Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
10/09/2026, 02:53
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe
- Size 47KB
- Sample260910-dda8jaeh28
- SHA256 36884a2ffc61b68c1acda84ad930e5ee23f0fefd5b048dd8be3a5bf649df4271
- MD5 c544039b2abd406f1fc72a3ccc3e9443
- SHA1 a347b8aecea8c65fdf83fcd9432962af775bf4a4
- SHA512 62d72a6c0d6bfc2c5fad639712db76491853d85d98750590bccb38b28f788a7d515428cbe63ad46bf6e3fc8181dad07795c2aba48bfd6e8afebe3a4b4c358655
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEh8:bgGYcA/53GAGgIvF7EG
- TLSH T1F32322387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4248-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000024126-13.dat CryptoLocker_rule2 behavioral1/memory/3176-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3176-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000\Control Panel\International\Geo\Nation 2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3176 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 2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_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 4248 wrote to memory of 3176 4248 2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-08_c544039b2abd406f1fc72a3ccc3e9443_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4248 -
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:3176
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 9b5c9df58b4180cc6e65d1d8cd94444d98de8d0a69984910c147f90ee6d5ee0a
- MD5 a6d96c8d3a1ab64d030b74e3f752b4ce
- SHA1 85f2dba24ea37f60ac77b3e61b97daca9ff119bf
- SHA512 be6db64663e99ab1d43fc59cfeb065a276315d6b420e5d7aaa6c8d142eb615f4ed6ba83da11e6333dcca071dc17f99977446f1cc7704c76b492c7043b72a4d3e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhK:bgGYcA/53GAGgIvF7EY
- TLSH T1682322387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH