Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 23:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe
- Size 52KB
- Sample260809-31ayqaxfng
- SHA256 4c22fba24831f587747d873dbda422ee780507912871ca849f1ce086deb19097
- MD5 4dc3d128253e0a10bbdc6409a98e4f7c
- SHA1 d72b2546b570466dd3b0449ccb28d0979c38fcb8
- SHA512 8f18e080443c57e298791a8750a367ece689cb02ccef9e709cc811309e714c0687b38d759b85fc179fd9bef74ba9f3a6e43cbe5a66bbe29ba1f0c89814a81842
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1yc3:bgGYcA/53GAGgIvFW17R
- TLSH T1E83311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1760-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000019cc0-13.dat CryptoLocker_rule2 behavioral2/memory/3432-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3432-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3432 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 2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_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 1760 wrote to memory of 3432 1760 2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_4dc3d128253e0a10bbdc6409a98e4f7c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1760 -
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:3432
-
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 54ee253d6acec9c51a1f77d163c14f5d6b0ae823e4a66b33478bdd8ae89bb665
- MD5 4759234ebc3486e6a9b1266dd301f95a
- SHA1 a204618328ae0ed7e39a6a37227db0d4f7e8d725
- SHA512 1614c44d9623bbaf9db84fbd664066fd66305e2011c8fa69496da08e4a7d5c355b8ed8050d514d0f557fe021eece07cefb1e5ee88d151fe9538bf4d5ca8bcc82
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycX:bgGYcA/53GAGgIvFW17B
- TLSH T1DE3301387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH