Analysis
- max time kernel
119s - max time network
117s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
08/01/2022, 05:42
General
- Target CacheTask.exe
- Size 10.0MB
- Sample220108-gd2x2adbhp
- SHA256 a2768bd2301f387a40cd9cbfea05af2f5a68791dce758e5ba9db29ff29e74f57
Score
10/10
Malware Config
Extracted
Path
-
C:\Users\Public\Desktop\How to restore your files.txt
Ransom Note
- All of your files have been encrypted. Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software,this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is 0.5 BTC. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country,you are best advised to do a quick google search yourself to find how to buy Bitcoin? Many of our customers have reported these sites to be fast and reliable : Coinmama - https ://www.coinmama.com Bitpanda - https ://www.bitpanda.com Contacts - [email protected] BTC Address: bc1qnwdt2068q2asdxa9etz4epu44pf4z98m7e28l2
Emails
URLs
-
https
Signatures
- Executes dropped EXE 1 IoCs
- Modifies extensions of user files 1 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.
- Sets desktop wallpaper using registry 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\CacheTask.exe"C:\Users\Admin\AppData\Local\Temp\CacheTask.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Public\Documents\cobra.exeC:\Users\Public\Documents\cobra.exe2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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