Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
24/10/2026, 14:07
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
7 signatures
150 seconds
General
- Target 2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe
- Size 33KB
- Sample261024-re1fpsvvas
- SHA256 99266935228548c6e0e15e884de4df916f50fb7b995ab5b31ba83104df7a7e60
- MD5 4a7b684594efe33a0d3587dad6309f1a
- SHA1 97659c142dafc8ad3e51d8b85a0190d40451d59e
- SHA512 f180d40e71bc7b92afe8462322dd475851e7c09adb5dd7dceedb37bcddbf89f6cb9830e1d2bb2ccf609b8168721a45c6613f07ee2d1863d72c6f063e99413249
- SSDEEP 768:Hf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGeNEmK/4BAl:/1KhxqwtdgI2MyzNORQtOflIwoHNV2Xx
- TLSH T1D1F27572AFD515D1E773AAB3F8F792C1D627BD296922850D108A3F4446F3680ECA1D0B
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0024000000018899-11.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0024000000018899-11.dat CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 1528 hurok.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 hurok.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hurok.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 2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5824 wrote to memory of 1528 5824 2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-22_4a7b684594efe33a0d3587dad6309f1a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5824 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:1528
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 33KB
- SHA256 7ba392fda3c63885e1dab99514896d9e72922fade082bc856d5c66ed0384c9ad
- MD5 f84677b949fe3471416b8061e9717ab1
- SHA1 c134446d855c0c8d5cdffa9976351d9c64b21d6a
- SHA512 f062b71301b7aca26d0b6758c09af8722ecbe752fd074e75c3eede4245dc7ffd14a8a05b58a51861f42a7d1484e2696c07e235a3ecad44f1f8bad1dd5589acec
- SSDEEP 768:Hf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGeNEmK/4BAkcV:/1KhxqwtdgI2MyzNORQtOflIwoHNV2XL
- TLSH T1A4F28672AFD515D1E773AAB3F8F792C1D627BD256922850D108A3F444AF3680ECA1D0B
- MD5 SHA1 SHA512 SSDEEP TLSH