Analysis
- max time kernel
149s - max time network
143s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
01/06/2026, 12:15
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe
Resource
win11-20260513-en
6 signatures
150 seconds
General
- Target 2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe
- Size 51KB
- Sample260601-pfcd6ac18k
- SHA256 b298512d4b145b14b477655683dc8efdda9a9270d01bb4681ba5db2d433c49e6
- MD5 b3756c459a5af8e1a58f0db5f88376c3
- SHA1 22ca7680e0627499815829397580a8b7bf57124a
- SHA512 3e84bce6bfb1463ccfdec31ebbf1999bdbd526b7c2d4323b3267b09fe4532cdd337af42d59af4bdad5ecd29c3048630b5bb6e1d51ecd06d830c1a84100c2c1c4
- SSDEEP 768:l6LsoVEeegiZPvEhHSP+gDYQtOOtEvwDpjtMLZdzuqpXsiE8Wq/DpkITYabDNgh:l6Q0ElP6G+gMQMOtEvwDpjgWMl7TdVgh
- TLSH T14D3300741AD43D72D7779AF6C9FA41F3A536B812B811981D50EAD308C823B52E8E1E1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2704-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001d00000002b373-13.dat CryptoLocker_rule2 behavioral2/memory/2704-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2560-28-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2704-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x001d00000002b373-13.dat CryptoLocker_set1 behavioral2/memory/2704-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/2560-28-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 2560 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 2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_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 2704 wrote to memory of 2560 2704 2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-01_b3756c459a5af8e1a58f0db5f88376c3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2704 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2560
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\asih.exe
- Size 51KB
- SHA256 926642223fe56834bf4f4801c43df3a3a786b3dda5dc2cc30aecd752f84b782c
- MD5 355558128c516246efa5dd9792e8e45e
- SHA1 2979dd9bace878ab29e2b88a00237d947b5e7c50
- SHA512 e966f5235ec00e804edd89d0c3290c87d4ee83d406d2564b3f8fb80fbc1eae326bcbbdb4080cb98fcc7dac014acfd6243488136e54a943a16cdbdc9a18f7959c
- SSDEEP 768:l6LsoVEeegiZPvEhHSP+gDYQtOOtEvwDpjtMLZdzuqpXsiE8Wq/DpkITYabDNgw:l6Q0ElP6G+gMQMOtEvwDpjgWMl7TdVgw
- TLSH T1563300741AD43D72D777AAF6C9FA41F3A536B812B811981D50EAD308C823B52EDE0E1D
- MD5 SHA1 SHA512 SSDEEP TLSH