Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250610-en -
resource tags
arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-x64system -
submitted
02/07/2025, 19:23
Static task
static1
Behavioral task
behavioral1
Sample
2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe
Resource
win10v2004-20250610-en
General
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Target
2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe
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Size
36KB
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MD5
09b356fc71fd2e5cc5d2304d0748e43a
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SHA1
cc0d89e2bf5c468b4af0b0acf5439ac33828ff54
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SHA256
99b4ad7bf582e9427818ea1cc2011705d7587d75ccecf57f898b6d292dbe2f48
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SHA512
187ed550c53e58d9d775a4e4aaa3da4e0310b2d3cf680a7b7bab1e111b4d633a80873bc8e78f9783ee2415b8a5c53aa6bfaae0663faafbc267843808b309405c
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SSDEEP
768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLenE:ZzFbxmLPWQMOtEvwDpjLeE
Malware Config
Signatures
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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-1-5-21-2012121138-1878458325-808874697-1000\Control Panel\International\Geo\Nation 2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe -
Executes dropped EXE 1 IoCs
pid Process 5520 misid.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language misid.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5720 wrote to memory of 5520 5720 2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe 85 PID 5720 wrote to memory of 5520 5720 2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe 85 PID 5720 wrote to memory of 5520 5720 2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2025-07-02_09b356fc71fd2e5cc5d2304d0748e43a_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5720 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5520
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
37KB
MD5cab8794525e4ba364abc95d422d36ed3
SHA1d8462b53ded4b3db56471e140b91d611a55fd220
SHA256bcaf43e1838920df710042cadd141e9c29144427909e175c1021419b931fe337
SHA5121d961b32b69ddadc992b33b2f163c72c9b0944d9ab0d18bc5c1113e59c263a7a4728e436f60d8943d13f3fce04fa53d54a17da0c22eefe8ca796a9d69deb5968