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
07/09/2026, 04:42
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe
- Size 1.0MB
- Sample260907-fb5epsxsbt
- SHA256 499fef9211c4e43051e2c65b0e9c8caa5933572b9a7f947ee458f14094b0b952
- MD5 3ee3d5f536c17dcff2410ac501361ece
- SHA1 d7648fb18e87f681a3f8e12082c8f40fb7402908
- SHA512 4d79545f93a50f3aa0061f67ac5c2795cccd8796c885ff2c42afa87900b6062d0e5497e8f7bfe237f84b02436d915228a2b6ea9ff5b556f79055c7f5bc3d0660
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqZ:bGbvflT/ZFIjBzhxwOgXKarY1iBg
- TLSH T10B2509BE74972645FE625C307FECF660DB57287ACB6BD6F241A5A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/5816-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0032000000023aa5-13.dat CryptoLocker_rule2 behavioral1/memory/5464-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/5464-25-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - 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-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation 2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 5464 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 5816 wrote to memory of 5464 5816 2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-06_3ee3d5f536c17dcff2410ac501361ece_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5816 -
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:5464
-
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 0d8e9dc9784a56f1847ed4f72891e92611c911284c7a3cdead12ea9438a9642f
- MD5 7eb9e10276cbfc6848ac70e0258ddd5e
- SHA1 2bdf0522f1bb2305dd024c6425fc129bf0f3f5d0
- SHA512 4a35911dcae5370c2d9c747dad88d9fc85c62d2da7550d322bf85874d3b2a487b8b0a29c1af6d8063a6dfdadb4a2784e0fce91fe99c57bd5d3ec0b7217f5f423
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPq9:bGbvflT/ZFIjBzhxwOgXKarY1iBc
- TLSH T1932509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH