Analysis
- max time kernel
150s - max time network
147s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
28/05/2026, 08:31
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe
- Size 70KB
- Sample260528-key5bact4z
- SHA256 c126a668dc96f0f584ca0bf263b1a3acb3c7ba763b3163e2ec51bff01cf41ae0
- MD5 35a92b32435545b54a51c396dd80a065
- SHA1 ab499af2776d2d12df714c26c2ecc2c9aabd3439
- SHA512 aca42a170decba5f686702b1bb5417279390854bcec76a6938ab66ddd9565772f9e8860ca9708cb6fb9ce89d1de753cb7c904060794a3a94e4a5b67d83b7f871
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16CjgG1dU0DY:bG6YcA/X6Gw8qDxRWP6CMqdUt
- TLSH T13C63A53C7BD61A72D3778AB196F791C7B935B4323912884D44CE43480933F66EDA2A4E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3624-2-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001700000002601f-13.dat CryptoLocker_rule2 behavioral2/memory/3212-17-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3212-19-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3212 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 2026-05-28_35a92b32435545b54a51c396dd80a065_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 3624 wrote to memory of 3212 3624 2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3624 -
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:3212
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 70KB
- SHA256 5da1d061c5aefdfdc40a3a7bcf803c6c5f8dfc945c5058f8f193a8f08845798d
- MD5 2a69864c70fc02a2b6c25b1a2ecdda33
- SHA1 959f41d8f3ee83fd4bb6dcd8528545bdf5b00d5c
- SHA512 992995f8bd42897d162b0b1a7b72cc981593bac2a545678ea05a0d2001faa77d0463cdd969520dfdecfe5299014d477dc4288e1ae9306c828721ab8a6415c735
- SSDEEP 768:bG74zYcgT/Ekd0ryfjSb8qD+7g3Zectbr5+IunYw16CjgG1dU0DP:bG6YcA/X6Gw8qDxRWP6CMqdUu
- TLSH T1FF63A53C7BD61A72D377CAB196F791C7B935B4323912884D44CA43480933F66EDA2A4E
- MD5 SHA1 SHA512 SSDEEP TLSH