Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
14/05/2024, 23:28
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe
Resource
win7-20240508-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe
Resource
win10v2004-20240508-en
6 signatures
150 seconds
General
- Target 2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe
- Size 30KB
- Sample240514-3f973sed62
- SHA256 708e38eccbd35305831f5cdb1eca8f5103f6423287b1cf203992ac31996ca4c0
- MD5 abd2b034d9f7a4776256b77e6a449aa4
- SHA1 d0c71375fcb0a96eb6ac71b3e388706a51a84570
- SHA512 aef2162afff3058c6858806b32f58a803793a396c75bb7852230ce124fd7f383ca1591b05b458e3168529a6d6cf366ad978e3c7e7f03c9009537aa298c1e824c
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfF:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xw
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-12.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation hurok.exe - Executes dropped EXE 1 IoCs
pid Process 2528 hurok.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 3280 wrote to memory of 2528 3280 2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe 82 PID 3280 wrote to memory of 2528 3280 2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe 82 PID 3280 wrote to memory of 2528 3280 2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3280 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2528
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 30KB
- SHA256 8a49b711fe11dfc1d7dd514d796c4fec370b815f381297621797a67fb24efdc5
- MD5 7ccf27244b9a4872f9e312364e122091
- SHA1 a751b3f556da402b97f4f9c9f95ffb169df10e66
- SHA512 3301d5596858c9aaa996285244521844098349e6da04e47b960ef1aede6748f1eb316ff2823eaa668d91c522f1f6a543ee72549d93e77a725801b3d859d6bc5a
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfkK:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XG
- MD5 SHA1 SHA512 SSDEEP