Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
09/08/2026, 04:11
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe
- Size 42KB
- Sample260809-esckkstwat
- SHA256 52ae22884cf7d629bb27c5e1f4620161a90cca295f7c6bab54ac48b133f51342
- MD5 33bb1a2834458db02f5177006be9e329
- SHA1 00e12b666a3f3640381e6a34d227f1cf3474a687
- SHA512 0dc8f7d90337312597f4add71cda58236354c36a044a1acf63fbdfd0e13ce482e94dfab2fd5a80ea38f7949f1b08db457d154b7d018fca2096e96331055be6d8
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCXS:bgGYcA/53GAGgIvFz
- TLSH T1A21373387BE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2608-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00100000000243b0-13.dat CryptoLocker_rule2 behavioral1/memory/1032-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1032-25-0x0000000008000000-0x000000000800A000-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-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation 2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 1032 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 2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2608 wrote to memory of 1032 2608 2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_33bb1a2834458db02f5177006be9e329_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608 -
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:1032
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 712c9ddef892dbe2be979ccddb05e72106f7e480a0cd7e2a76dc89e1265f43af
- MD5 2e61b2f2b32dc3e56029404607bc4f5f
- SHA1 7552d483dcfcfbe5ff181fadd014e57b9a377963
- SHA512 6d04d9c6c3d81cb705c61db296a8498a1c6c6380f97579a70677b30119a01e34244ca32c9c9a2dc725df8663c784c4358e11b460ae189434a9d8c8c5afde1f81
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCX4:bgGYcA/53GAGgIvF1
- TLSH T18A1373387FE62972E37BDFB586F691C67979B8223D16980D40CA53844833F61DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH