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
31/07/2026, 05:43
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe
- Size 52KB
- Sample260731-ge1flaverd
- SHA256 00eef046db831e31cd940d9f94a5040fc9068194cbbe0bfce093737288f3e1e4
- MD5 80a161c4e0e2c272bd35796d2bfce801
- SHA1 8727dd438fc857f0e74ac9d15d1e7933706cb8e4
- SHA512 08e441396e6b82e2c5ccd4d23bdda6aba9e73f8618f5ddc321a1eb63ac566e1139af8d9889e810e87c444d2b160fd2d1a1facd589d52838d2113f8e9fa0492d5
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycb:bgGYcA/53GAGgIvFW179
- TLSH T1453311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1248-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000600000000697a-13.dat CryptoLocker_rule2 behavioral2/memory/5988-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5988-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5988 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 2026-07-31_80a161c4e0e2c272bd35796d2bfce801_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 1248 wrote to memory of 5988 1248 2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-31_80a161c4e0e2c272bd35796d2bfce801_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1248 -
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:5988
-
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 ab2453a57434f6e38aaa8e3e352c779aadce2f204c5105ee08001f1a61f63ad8
- MD5 591893a47371cb96d58fa992ab3f4bf1
- SHA1 d807f30bad04e779626785d8ce4356d6106c1b4a
- SHA512 d5d0db3c27496803febedcdc9423ae2c0ea7d9712d24df7ebda5c5a304fd99a3b188e9a878f1a2efb36f77f41437f1d16ca3e9af88c7b59a4f010dd246612069
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1yc1:bgGYcA/53GAGgIvFW17j
- TLSH T1103311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH