfJJ9CD+Gp3ImzaBp0p8q4rkz8tg54VLh5yecLJS96ia5isIk77HeeGhs00wyRMNMSAGZSViae0pJoJfxq4n/rJ+hsa+HF7IgMjtLPxWb9+jsZPW7nc3mGz1Ioo2ii6lc8K0bohr20s5v4XSYwYSC3kXJPKVjHzLbmFo9bnp7yfUBgzY8houItrZ5zJOwRg9a+zFPYV6kiQXyIZgeHT++zVcoRqFkbcZWL+iekh5oZqAP7mWnqyr8cliViebk7nxERgUNkwVCZK51wp7myOGDG10MFOuMJFWgaTSa6BDeUgkAtYX4MgEL01Y+8aFyfd62SBz3fuBeg7PZmBFrzB9zxuZK5ET5JOZHzj5mWQ/jZ29hdXdof8KmMr9GjJuScUmrcNIUUsPJOewffQ+NyZ6AYYjiY5s8v0A/DfK8hEPA2r/cs617KJc7Vk4bb81ROxYpE/oGdW3YAxsPxPw= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/b7b0a78289b6c66

Signatures

  • Gandcrab

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

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 24 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 28 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe
    "C:\Users\Admin\AppData\Local\Temp\2e818946ec3ef46b1274aa212fdf73c2214ea00f8db0533cbc4fba353a60ce5a.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3492
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3468

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

1
T1107

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3492-130-0x0000000000000000-mapping.dmp