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
05/08/2026, 00:55
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe
- Size 41KB
- Sample260805-a98bcssvds
- SHA256 bd962499ce08590702be54c136387fe25e658e5dc4514eb2608a6720ecf246cb
- MD5 550bd0d63d29cda203f0626cfdaa44ba
- SHA1 ce9422dad3849129ece01eb40e7833d6eb374889
- SHA512 0dfe63f546a7fa15629d161f0f5f023c493a9d8549c258900190ca351ca93b87367a651571d4e38a3d7c0ace295499be6356ebba5f4c1842f4639c943f017d6c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCV:bgGYcA/53GAGgIvF4
- TLSH T19D1375387BE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1188-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cb6-13.dat CryptoLocker_rule2 behavioral2/memory/3208-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3208-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3208 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 2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_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 1188 wrote to memory of 3208 1188 2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_550bd0d63d29cda203f0626cfdaa44ba_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1188 -
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:3208
-
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 e7d2a5a8ba63d208f2a604258658189fc13ac63cfdfdcddab48475fde188b33f
- MD5 1c3ffa105e478e7f515e00ec4458aa42
- SHA1 0f79f51c91e8f27fdca555fbc431e94726e1aaa0
- SHA512 11000d9a14c54ed97e5f67ddeb60b7d179d8e051b5da3980047d9a4d8c3919253e96e58d777e7c9b536e4cd6706be450bbd8971387a6856b0be7ddf925d04246
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCeIlq:bgGYcA/53GAGgIvFSq
- TLSH T1CD1374387BE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH