Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
19/08/2026, 08:41
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe
- Size 41KB
- Sample260819-kljcfa1bjd
- SHA256 b3e1a79968e92f361670901bdb9a5556b98e4cc2a58807df12b7d95bc07e76e5
- MD5 1cea1de050100ea8490dab9e95172a7a
- SHA1 16df96a513d75b7c115a16b26f7aa515b9663f2d
- SHA512 136b76315321fb124a793e436387f848f67773e66a1eef621cfe270426d0922eec962dd1fe8c28cda0f30481a9d0977fe09df4a094fbc8a41fdff721bc7fbeb8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCiO:bgGYcA/53GAGgIvFw
- TLSH T1241374387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F61DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4636-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e00000001b847-13.dat CryptoLocker_rule2 behavioral2/memory/5944-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5944-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5944 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 2026-08-19_1cea1de050100ea8490dab9e95172a7a_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 5944 4636 2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_1cea1de050100ea8490dab9e95172a7a_cryptolocker_elex.exe"1⤵
- 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:5944
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 bb73e2a1f827b3e79312f739f9c738b40d903077a6178d1c75172588be2f73d8
- MD5 e0426e2d47c648d48a00f08d46f4c64a
- SHA1 b1617a0586ad481e065ce4bff2694c42d687fb9d
- SHA512 1abe448fd91a823d76c671cb15df7c28d6e2ecebfb80cdda98979e1eb6691b2c773b67ac525166d73def956a2b1928db8cf75a8f86ea4af26051462baf56a58f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCi3:bgGYcA/53GAGgIvFV
- TLSH T1191374387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F61DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH