Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/08/2026, 14:06
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe
- Size 4.6MB
- Sample260808-revv8astdz
- SHA256 9e935a976382f1ec0e7999de8995a34f7887997c9f1af05fe1537ad335ae9e7b
- MD5 e44e4bfe87d66db5f12856e3456d18cc
- SHA1 0a7becb4fde902df16568f29ab9ec42e4b8b3b22
- SHA512 f358dee6ec1ac1348c137f6f893ee294f8e1cd8b83aae6279e1db990aa24f3142012ec620e4fecc36e836b35003e5c15dfc22747f300edc1d2e171b6407537e3
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT1:w/ZFIjBzF/ZFIjBzPEUus1
- TLSH T104363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1676-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000244ad-13.dat CryptoLocker_rule2 behavioral1/memory/1116-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1116-19-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral1/files/0x00080000000244ad-13.dat INDICATOR_EXE_Packed_MPress - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation 2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1116 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 2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_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 1676 wrote to memory of 1116 1676 2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_e44e4bfe87d66db5f12856e3456d18cc_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1676 -
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:1116
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 f5174288891ab936030ab2509b9d287ce1de56ce761ad2fce830b73dfacb862a
- MD5 acc5b937304b8ce584254d485263322d
- SHA1 cb6a9c3f6bf33f64a87cb5be51d24a04075fe2e1
- SHA512 fbd696c8a59916b334c91b94c52b3ec7304f1e975d190167370a11ecf6cd439fa0d21503320576f79016159b59599cbfe81cf733dfbc7b6907ebfe4290d0cc18
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTQ:w/ZFIjBzF/ZFIjBzPEUusQ
- TLSH T194363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH