Analysis
- max time kernel
150s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
09/05/2026, 08:25
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe
- Size 69KB
- Sample260509-kbqc1adv21
- SHA256 e03905e8195e076af835209de1b712b48f2381fac6e8f4b0467f371af87f0542
- MD5 3f68b4eda5bb16378382f1cebcfcebff
- SHA1 f57c3d3cdc8d0be6a04316229ce9210c57c69460
- SHA512 db6ab7cc513d61add945a26aba52af063db28147690de6381a4c3ee353f9d11985575609e7ba3afdccb3b69f3afd17426c5d9ce952777aebd8d305b08a7d2746
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16CjgG1dU0DB:bG6YcA/X6Gw8qDxRWP6CMqdUU
- TLSH T13163B63D7BD61A72D3778AB186F791C7B935B4323912884D44CE43880933F66EDA2A4D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4204-2-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001d00000002b1ad-13.dat CryptoLocker_rule2 behavioral2/memory/4000-17-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4000-19-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4000 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 2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_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 4204 wrote to memory of 4000 4204 2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-09_3f68b4eda5bb16378382f1cebcfcebff_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204 -
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:4000
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 69KB
- SHA256 a98c6e7c589b5e5ff14e47902bd6535682babb7d4fca1a8c96ab77ade03ca80f
- MD5 037842b34a5e11b581171182d1d5cc29
- SHA1 d6a321b09722fcbfbbc052701ecd6bc32b0485f2
- SHA512 8439f6b32fdf5e6d6a8e1b095b07db41bb2797b5d253a8635e5d44ec4bf76c7453c34418f6f5f91b9d9c58f96f0da6863f7dd1f7eec377440e5b98bd6a65301d
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16CjgG1dU0Dd:bG6YcA/X6Gw8qDxRWP6CMqdUQ
- TLSH T1AB63B53D7BD61A72D3778AB186F791C7B935B4323912884D44CE43480933F66EDA2A4E
- MD5 SHA1 SHA512 SSDEEP TLSH