Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
10/08/2026, 11:21
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe
- Size 48KB
- Sample260810-nf245ssvft
- SHA256 332a2b3e9eefc28c35d1dbf2423f2aee625cebef4ad5e8c50c4be939edc57103
- MD5 fe080318afebb911b1d7cb242e1be6c2
- SHA1 f699fc0b5ea8bb59af88af96e8f21f33e479d60f
- SHA512 234a323d723d7dab1798f3cc04e294e5475dc3a90862f7ba3b711b982fb5bee07a6984e7075d394b161eae9c772b6a827700ba75c443ccb9aff3deac2380df6a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAE:bgGYcA/53GAGgIvF9v2ZZE
- TLSH T1A82334387FE66972E37BCFB586F651C2B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4072-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3076-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3076 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 2026-08-10_fe080318afebb911b1d7cb242e1be6c2_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 4072 wrote to memory of 3076 4072 2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-10_fe080318afebb911b1d7cb242e1be6c2_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4072 -
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:3076
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 b560b4642cf114913e2ee7dfa7d327d7d52675c680396f26376024d1315a65d6
- MD5 fc2db42f5014bd07c7747da575cad33f
- SHA1 5c7b58d7eb8e688e980dbc52b22b22ccad6ebae2
- SHA512 61663c082abd8b8e1e784509e3871c0c9fce124c24d4ad8f71897eb658ffbce88d2ed26654abbeec40cc9b362b8cc9f1a424ea20336c7814451ddc4cfce7c10f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAi:bgGYcA/53GAGgIvF9v2ZZi
- TLSH T1E13344387FE66972E37BCFB586F651C2B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH