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
04/11/2026, 15:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe
- Size 41KB
- Sample261104-tex2pabt3w
- SHA256 924cbbd1e4938f32d77c8c7efc7b8d2c8516b3f4f5b738897a61b82ea03a0061
- MD5 7db9f76102291c6f72f5bffee69b8bd1
- SHA1 b1a2bf47a0bb4779d4c481d815e3e61c53655d38
- SHA512 e0915c260f39eb33a57d9a9b7a628c616e1244cbe33818d2cb4c2b9ea950692bd059d0b94e9eeaf0a486cc3f77d62013b7c54e296daab272ef80e8c2a92e0470
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC5s:bgGYcA/53GAGgIvFn
- TLSH T1FE1385387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F62DC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1272-9-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000001b302-12.dat CryptoLocker_rule2 behavioral2/memory/4032-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4032-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4032 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 2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_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 1272 wrote to memory of 4032 1272 2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-11-03_7db9f76102291c6f72f5bffee69b8bd1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1272 -
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:4032
-
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 c13d44abfc245123c39296a74750dd73285b02fe45e76460f02d532243bd33a7
- MD5 91813536eea0fd9d5fcaf7e2f472d456
- SHA1 d78c4456304c31ecd94fd38a40e0aecb34c38054
- SHA512 f98c396d2c4b845e7ac162c6070ae1d4b616c4c111aaf7aa0d861b423848d619fcca31c594a827a1239089801f147708c8294057565b1b299ca5b81b869db812
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC5c:bgGYcA/53GAGgIvFv
- TLSH T1821385387FE62972E37BDFB586F691C67975B8223D16880D44CA53844833F62DC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH