Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
27/07/2026, 16:20
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe
- Size 4.6MB
- Sample260727-ts8ekshr5v
- SHA256 c7ee3f59bfff76d7846b302d6ed18b728e846a4e37f2f8aaac8ba3dbcf05a942
- MD5 fb9d65dcd811c6f4ebdb76a18e8d54b7
- SHA1 14ee2effd40beefc69d4e674d07584521bda7f34
- SHA512 32ebc2a4fb772239199e6c30a91c0350179e19a7a410b46b4f47982a363c8f39c2b452cff2305618129c589861d88039758921f5ef93435a5baa219b9cb16354
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTF:w/ZFIjBzF/ZFIjBzPEUusF
- TLSH T1A9363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4636-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000024126-13.dat CryptoLocker_rule2 behavioral1/memory/4348-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4348-25-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral1/files/0x000a000000024126-13.dat INDICATOR_EXE_Packed_MPress - 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-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation 2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4348 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 2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_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 4636 wrote to memory of 4348 4636 2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-27_fb9d65dcd811c6f4ebdb76a18e8d54b7_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4636 -
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:4348
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 d453fb53193ea0a41b3abf184239dbdeb9be48da5989494fd9e84a4918af6bf7
- MD5 69b507e6068309572d262dcbd9274889
- SHA1 0ce4357b63651099c6c4c47c6cb84bd60b00e496
- SHA512 b431b1ee1241fd1546eb3cf8eb6f22e89a2f5f928c4b3f9bde5d77480fc55113d25685a77a7d7e226ade9bc60bdde7c864f736f22953385c515782f73ab40bbe
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTC:w/ZFIjBzF/ZFIjBzPEUusC
- TLSH T154363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH