Analysis
- max time kernel
150s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
22/05/2026, 09:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe
- Size 44KB
- Sample260522-lvlplabt7s
- SHA256 a3a90074b481e1e47d0f5ae91732f82fc28f20b730a5da1dd3613ced042555b6
- MD5 45980f3a8184733455de8f5cfd696c65
- SHA1 2faa84fcf9f7b5d7212b5c5ab176da2c444ce9f7
- SHA512 e161ad5c4f735fa65560a93bc27083e8fd7eeb59f94dccaf134221ac4529bf461a7212c9530111e31b500084e9a813623c6ad43a6c13d0da23b93cfcad3df6e8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NKg1o:bgGYcA/53GAGgIvFWEGo
- TLSH T13B1351387FD62932D37BDFB586F691C6B935B8223D16980D40CA53844833F66EC91A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4492-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001200000002a2be-13.dat CryptoLocker_rule2 behavioral2/memory/944-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/944-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 944 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 2026-05-22_45980f3a8184733455de8f5cfd696c65_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 4492 wrote to memory of 944 4492 2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-22_45980f3a8184733455de8f5cfd696c65_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4492 -
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:944
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 44KB
- SHA256 725560359075e04573cf8f01426fe71933f2d52402feb22a6ab0ab4c16d93356
- MD5 e3ba5db4d6c6c837f008a187df90abb4
- SHA1 bd4405e3f22fda9d4209cb78b6bb965979189ef8
- SHA512 992335849162e3faa61e12097c0e5841b6618d20279df49f771b0f791a386a700f9dc238b0f99ff0d81d223cdb3b7d099ca1c7f04b17cdfdeb7e7fa1147e7390
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NKg1/:bgGYcA/53GAGgIvFWEG/
- TLSH T13B1351387FD62932D37BDFB586F691C6B975B8223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH