Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
10/09/2026, 07:28
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe
- Size 53KB
- Sample260910-ja2tzahp3v
- SHA256 438a85423496aef87e10720527456181a920d1e6b7c935a92a162b7bb6915c20
- MD5 11d32b40fd632671a222358965abebd9
- SHA1 736af65d445473709c6a102b5dfcff0a26019f6f
- SHA512 15233399e983fec1a0d9260f2e4382d35a467f0c3b16bc4016b9e9570e91789f7925493109b7fd47e3a4e9e6b5ea9fa65f0fcdbdaca377341e94410b4ccf8a0a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/xXzqb:bgGYcA/53GAGgIvF9v2ZKqb
- TLSH T1E93312387BE56972E37BCFB586F691C6B935B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4332-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000024540-13.dat CryptoLocker_rule2 behavioral1/memory/1428-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1428-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - 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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation 2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1428 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 2026-09-08_11d32b40fd632671a222358965abebd9_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 4332 wrote to memory of 1428 4332 2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-08_11d32b40fd632671a222358965abebd9_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4332 -
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:1428
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 53KB
- SHA256 d8f38a7321a73568dd03148b098d9b5b20131bc24946a4dbeb0218aca1e722f1
- MD5 b6d7e2f555ac49b0610b90aa0170d331
- SHA1 d66264ceb0441582dd9152c8d2b69e2d07a9e386
- SHA512 f0a9e551100f22615c01e61eedfd8f1e6a81fe6ed30fe45e117895b209642f2647099abbb3b4464f90c1869ad0cbf51c02846704955ed2f6f6d82e044c818047
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/xXzqLc:bgGYcA/53GAGgIvF9v2ZKqLc
- TLSH T1C53312387BE56972E37BCFB586F691C6B935B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH