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, 02:31
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe
- Size 1.0MB
- Sample260820-cz7cesdp2v
- SHA256 682e7948e8da89f76d9a39fd020da999635eb1adef4b2793dc4cf46a9612963f
- MD5 04284be16c32a0bc7e0f5501c3bb9bbf
- SHA1 b54d1d95095e27db4d86c62e0998a7bb917db810
- SHA512 5272a89a7c6f3a5f4e4cf5a51a62d84c2e4911b47b067f3099b78e9247601df78ebd826d6c6f573690a6477859ec59ac541e87dcc302e1a8a94f7e52fbcba7f4
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqb:bGbvflT/ZFIjBzhxwOgXKarY1iBO
- TLSH T1E42509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5824-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000016b61-13.dat CryptoLocker_rule2 behavioral2/memory/4320-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4320-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4320 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 2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_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 5824 wrote to memory of 4320 5824 2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_04284be16c32a0bc7e0f5501c3bb9bbf_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5824 -
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:4320
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 1.0MB
- SHA256 a303bddb0d56ff3666051718b70380801c8cf25e87e10ef13ac699663a378ed5
- MD5 5f069a77ec5216825ff672f3a6e9842a
- SHA1 ac331b2f38c53bde12656a93a1886e5d4bcd7bcb
- SHA512 eaa0b5c73ba8137d58b1cb70c7c33a1276904ee9b33a18817a8ff44ca1255f2e916fce3ea76701fcbfca87c0317b30c2be6433894427ff7cd4cd9aa8af717df4
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqb:bGbvflT/ZFIjBzhxwOgXKarY1iBG
- TLSH T1672509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH