Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system - submitted
12/06/2024, 18:46
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe
Resource
win7-20240220-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe
Resource
win10v2004-20240611-en
6 signatures
150 seconds
General
- Target 2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe
- Size 97KB
- Sample240612-xe4e9azbkl
- SHA256 b956232247ec8e9f4440dcb23290448b369284fff171a8cf3ca90f63aa29fc93
- MD5 44ad525b6776f50ff33dc31c8de69791
- SHA1 b4bb20941bb70e621b0b43a13c337180ee79127f
- SHA512 c68eb5bfd504ca5bcf15bde09eba4e6d99a21e75bd62475e588f2a0e799d6ae0b767b137a7d3391446cdc3e7b923afab0f7edab907029b95bd12e0adebf9b50b
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMg0:V6a+pOtEvwDpjtz4
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002336e-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000700000002336e-12.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation 2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe - Executes dropped EXE 1 IoCs
pid Process 4820 asih.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2432 wrote to memory of 4820 2432 2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe 80 PID 2432 wrote to memory of 4820 2432 2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe 80 PID 2432 wrote to memory of 4820 2432 2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_44ad525b6776f50ff33dc31c8de69791_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4820
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 97KB
- SHA256 022acf7200884c0ae64e459a89f1a62b407e0a5e6caf3a72e03ee37f7c623e44
- MD5 0aa2d74289a5fa778a9768af5a3edec3
- SHA1 98530a8bd3a5edb661dee6757805cce8c3ba0a36
- SHA512 1360144d61a11e935f1ec7123a776bf1decb8d95b9017ab3e5cdb8d991c3c97fbe58e17b46ebc40508a99115d4385c722407b437b5d9e0f40de585a0bedf8a1f
- SSDEEP 1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMg9h:V6a+pOtEvwDpjtzH
- MD5 SHA1 SHA512 SSDEEP