Analysis
- max time kernel
150s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
25/04/2026, 01:53
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe
- Size 46KB
- Sample260425-cbb7dabw6t
- SHA256 95b141be2d7e0a440b9d9bd005e160c3deaf26882d157b1d2bc68a4397b8caa5
- MD5 710b298923eb88c1782ef5fb91e3125a
- SHA1 91f212b3c665e786941cfdbf987f1cc19b2da54f
- SHA512 1586491f791a47e701d4824f70cad6717ec0c198a1624881255ee973df67f11ecdf6903bba8bf7b7690ff58885a6fe0db23ebd9d9736e8cc9a588688f58dde41
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcX6kK5:bgGYcA/53GAGgIvFS5
- TLSH T1702345387FE62972D37BDFB586F691C6B93578223D16980D40CA53844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1108-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x002600000002b15b-13.dat CryptoLocker_rule2 behavioral2/memory/3968-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3968-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3968 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 2026-04-25_710b298923eb88c1782ef5fb91e3125a_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 1108 wrote to memory of 3968 1108 2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-25_710b298923eb88c1782ef5fb91e3125a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1108 -
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:3968
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 932e3c84a259f32e2b28c560a6aba18ecb3d761d53915ef3ce63f9e76c54ee4d
- MD5 1bddf16db3cd39cfd2bd96b500d624d2
- SHA1 a5a154594a7784f828f31a2a5facf166b412e710
- SHA512 c12c291ceceb5c0ce88f23e0baa23853b591027ebc05702f5d02b64148fdbe428803e91744bfdb7e30a80a86e153755aeed2b1d67fc5ab9216ae121d42ecc77a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcX6kK8:bgGYcA/53GAGgIvFS8
- TLSH T1312344387FE62972D37BDFB586F691C6B93578223D16980D40CA53844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH