Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
07/08/2026, 01:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe
- Size 42KB
- Sample260807-b96yzade35
- SHA256 cc04bddbb9f38a82d1a4c306dde1bd8d4268e36901f8de66f7630901747e3c17
- MD5 54557ed4623f62fb3bc3e34987c0d503
- SHA1 30ca8e20c1455b253768e311e23fb60b21cc9202
- SHA512 feedc4f417ae71f1ca053e6ef5f46313b322001b56a07208270285fffd82e2a3c1e66670ac276fdc0806e95b8e4030b27ca36d02f6a9acd5a82ed2962ee2386b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCMyC:bgGYcA/53GAGgIvFByC
- TLSH T1511374387FE62972E37BDFB586F691C6B975B8223D16880D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3820-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000187d5-13.dat CryptoLocker_rule2 behavioral2/memory/4264-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4264-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4264 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 2026-08-07_54557ed4623f62fb3bc3e34987c0d503_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 3820 wrote to memory of 4264 3820 2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_54557ed4623f62fb3bc3e34987c0d503_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3820 -
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:4264
-
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 4439e1f3b99a18a5dfa446e24b3f0148a5126e8644ed80b792723cf756ad85d3
- MD5 6d70ebeca64c0b115f8c27754429b0e4
- SHA1 6702ad821b63b1d7612fe1bcc17557339423353d
- SHA512 454faafcfe95bac30ea1bb4716ed4a94292918c2fa0e1652841532e12fb65d7b894fe22f4dc43a0906d2bacecb21596eb28b99e035566e1ff15632661b195350
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCMy9:bgGYcA/53GAGgIvFBy9
- TLSH T1CD1374387FE62972E37BDFB586F691C2B975B8223D16980D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH