Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
27/08/2026, 23:50
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe
- Size 40KB
- Sample260827-3vl4ssbc78
- SHA256 8988b3d5b831331608e6813c54b059f62b7432e7fa870c0f6272673698833720
- MD5 fef76c7b9c1e760940be3161db0a55f4
- SHA1 5e77ece9d1fc2ba0bcecce949fa0c1a3ab77c4f2
- SHA512 c1aa90201e654ef3ce086e5f8dbaf902106214735c31f14c51cfd9c676fda21544bc423860e7752bd1ba0c66b38e5c3807e0ce82a0832be21cae14ec04d52122
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc8i3:bgGYcA/53GAGgIvF/3
- TLSH T1E20362387FD62932D37BDFB586F691C6B935B8223D16880D54CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3412-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000019cb8-13.dat CryptoLocker_rule2 behavioral2/memory/2996-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2996-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2996 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 2026-08-27_fef76c7b9c1e760940be3161db0a55f4_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 3412 wrote to memory of 2996 3412 2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-27_fef76c7b9c1e760940be3161db0a55f4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3412 -
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:2996
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 40KB
- SHA256 a61fc70e79854f596374b5d29653cb19e74b987d4546a2217ed072a2285dfec4
- MD5 de3364ee3219fee32ba92131d1872a46
- SHA1 7f959941a1bc3435520b1e04a0cbf12c8e76164e
- SHA512 d35250e254f2bb6d9e12d8f78c1cc1a9b914fa3561bd4059ab4efa02b49367697920e4481b32b6d632e6975b620a0d1bf31f252bddba7a38a7f3966c99b2ebb1
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc8i9:bgGYcA/53GAGgIvF/9
- TLSH T12D1363387FD62932D37BDFB586F691C6B935B8223D16880D54CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH