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
04/08/2026, 10:32
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe
- Size 47KB
- Sample260804-mk3qsscq2w
- SHA256 1c6d91d2d7918d1b40fce25ac26a53164ac8c05454e219582937e7c1a67ee7b9
- MD5 9f1d3dc603f56651ac3688f93e7d8519
- SHA1 9536cff8f32129753aef6a575d9e2661000d32ec
- SHA512 c8a892834b83d3c60cdda4700864cc9917a1c63136d8601649a1288fbe2f250347c852d2ff9aa450f97922110b6f0ac65e1205384bfef92d0535533638ad65ac
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCF:bgGYcA/53GAGgIvF9v2ZZCF
- TLSH T1D62355387FE66972E37BCFB586F651C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4312-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b884-13.dat CryptoLocker_rule2 behavioral2/memory/1788-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1788-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1788 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4312 wrote to memory of 1788 4312 2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-03_9f1d3dc603f56651ac3688f93e7d8519_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4312 -
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:1788
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 2d4f420f62bb45175082f8707becae8096a0edfac7ecdd904efc50453739fbe0
- MD5 f7100e857383eef65c821f4c80198d67
- SHA1 defe2202325f69ee7773b91150aeeb56875c55d9
- SHA512 f13a38b83c65d5416c107ee7b60862abca062bc4424253857cc61f5fc9d3abc36f838abc0ac99e3dcebad0398332e9202083a32a554c5a69f0624f489883017c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKYCw:bgGYcA/53GAGgIvF9v2ZZCw
- TLSH T1CF2354387FE66932E37BCFB586F651C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH