Analysis

  • max time kernel
    153s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    28-01-2022 18:10

General

  • Target

    d1a9e47c59b13160bf062ac7d2b2552655e0aef751c1d92258f591114e1a48bf.exe

  • Size

    139KB

  • MD5

    4243cfc0166904e87b754593aeeb1fae

  • SHA1

    7c83213a3bc694c153b90244e5dca74beb4248fc

  • SHA256

    d1a9e47c59b13160bf062ac7d2b2552655e0aef751c1d92258f591114e1a48bf

  • SHA512

    a5d881417edb980303216a53ba056857ba766c7113590cb40ce9c8e7d31718cf04cbf977ec180a39439f71adf3b4797a73584ee86a595f1cc1cd3adac4491706

Malware Config

Extracted

Path

C:\HBNYKAGY-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.4 =--- ***********************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: .HBNYKAGY 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/4ed6267d18763c81 | 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--- wfKD6iudumBkmpL8IRr4U4exEVaoOXLtwDwmOrT1y1YWvOiWMx5GYaRdvZZBToZRqHYJ7ndWpLffTGqHhh5qBJzzs9MC7736UkGSDDniUJJG8/LFF//kmGmoAZAGLo2j5/wd2UrxMJK+iqKhTkS3ArgAxrZOOOiXrbnhbWMkLHQnbYuWlMClYZxYU6SDxpopRo5r292AV1KIZBZV4APBuUHcKSIr2MWMI0O1MKIP2IpKLE2TS5wLmpQodXZhP6M/UPrO1sZzkDbgjYlAG3g8l65nVd0/CBUxKQ7KDJYrtX0vSmnFXg/ykfgtJNiwqfCnqbr85+Bi57EnkRzB5uKm/2A2FutyGtpYZFqEBiHtrhGFEdEboCcE4oG4b6a1Y8ZyGoyp2Q2iuJRzTRoqGlPQJIAJpJFswNcoAhPJnK0+Ce5dALefhGEwg7NrKg3sxA1KwA7+Zi7pDRFO3vXLNeap1wYZJ3RPRgGKcTnY1ljgYn9OmQ3fyiydQRBnybIjlsiw73IIVZjpOjehfFYcP8A6PylN3H9bQ3TCxaZCEv3tKEi+BdhMPpGxHsMOI7+QRdQP94kvV//uurM= ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/4ed6267d18763c81

Signatures

  • Gandcrab

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

  • suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

    suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 8 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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 26 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d1a9e47c59b13160bf062ac7d2b2552655e0aef751c1d92258f591114e1a48bf.exe
    "C:\Users\Admin\AppData\Local\Temp\d1a9e47c59b13160bf062ac7d2b2552655e0aef751c1d92258f591114e1a48bf.exe"
    1⤵
    • Modifies extensions of user files
    • 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:1744
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1052
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2044

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

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1744-54-0x0000000075761000-0x0000000075763000-memory.dmp
    Filesize

    8KB