Analysis
- max time kernel
150s - max time network
149s - 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, 06:01
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe
- Size 52KB
- Sample260804-grd35asdqh
- SHA256 9153f68c06107b2307e5454b1b3d9e4c3263f76c6e82f0db834f45fe044e3bb4
- MD5 a404a75f7f83e0ef54cd952e533e1622
- SHA1 2be72c3c142f33e590ab458fccaf3cdefc97fd74
- SHA512 a4b42ddb074a75c305565b95b75b2a8c18919a88e5808072d4dc59ca1a05ccb344cdb6c9b6a5f601e251d2b9883c794e1d91215af65e70eb3225438dc10289aa
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycl:bgGYcA/53GAGgIvFW17D
- TLSH T1963311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4952-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b840-13.dat CryptoLocker_rule2 behavioral2/memory/5844-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5844-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5844 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 2026-08-04_a404a75f7f83e0ef54cd952e533e1622_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 4952 wrote to memory of 5844 4952 2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_a404a75f7f83e0ef54cd952e533e1622_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4952 -
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:5844
-
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 c509ecbdc41dcac7b76e2f0a2a254d44ddfd20453953c2dc138b796799eb37ea
- MD5 7837885177a9ac40df81420303b0c905
- SHA1 61312e8a18652a835cd2c4b9b17092c5164a98a4
- SHA512 4926b891da3420296abe6adb94dffb79b7498a4c64d5a5c99f745ff3caac715258daf280886b56dba9500cd55cf9f461e7fbfdc530c6ebe8dc6160a962cef206
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1yc7:bgGYcA/53GAGgIvFW17N
- TLSH T1BD3311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH