Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
19/08/2026, 22:56
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe
- Size 41KB
- Sample260819-2wpqmsaa99
- SHA256 47c1e7c85630973ba90b7a3f0164d85f1a0fe6cb48ec7ed0facb8cb4ce7a5a0b
- MD5 4c41237d3ee7ce5c3459be72d9147fb2
- SHA1 cc37ce9b7a1f6783c27913625e2e94b2acab0b95
- SHA512 db22cb91fcf013ce8b91f83bc8f073bd0dd2b4615e3d1fa1074e006c4e0199ee6e2636b79c17fb7a46dcf119ff6f7989ef62547c0b5c07a5d7a7c95b863ae19e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCPn:bgGYcA/53GAGgIvFun
- TLSH T1651376387FE62972D37BDFB586F691C67935B8223D16880D44CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3472-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/4368-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4368-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4368 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 2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_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 3472 wrote to memory of 4368 3472 2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_4c41237d3ee7ce5c3459be72d9147fb2_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3472 -
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:4368
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 540652fe5d0b8b52846fec80fc8829fe02a49ec912b366e27e63f97cee764861
- MD5 1f060d8dabc3f6a825f666d2c8e0d1b2
- SHA1 92b539e90e51d373a91154ec6d9c66d5333d0395
- SHA512 07e1b08a37e651b25d2a1e483fbaba000294d38eca08ddf4d69990051be96281df2371e3eb14cf7654caef72b9ce82ef3ce60cb88d35655e451be1331491db50
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCPT:bgGYcA/53GAGgIvFuT
- TLSH T1371376387FE62972D37BDFB586F691C67935B8223D16880D44CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH