Analysis
- max time kernel
150s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
17/05/2026, 21:30
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe
- Size 42KB
- Sample260517-1cpe4ac141
- SHA256 b556d25f9ee152a6e1c3bfb18b7fb74acf8ecf6909a87beda726fc63ef57dfa9
- MD5 52e7f2b1f4ac1b84ddff63b946ed4158
- SHA1 d0df0000811e628e2433b58ea249e4592ad1a960
- SHA512 ab7a9cd6c1477c26fc000a116faaac102f35f7792cbd8bf41583fd2f46e735d272853defcd023da0f395ade781c0ca3c3f36557fbcf59a940de8d620359a80d0
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc8Eew:bgGYcA/53GAGgIvFp
- TLSH T14A1353387BD62972D37BDFB586F691C6B975B8223D16880D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2024-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001e0000000004a9-13.dat CryptoLocker_rule2 behavioral2/memory/3144-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3144-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3144 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2024 wrote to memory of 3144 2024 2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-17_52e7f2b1f4ac1b84ddff63b946ed4158_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3144
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 412e5656a8399bc040133bfd00d38263fe2e051a4f0266807d4ca57a85b8b2fe
- MD5 68cfc881a7e986b980a59d474c25c1a9
- SHA1 03e6263cc3a2a48348eb3ec2963aaf150c93acab
- SHA512 7aca7cfe77099ae787efd5e966c2cf22bbb5744c33bdfb131b7029b627b6eaed5bab47937fa2b806409f077d9f76d4d27861fb9aedf24172fde3d10720f23739
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc8EeiK:bgGYcA/53GAGgIvFw
- TLSH T1741353387BD62932D37BDFB586F691C6B975B8223D16980D40CA53844C33F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH