Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/07/2026, 10:05
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe
- Size 51KB
- Sample260720-l4vnvsd19k
- SHA256 219717a15878653fff32af860b1e438eca1b31e3a19424bdfbd0268741c56a92
- MD5 3bb05fdea7916eb7293b20a5f57eeb59
- SHA1 5f19bd4ea4e075bb27b22bd92e38988652f5c2c6
- SHA512 fa3cbb66ff18372df8e3101b6dbfed9d4e804ef8b37017c9e52f83c36a0bf9780c42813b7cb5bc7629a17ab847fe641297d16a2fef09202670c75f10d0fa1788
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1yck:bgGYcA/53GAGgIvFW17O
- TLSH T1983311387FE52932E37BDFB586F691C6B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5496-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000016cf8-13.dat CryptoLocker_rule2 behavioral2/memory/4768-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4768-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4768 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 2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_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 5496 wrote to memory of 4768 5496 2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-20_3bb05fdea7916eb7293b20a5f57eeb59_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5496 -
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:4768
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 e087f10427231d5cad044c274146ef8c5813f2a166eb4a274df6bc8cdb961428
- MD5 3a8ae84b001eac7a51c2873f73c9cb0b
- SHA1 e3f0bb8e1dd97e7e38478a96edd83bdce98fe416
- SHA512 6ca074ae83294e7c7e7655da090e3c82f2ebef398e756576914c68a4a8fca65111989bd27e8a6cbad1f095e92f0da2ad29863a989b51165dbfd57fd1778f415b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycS:bgGYcA/53GAGgIvFW17g
- TLSH T1633311387FE52932E37BDFB586F691C6B935B8223D16980D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH