Analysis
- max time kernel
150s - max time network
156s - 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, 08:50
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe
- Size 36KB
- Sample260808-krpreacl9t
- SHA256 11653c696486836174e61a4959c2d4f00087ef2df0d8e654414537df101619b4
- MD5 8adc02f6aaefbc519fd350b9e0e3f3f7
- SHA1 ef366097615a2865ee7cbd4bdee0f7304193c402
- SHA512 7852e67b2f728e6fe97a8405084ba196a8374560858287139aa7a015e23b13283c5159391e2581b2e82c78f3ac47fd0dc251ee9a593ca75e2650c1e7a66f3f82
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjo:bG74zYcgT/Ekd0ryfjWlNGvo
- TLSH T13DF2D535FBEA3822DA3BAEF491F640F2BB3F7819791078CE049BE34D4872611995D509
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1588-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1588-3-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x001300000002428f-14.dat CryptoLocker_rule2 behavioral1/memory/4092-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4092-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4092-21-0x0000000008000000-0x000000000800A000-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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation 2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4092 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_8adc02f6aaefbc519fd350b9e0e3f3f7_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 1588 wrote to memory of 4092 1588 2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_8adc02f6aaefbc519fd350b9e0e3f3f7_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1588 -
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:4092
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 36KB
- SHA256 8c1ea1e1793d32c71df514a066f7f2d8d3b034837f326f843409f64e4a4cd6b0
- MD5 7c827fb62a6a0b340a7e2873e72b40f3
- SHA1 20bb15fda3fa443b1f13f1216d0ebc760fe7b7dc
- SHA512 eb54d6d16669be44fbe6dbd7844c0a838cfb6343be5c6af5634b9627011bad5d219d050086198063ee180d17d41131f2d349ce2c8c875e057a5ef60d79fd41a3
- SSDEEP 384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuaBflNGesjZ:bG74zYcgT/Ekd0ryfjWlNGvZ
- TLSH T19003D535FBEA3822DA3BAEF491F640F2BB3F7819791078CE049BE34D4872611995D509
- MD5 SHA1 SHA512 SSDEEP TLSH