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
09/07/2026, 07:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe
Resource
win11ltsc2024-20260706-en
18 signatures
150 seconds
General
- Target 2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe
- Size 1.0MB
- Sample260709-jht44aez5x
- SHA256 d0a7e34e1df66baf26645262a36b3266f70c718e7481cad07006c1a609f08e22
- MD5 fde2d21a40e6cb20db68b2a35cbcea33
- SHA1 bf16cc8a9f37534faea830a02d40141c1c469c50
- SHA512 bacc33dd6e19bf224b8a7a88677a57bb20c142b73590ae15bb5fd6db108149b09823adabaf8858d148bb7de2f05a26b2357d0fb03861ea589b242326e07e0f00
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqR:bGbvflT/ZFIjBzhxwOgXKarY1iBI
- TLSH T1952519BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1688-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000600000001e6bc-13.dat CryptoLocker_rule2 behavioral1/memory/4892-17-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4892-19-0x0000000008000000-0x0000000008022000-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-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation 2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4892 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 2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_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 1688 wrote to memory of 4892 1688 2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-09_fde2d21a40e6cb20db68b2a35cbcea33_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688 -
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:4892
-
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 09b480186ed12c4ec4fadcfd8a8b3c9bdb92b9d6c17fba6d6b523a03686b03b9
- MD5 b6cb95b34f8e4b5db6ac56ec937a2b32
- SHA1 8e1e4038e391a744703d998b28dab2503ec50df1
- SHA512 ade1e8029abcd73c82854fa19d625031054f749c47997bd5a3cdc655a900b7ebead19f63163d1f7b981086be3c29399f44b1afb47a7b5294d090cb5e27eee1b0
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqZ:bGbvflT/ZFIjBzhxwOgXKarY1iB4
- TLSH T1592519BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH