Analysis
- max time kernel
150s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
30/09/2026, 16:44
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe
Resource
win10v2004-20260911-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe
Resource
win11ltsc2024-20260911-en
6 signatures
150 seconds
General
- Target 2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe
- Size 49KB
- Sample260930-t867fssbke
- SHA256 23b2327d0b4fa54fdd9994747b5c3da37f596a154186fa735cb5fa962692a51a
- MD5 c542316b116457aed5c3d8aa91c02597
- SHA1 88370e859cfa94aa5443bafefde9c3a7ab9a10a9
- SHA512 199fac37071ed7b3fea9b4532b72c907389e49f74b05a6e6eb0710860268fc2c10bc820e28a32b4df7692ab58b944d61b6f3a1716f88298f40fdf694a668fd9f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwV:bgGYcA/53GAGgIvFbe
- TLSH T11A3333387FE62972D37BDFB586F651C6B97578223D16980D40CA43844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3808-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00070000000004e8-13.dat CryptoLocker_rule2 behavioral1/memory/4052-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4052-19-0x0000000008000000-0x000000000800A000-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-1-5-21-2101206053-1414382737-268919432-1000\Control Panel\International\Geo\Nation 2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4052 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain hasfj.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname hasfj.exe - 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 2026-09-29_c542316b116457aed5c3d8aa91c02597_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 3808 wrote to memory of 4052 3808 2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-29_c542316b116457aed5c3d8aa91c02597_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3808 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
PID:4052
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 0fab3a69a7cb3ab83431e70cbcd56f9f69205b0ae95b651bf9af7610f67627fd
- MD5 5da721007d0ab7cd65d8a5475f05f7d3
- SHA1 5f75d768fa80cc9c5aa5075318a7628f3d9df7ef
- SHA512 db21dfa6611226dd139ff3bd4381738da9bffa4b685d6b2cf007aaf4ab03e66da551bb82c9916d018eb8ccb61d92f229064ebc9333b12330a3e042e80d8a2e34
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZwg:bgGYcA/53GAGgIvFbf
- TLSH T1FF3333387FE62972E37BDFB586F651C6B97578223D16980D40CA43844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH