Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/11/2026, 03:52
Static task
static1
4 signatures
Behavioral task
behavioral1
Sample
2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
8 signatures
150 seconds
General
- Target 2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe
- Size 56KB
- Sample261102-eflbyssv3q
- SHA256 8884c67ae2be9218e3470809c9b26c18bf54803dd614ec4b683a194d4bbde536
- MD5 eecf3930a834acb704d25f3b384db454
- SHA1 f464613246c225291934981a3e2978cd202133d9
- SHA512 6f3da72e16b8d9915f52f7a9981df55e4fa934efdbf01b94a6b9e84cb328811d94ceb9e17b2b3c66a86348cccc5dab34d2fba9b80a394bbc4c07c8e2cc4e7e1c
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7Mz5l:xj+VGMOtEvwDpjubwQE8l
- TLSH T134432F396FD91672E3B7CA75D5F781C2BA35B8223D21980E44CA23454C33F16EDA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5560-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5560-3-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000500000000053e-13.dat CryptoLocker_rule2 behavioral2/memory/5444-23-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/5560-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/5560-3-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000500000000053e-13.dat CryptoLocker_set1 behavioral2/memory/5444-23-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 - Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/5560-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/5560-3-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x000500000000053e-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/5444-23-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 5444 misid.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 misid.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain misid.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 2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language misid.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5560 wrote to memory of 5444 5560 2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-11-01_eecf3930a834acb704d25f3b384db454_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5560 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:5444
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:2528
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 56KB
- SHA256 410a9b6a696111ddf7ab81826c2fbd41500f74b60d2b14a09a011a3fa94899a1
- MD5 09e374ca3d392cbc75a03f0a1af20cf2
- SHA1 9f0475e47461113a0b0cbd9fe1b97d74651c9988
- SHA512 590dd7003ea3e37eadc4fc267b22d2e98a9c44e7977efe89d230304997822ba923a44c2f939d349294d8c2484683e15a4df54e6155acf249ff2e86f8a6194351
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7Mz51:xj+VGMOtEvwDpjubwQE81
- TLSH T140432F396FD91672E3B7CA75D5F781C2BA35B8223D21980E44CA23454C33F16EDA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH