Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
08/09/2026, 00:52
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe
- Size 46KB
- Sample260908-a8c4tscc49
- SHA256 8a6c90e7abb63862f6cb43b155ce6e4bba2418c186437b99fa293c53ec76780d
- MD5 f7d9d8af89562b09baaa5223871dc9c8
- SHA1 a76ddec6b1b604951c817c07c7c6d13f866ce71c
- SHA512 077cb0ea6ca3443ec7a2253b8f8a14ab4cd97f468d226f185f6546f59f9e384db4e3bbd88ca95de0955f91a4ba5cf9fcb20b1c36429452fb3ea8e871143baeb9
- SSDEEP 384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3hJ:bm74zYcgT/EkM0ryfjd3P
- TLSH T191234F24F6D62BF1E23AAF70C5BE9071B66BB81329154C4D748BEFC684327539A43507
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4516-0-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4516-3-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000011374-14.dat CryptoLocker_rule2 behavioral2/memory/5456-19-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5456-27-0x0000000008000000-0x000000000800D000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5456 hasfj.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 2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4516 wrote to memory of 5456 4516 2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-07_f7d9d8af89562b09baaa5223871dc9c8_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4516 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5456
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 dc02cb720069ed6d25fe40e43e32d4160f7a9448d00148901b86db5a6b9e6291
- MD5 68cd6a5da5c2cb366f23fb83b43be8f6
- SHA1 054a2c106869c57f981a36d8832e2a7dcb17bc8e
- SHA512 4547d55f50e9f652100c02817345806b5e1e502c412e3d0772178b23ed592035b116b18458839695de99d0a2add875405ceaf64cb48db6ac76b663dbe2a149c6
- SSDEEP 384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3hd:bm74zYcgT/EkM0ryfjd3b
- TLSH T13E234F24F6D62BF1E23AAF70C5BE9071B67BB82329154C4D748BEBC684327539A43507
- MD5 SHA1 SHA512 SSDEEP TLSH