Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/07/2026, 02:31
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe
- Size 41KB
- Sample260720-czxg8aft21
- SHA256 325d197576159d7382df97e9632651fab34ea499fcaafdf6e6c3c4f00d72acd1
- MD5 d7577d0659dc9148f7b44e1d8fadba7e
- SHA1 1016bf428b2a454b51a3a715527df28c36cc4d86
- SHA512 cd471337e13e1a38bb6ea0c28f3e7ba1612c0e4b4dddbc28fd627c103bc23f8d4f9bb36f7972eef1a3b5483059b3f80b707e9d5563c2041bfb7df20fd29d78a6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCw:bgGYcA/53GAGgIvF9
- TLSH T1731374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4696-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001b315-12.dat CryptoLocker_rule2 behavioral2/memory/4732-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4732-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4732 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 2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_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 4696 wrote to memory of 4732 4696 2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-20_d7577d0659dc9148f7b44e1d8fadba7e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4696 -
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:4732
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 311c3202f6a9c41010c34fa92bb55e64ab6e9872509c653002455754e3a763d4
- MD5 495374e29176005f6741553daf4835a8
- SHA1 9b1dbcbbbc37e42dbfdacbb767803b3de860c8e7
- SHA512 6f0153a7506b7935ada19c2c265c0fc925d7f8eafe7234a18891a0b5dd039c5a64acefd68ce3993e55fd782c288eb7339d5e2f3e2c4843677fcdde99b3e05cdf
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCl:bgGYcA/53GAGgIvFQ
- TLSH T1171374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F66DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH