Analysis
- max time kernel
142s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
12/06/2024, 17:42
General
- Target a1900e34fbf2279d4ff96027156f27b3_JaffaCakes118.exe
- Size 230KB
- Sample240612-v9179stdka
- SHA256 071829bd858ce263733337bd3ccc4a1976a3f582aa50af31815a2edb2a692f01
Score
10/10
Malware Config
Extracted
Path
-
F:\$RECYCLE.BIN\FKRDL-DECRYPT.txt
Ransom Note
- ---= GANDCRAB V5.0 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .FKRDL 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/ddb5ba01b5bd70b2 | 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/ddb5ba01b5bd70b2
Signatures
- Gandcrab
Gandcrab is a Trojan horse that encrypts files on a computer.
- Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Renames multiple (282) 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.
- 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 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).
- 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
- 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\a1900e34fbf2279d4ff96027156f27b3_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a1900e34fbf2279d4ff96027156f27b3_JaffaCakes118.exe"1⤵
- 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
-
C:\Windows\SysWOW64\wbem\wmic.exe"C:\Windows\system32\wbem\wmic.exe" shadowcopy delete2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
FKRDL-DECRYPT.txt
memory/1252-2-0x0000000000540000-0x0000000000640000-memory.dmp
memory/1252-3-0x0000000000400000-0x0000000000436000-memory.dmp
memory/1252-441-0x0000000000400000-0x000000000043F000-memory.dmp
memory/1252-443-0x0000000000540000-0x0000000000640000-memory.dmp
memory/1252-444-0x0000000000400000-0x000000000043F000-memory.dmp
memory/1252-445-0x0000000000400000-0x0000000000436000-memory.dmp