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
05/08/2026, 04:45
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe
- Size 41KB
- Sample260805-fdj7jsap6v
- SHA256 f74f87d550cf0d5c0d5483e9e63f27b2a6b916d285de8d596cdccc0df7ac30fb
- MD5 688a5acce0fc126578713384e6529d91
- SHA1 fcf6d17a5d3d62a247593cd5e030c9f6cd090d90
- SHA512 47fe3ae1c182fe0f3788c6eaf19ff09dde118175d3eab4cb313b682e7789dc5d40a2efcf7ccd01a44f78c7e7502f5d2488db1f1904ccedae45663e69ebb7ff8a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC0:bgGYcA/53GAGgIvFJ
- TLSH T1C81385387FE62972D37BDFB586F691C27975B8223D16880D44CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2000-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/5444-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5444-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5444 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 2026-08-05_688a5acce0fc126578713384e6529d91_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 2000 wrote to memory of 5444 2000 2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_688a5acce0fc126578713384e6529d91_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2000 -
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:5444
-
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 0017d869f543d7421a1ec74734a9502509c8e213485442f23c032807d04c30a6
- MD5 4ad29385351403623a20b0f1a146180b
- SHA1 68deb1e7ee40b97bfee345a21ca44e2ecb12864f
- SHA512 f2a57cdfc6b9439617f323a7739745583b2124c60dc10dc36a4e55f74555a971b34f514c94fd0d02a322564f3caf469858bb4441c86796ec66b850a7391541af
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCK:bgGYcA/53GAGgIvFr
- TLSH T1C41385387FD62972E37BDFB586F691C27975B8223D16880D44CA53844833F62DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH