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
02/08/2026, 04:16
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe
- Size 44KB
- Sample260802-evywlach57
- SHA256 0f76d658a59e69f899e642a17b02ea6b42f24f2ee6e4401b35366fbb26ebaf64
- MD5 3fe16dda4fd11d7178ca58848720713f
- SHA1 972f27e0524ad6e601c13e466beaed9f3c4542e7
- SHA512 78ddf6163600e86055662b6ea40600a6debc108d3a279e3afe0cbfdc9be1e92368f05c7ff7984e571fe2042e314b448cad3fb600aa155049a09f00738066fd4c
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXTFnk:bgGYcA/53GAGgIvFJFk
- TLSH T1262354387FE62972D37BDFB586F691C6B935B8223D16980D40CA53444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/928-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000011371-13.dat CryptoLocker_rule2 behavioral2/memory/1780-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1780-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1780 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 2026-08-01_3fe16dda4fd11d7178ca58848720713f_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 928 wrote to memory of 1780 928 2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-01_3fe16dda4fd11d7178ca58848720713f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:928 -
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:1780
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 6341d23d554b1493a97b9208d5d31ec7d6acfff3b514701d0e7b469037250748
- MD5 bbc5cf7d897e5c3e5434cde0c549625c
- SHA1 abfffb85558fa5bbb4232acc0b31035a77bdc7ec
- SHA512 64e64cf7fa47e027b4899346bf1f7783876cab324332eae6a4bba4360ed4bfe808a78c6b7ab9a956f2a610b90a46b24a8977140850e69073463c96d2bcbb610d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXTFnX:bgGYcA/53GAGgIvFJFX
- TLSH T1C92354387FE62972D37BDFB586F691C6B935B8223D16980D40CA53444833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH