Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
19/05/2026, 00:46
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe
Resource
win11-20260513-en
6 signatures
150 seconds
General
- Target 2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe
- Size 53KB
- Sample260519-a44e8aax5q
- SHA256 3d943095f2ee5236779dd53bce15b759611924cba4459403664d8f884d1b0de8
- MD5 b7facddef466e6cd4eaa06716db4d2e6
- SHA1 36de48b0b33c714a73dc9d6d1dae535f9c5a573f
- SHA512 5a1b7743105724a35d78556dbd7e27d40cb51e3322731150dd468a4528428d8f34ede5c949c18df6fdfe374f3d175a1f5a0cb4480681ed1c5a9ff38488d5c885
- SSDEEP 1536:Z6QFElP6n+gMQMOtEvwDpjyaYaFAeG/Y8H:Z6a+pOtEvwDpjv90
- TLSH T143331F386FD51A72E377CAB585F682C3B936B8233822990D50CE17414C33B56EDA1E1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000024319-12.dat CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000c000000024319-12.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation 2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe Key value queried \REGISTRY\USER\S-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation asih.exe - Executes dropped EXE 1 IoCs
pid Process 2424 asih.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5064 wrote to memory of 2424 5064 2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-19_b7facddef466e6cd4eaa06716db4d2e6_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5064 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2424
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 53KB
- SHA256 f843bfb9a77e8602205994c470ca815f40b5344feb42e943ccc2bf0c61a21e3f
- MD5 f874258fe28eabb529a1d1f11b43376e
- SHA1 11a58f389d72ea3e7f78358033ba13003120437c
- SHA512 26bab082e35609accb5810c0b01d8ec43047d58855726a8d71165b7a446c73364f9cbbb4f4cbfbb56f811c006a310c6736066c37f56a9ddd08763f717d1131e6
- SSDEEP 1536:Z6QFElP6n+gMQMOtEvwDpjyaYaFAeG/Y8e:Z6a+pOtEvwDpjv95
- TLSH T1E4331F386FD51A72E377CAB585F686C3B936B8233822990D50CE17414C33B56EDA1E1E
- MD5 SHA1 SHA512 SSDEEP TLSH