Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/08/2026, 01:08
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe
- Size 29KB
- Sample260820-bhjdlacp8z
- SHA256 396e4a298e33241a14ccd780e0343bfe92b653f8cb32f5eb1f1bfb094644853c
- MD5 875a68e9b16da6b8fe7d1237c28de4ce
- SHA1 969da5e2b497f6d16d7478336b3a65ac46550092
- SHA512 04cf0b1a6526a9fa8d48b60e44f8e49a0b406cc9c49ba7e52b3ceea1ffd6be96bec876440ebe4562204a78b1d109ce007dcfd4d59d6ba7b84c2a327d1afbe9fa
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xfa4eZv+r:bIDOw9UiaCHfjnE0SfaLYr
- TLSH T1CCD2E739BEE52C72E1777B7554F39282E875BD023A28494F98CF73890931E56BC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/4188-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b871-13.dat CryptoLocker_rule2 behavioral2/memory/4800-25-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4800 lossy.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 2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4188 wrote to memory of 4800 4188 2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_875a68e9b16da6b8fe7d1237c28de4ce_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4188 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4800
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 29KB
- SHA256 05acd0bfc9628fefc77b0a4c94a9d6172096d73b4e426017ea3674f6e12f309b
- MD5 5ee3f730abb2253d4ab85bb946a75837
- SHA1 81757d62714c394ed183b0813a729f781c528425
- SHA512 def2cac48023d3d494f8013d9c1634aa70e534ea1f1d82e5d6d895a5c93869566eea3efc83a5d6bbe75f20507048331d1102c24d5cd323dea9852bbba115c11a
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xfa4eZv+8m:bIDOw9UiaCHfjnE0SfaLY8m
- TLSH T19ED2E739BEE52C72E1777B7554F39282E878BD423A24494F98CF73890932E66BC5210D
- MD5 SHA1 SHA512 SSDEEP TLSH