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
13/08/2026, 09:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe
- Size 1.0MB
- Sample260813-lnaczseq3v
- SHA256 0677ab0230d0ebcf4f959267beb9cf550619e1eef6b115982ed236de3046a697
- MD5 52408ef6e24e86dafd84d858088752d3
- SHA1 babc8874a272105b07b96a549fc848f099e23877
- SHA512 77fc8da4364ad344172c7df7ac82817f0ae246d8a826384103af3434e65445732bff88bdcdf076156e7e4de9a054fd1bdb44f57a74b4fe4f71843640ad8c79b5
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqk:bGbvflT/ZFIjBzhxwOgXKarY1iBF
- TLSH T1112509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3936-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a00000001136f-13.dat CryptoLocker_rule2 behavioral2/memory/4264-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4264-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4264 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 2026-08-13_52408ef6e24e86dafd84d858088752d3_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 3936 wrote to memory of 4264 3936 2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-13_52408ef6e24e86dafd84d858088752d3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3936 -
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:4264
-
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 0ff4feae9db29d91cf46b9c238cd8ae4c756e806e368cd5a53bed3a111c37f42
- MD5 cb57f4a5c6c5023198bd8f5d829a64e5
- SHA1 64b9c69776dacb0f7c4ca2ae5308efa7896054e3
- SHA512 c30470851175068ecc1b65ddb73597e816df4bb736f407c6319b3c827e74c8cfe43619d300f18d72aab30828f4e70953c7e21590e49c02c114990e74e4c5a321
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPq3:bGbvflT/ZFIjBzhxwOgXKarY1iB6
- TLSH T1A02509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH