Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
21/08/2026, 12:07
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe
- Size 39KB
- Sample260821-pastysdr21
- SHA256 f57c8a2c238f1f3efd947ea392f3e6d87f23ced298c5254a3c3478482862a85e
- MD5 fb9ce01dbcbc00b440961baa9217a6b3
- SHA1 ec803105db154fa9595b687c1f1897cfb8b9bf5f
- SHA512 a667e66eb01f5a6314025b7e31faec10e576c28209552051c1e50ef3499cbb751978f8af66755eea2eb3245796b5568687cbd160a47e9ba532a75835aa49b2a2
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xfa4mi2CR0p8Eu6mYz7:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6pzmu
- TLSH T1B6032F3C6EE56872D2BBAAB595F752C2AC74B8123E154C0E94CB53850C22F17FD6260E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5732-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000011396-13.dat CryptoLocker_rule2 behavioral2/memory/4388-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4388-22-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4388 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 2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_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 5732 wrote to memory of 4388 5732 2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-21_fb9ce01dbcbc00b440961baa9217a6b3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5732 -
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:4388
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 39KB
- SHA256 a3ccc01aca15c74bb447dea153c35477b35d0a99509602d6483925816985a2f7
- MD5 0c2fed747f69580f5ffb9749f87e9b66
- SHA1 182db8182ee286ed5e68afc70e14c72300d68bad
- SHA512 b28b9288c3db208321687541b373a6e722e12cbb78821cd8aad3fbb156076d6a7acd120b9783d3489fa3a0870a51f185d6dc21f600c24faba00a053e50089f21
- SSDEEP 384:bIDl1ovmXAw9PMDREhi9OUSPlRxMc/cip7IAfjDb4H0g/Xfa4mi2CR0p8Eu6mYzr:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6pzm2
- TLSH T1E8033F3C6EE56872D3BBAAB595F751C2AC74B8123E154C0E94CB53850C22F17FD6260E
- MD5 SHA1 SHA512 SSDEEP TLSH