Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
23/10/2026, 11:17
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
7 signatures
150 seconds
General
- Target 2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe
- Size 120KB
- Sample261023-nds4fsbs8w
- SHA256 a83cb3d923769355cb89025a206b0921b318aaaabcebd69ad2507e8cb017b148
- MD5 677620f10d77ea7c97b35e84cf90d66a
- SHA1 fa6411a1c8523256ba00fe6ab070691671245f77
- SHA512 1ec35572d6da7e3e23c4f75db71a3b027d20f84413d8db2601c49e1f7105c9201dfa70b671738b2fbfcde164bc7b1cabdbcd877575c0df4941a17d336f1b1e87
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYOF:vCjsIOtEvwDpj5H9YvQd2t
- TLSH T183C3FD397AD51572E3BBCAB585F641C2B935BC227C21990E64CA334C0C33F56EDA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000a00000002434a-11.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000a00000002434a-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-1-5-21-2101206053-1414382737-268919432-1000\Control Panel\International\Geo\Nation 2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1200 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 2026-10-23_677620f10d77ea7c97b35e84cf90d66a_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 2796 wrote to memory of 1200 2796 2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796 -
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:1200
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 120KB
- SHA256 a359922a8bab5e38f981ba368d1f4f8ab26d35d8f0fce74b92e37a2ab8cc4e50
- MD5 fab323a85c7d49d1b596ba80c92c60a2
- SHA1 dbe3f16090bc2592eedd1b62513deac56438b7c4
- SHA512 a5db75cb6efea811d7800689a884865a0f3e25102d5c1a830b19a86841b864831f77939e246d650c89a3562a610e787bfb8d4531b028aea71a48a4d10f4d4df4
- SSDEEP 1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuBKLUYO0:vCjsIOtEvwDpj5H9YvQd2s
- TLSH T137C3FD397AD51572E3BBCAB585F641C2B935BC227C21990E64CA334C0C33F56EDA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH