Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
06/08/2026, 02:20
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe
- Size 47KB
- Sample260806-csph2afd38
- SHA256 fcadc713e222b94f742d6d923562ec9b2f06290db61f52aa07ab73fb2725c7a5
- MD5 3c2db3aa32beb5b9cb91d502a9f42da6
- SHA1 2a4b58a335b886719dbe79177de185d1d6390b12
- SHA512 8c301b8eb39e071fbee405728480ec3dcba1d690380e395421abf4f68010d982fcf78c8db77d1884be1c3ce1ea2b42c9fbd48cf593ed7ea0f65535e500953070
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcX6kYP:bgGYcA/53GAGgIvFwP
- TLSH T1F92334387FE62972D37BDFB586F691C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4448-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a0000000243cc-13.dat CryptoLocker_rule2 behavioral1/memory/4024-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4024-19-0x0000000008000000-0x000000000800A000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation 2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4024 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 2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_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 4448 wrote to memory of 4024 4448 2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-05_3c2db3aa32beb5b9cb91d502a9f42da6_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4448 -
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:4024
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 47KB
- SHA256 ac739ff1ad2178b7058b3ae3ff60e6ae5611777c7f933fc6116154c34a511700
- MD5 51e3ba4d85d377fae22b4c5a527ac30b
- SHA1 6ae41f9bc245dfccecb28f36e0026befa1bea7ad
- SHA512 cf99586f26c33a3da593204baa7531d1cc00a58dd7c61ca70c7419abaf4cd58eb9651dd5bd2346338bf6b21d843a6c51863807af18812d1bb165855680d25400
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcX6kYs:bgGYcA/53GAGgIvFws
- TLSH T1232334387FE62972D37BDFB586F691C6B93578223D16980D40CA43844833F66DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH