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
18/08/2026, 23:22
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe
- Size 42KB
- Sample260818-3crassseqg
- SHA256 28fc26cd4b338fba32233643728e5fc64f8fa4ab55b8d6a4eaa8edff6ba73de2
- MD5 8e66403118e37dbef543ed4af610cd2f
- SHA1 0af9001d147e51fe43a796d3bf5f09594edc3636
- SHA512 16bd1594b08b253a3436d9d02a69386846bd84775ca19b3c003b4b2c8215840a6f34eb02a31af8e77698be863f9305776db512ec8fe204512192022674dba991
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCW:bgGYcA/53GAGgIvFX
- TLSH T1C81374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3856-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000001b867-13.dat CryptoLocker_rule2 behavioral2/memory/4176-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4176-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4176 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 2026-08-18_8e66403118e37dbef543ed4af610cd2f_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 3856 wrote to memory of 4176 3856 2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-18_8e66403118e37dbef543ed4af610cd2f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3856 -
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:4176
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 aa9469bea2065614daabfa87ef533485ae676741ba72f9d5083a43400fbbd4c2
- MD5 9b4d8534d25370659795cfa67c365f92
- SHA1 461a9c91c2de955b46504cb1f20ce2fd0a3edc12
- SHA512 21efadbb078eaafcc85d77ffac37a4028bfbf40cfd36d7729a70460a4cf0c2d0a5f7ab7daec2b062476ffc63277f6ec45519600ab63eaf7a4909b22bc8c2d2c1
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCT:bgGYcA/53GAGgIvFC
- TLSH T1D71374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH