Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
30/10/2026, 03:51
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
7 signatures
150 seconds
General
- Target 2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe
- Size 32KB
- Sample261030-eexzcsg12x
- SHA256 7dcce4af3d9c208450ae2e6f6744bbac226c668577776e458b7168ce32d6d036
- MD5 5ad82060005e0963f4c35d3564c25028
- SHA1 39157313fbea8c14b894f54b6f385725717e743a
- SHA512 5a777d55b603e156d554ec7b3fc16affef20e6fa89884a832092056363a47d82f1d48fd7469d9dfbf0fe85525b57a8723bc5090dcb5d5cf9c4a3be323e2d432d
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAeaMGSZ:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XX
- TLSH T181E28532AFC515D5D673A9B3F8F792C2E527BD696932850D508A3F004AF3641BCA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000023885-11.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000c000000023885-11.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2091445952-3649787497-104050984-1000\Control Panel\International\Geo\Nation 2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4988 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 2026-10-28_5ad82060005e0963f4c35d3564c25028_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 5456 wrote to memory of 4988 5456 2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-28_5ad82060005e0963f4c35d3564c25028_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5456 -
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:4988
-
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 242d1011f23a3ebc473b15945b4bc459cf686cfd9c9b6c271fadfe74612d828a
- MD5 a30c25b243de4db982136c0398029ae1
- SHA1 371e2075d15efc97a6a323932b604d6c786c2314
- SHA512 40267a85d664bbbb7878261b025e5c26d96fa3da761cd6bb3c9f066b9882f40062bdfa4409d6d46abb245a8ac57868c299c5756e07c324306309938045608d16
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAeaMGSD:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X9
- TLSH T1E6E28532AFC515D5D673A9B3F8F792C2E527BD696932850D508A3F004AF3681BCA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH