Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 00:04
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe
- Size 42KB
- Sample260809-actfyaz1ew
- SHA256 762a97948fb61104fbe33fe17297d5d8d595b007e8d229f9cab2567369aedea7
- MD5 d8556885d4e82fc0ecc3a443246a3634
- SHA1 00dfeb10426ddc7b9387585535fc509205471a7a
- SHA512 f0bc28cce64d11b59932a339402b43e49dc22c5535e3227a933aa676aa90ff076d6af5f05ddc54bd5b5f4826335e575c96235452243686d679dac33c6c4dbc7e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCt:bgGYcA/53GAGgIvF4
- TLSH T1491374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1240-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cb6-13.dat CryptoLocker_rule2 behavioral2/memory/1076-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1076-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1076 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_d8556885d4e82fc0ecc3a443246a3634_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 1240 wrote to memory of 1076 1240 2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_d8556885d4e82fc0ecc3a443246a3634_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240 -
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:1076
-
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 a771843747bad5a7c1b39812f4ade77d049636daf53b23bd07335a8418c45b4c
- MD5 8d0d656d2b384a729db1cfcb759107bd
- SHA1 27409b09bf68efd0d30cb8321d905a88c0a342bf
- SHA512 6340f5c2ef8cf312fad9def497b8b77f43f59a25ecc1ad4b3ff7f8f10a527c446bc2e00eec4f119ce3cfb9d13fa407adce46097613dbac4869c5c55760c6d7f6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCn:bgGYcA/53GAGgIvFG
- TLSH T1AE1374387FE62972E37BDFB586F691C27975B8223D16880D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH