Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
14/10/2026, 23:27
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe
- Size 39KB
- Sample261014-3fxlzstyb1
- SHA256 a19f951c7fe9d775e69fe7bc454198fc964f037b43d81f3add8fb03e0df60601
- MD5 399d3b87b2c142854b022a8abe9b9314
- SHA1 8c83412bf85424b7db79deb213db6e9bcb6adeb1
- SHA512 fadd8f14d628681524734cf61b1c898cf63b288bb2d021b8c3bf2e2f40ec19e1eb7767a5cbdd7e73333f36a2dd453e8dafd6bc209870b8e34c91e8a47fd9ff50
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpce:bgGYcA/53GAGgIvFo
- TLSH T1F40384387FD62972D37BDFB586F691C6B935B8223D16880D54CA53844C33B62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5088-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000c000000019ca4-12.dat CryptoLocker_rule2 behavioral2/memory/4836-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4836-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4836 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname hasfj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hasfj.exe - 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 2026-10-14_399d3b87b2c142854b022a8abe9b9314_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 5088 wrote to memory of 4836 5088 2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-14_399d3b87b2c142854b022a8abe9b9314_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5088 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:4836
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 39KB
- SHA256 d2f169584d0b81351ae5b7122abe1e45676d91df2a02ab9ec8565f804a78274e
- MD5 5ce72e544068dddb43b7f29e2a5cf5b1
- SHA1 b8650b25da2a3fd69f41b2c8e12ff709f46da1a9
- SHA512 229377a8aa2dec99bbf46d8995e250bbd6a45844879f6f8cbee5d450946e099dc54031be712b66d4a83104c0627471c5286a089c10e14bbaa1481555ba5c72a3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpch:bgGYcA/53GAGgIvF7
- TLSH T18D0383387FD62932D37BDFB586F691C6B975B8223D16880D54CA53844C33B62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH