Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
18/08/2026, 12:43
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe
- Size 64KB
- Sample260818-pyex1abl4w
- SHA256 467c0c430ee22f08d0cf805b177fd20ea90daeaf36d93c7cddcc90b3811fe57f
- MD5 e499b072315e7052b91e6d374e9861e1
- SHA1 8214b9b37ad0e63083790be87f1846086897dcdc
- SHA512 02375493ebee203bf9303a4e68c1562591b74684c3473651df43b08e0583ae81f86ecc8d1986b23edb12acc2833333cfc3abae84f11e463350c70a911bd72ecb
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16zle:bG6YcA/X6Gw8qDxRWP6Je
- TLSH T10453F73D7BC61672D3778AB195F791C3BA36B4323A128C4D44CA03480933F62EDA2A4D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2728-2-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000019c8f-13.dat CryptoLocker_rule2 behavioral2/memory/124-18-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/124-20-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 124 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 2026-08-18_e499b072315e7052b91e6d374e9861e1_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 2728 wrote to memory of 124 2728 2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-18_e499b072315e7052b91e6d374e9861e1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728 -
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:124
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 64KB
- SHA256 df5ea0919bbb431463270075cffa4b73a96e58be41df62b0e6251fcc4accfe8e
- MD5 5f03dc451c69ecab136bb8d758b94ff2
- SHA1 a6a34af083c51f9bb3354a8adf1a27cb8186e8f5
- SHA512 634ff6a5de81e6ba8140562505a1e731aa1ccf85d24e4bfa5e1f037578859e44aeae8ae7e98585268d5871235f6a0828c1210b8bea32c5530b43bf68982fbd10
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16zlf:bG6YcA/X6Gw8qDxRWP6Jf
- TLSH T1A053F73D7BC61672D3778AB195F791C7BA36B4323A158C4D44CA43480933F62EDA2A4D
- MD5 SHA1 SHA512 SSDEEP TLSH