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
30/07/2026, 05:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe
- Size 52KB
- Sample260730-gj9j3adn21
- SHA256 fbfa4d2d776703e39708fdd86639ed11d3890dc1df3bb06736957bdb6f99c507
- MD5 2b1ccf2ead0bb434fdc31e4346dbe291
- SHA1 cf7003bed6425a79bb16c76365dc824dddf508d9
- SHA512 2fa14df57b55c43594a9a35641d98c9f31e54d614d7670ec418aaaf463ae7aedb39875d438bdd9446295b75861c2bd2e61fae5e8e7fe044321701041d1c53275
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/Y:bgGYcA/53GAGgIvF9v2Z7
- TLSH T1253311387BE56972E37BCFB586F691C6B935B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4464-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000024323-13.dat CryptoLocker_rule2 behavioral1/memory/5012-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/5012-19-0x0000000008000000-0x000000000800A000-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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation 2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 5012 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 2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_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 4464 wrote to memory of 5012 4464 2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-30_2b1ccf2ead0bb434fdc31e4346dbe291_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4464 -
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:5012
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 52KB
- SHA256 d476d60ef25b4283758435c4921dddbd3dca363d7794eafa161388a5337c8b69
- MD5 338283d733815626e0bd55307bdac59a
- SHA1 63b767f275ca790a85a8e6807afcc570e210be57
- SHA512 bd82633282371d59d822d0efba75b4381dde8a0c8f1bf1e3faccca8a99a5cd84c842f01700f81a8ace3ba332812e85dcccca8cd7a79bffc873c357514b3a5064
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/4:bgGYcA/53GAGgIvF9v2ZD
- TLSH T1ED3311387BE56972E37BCFB586F691C6B935B8223C16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH