Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
26/08/2026, 16:18
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe
- Size 35KB
- Sample260826-trytrascmg
- SHA256 0431ccbbeec92c0820c26b63eb520d9bdb91d5131f65118c44c963611f361fbe
- MD5 994aebf5366ade7d551ffcf50ea823e4
- SHA1 427cb4a3ad4c6712428c2821c569289dcf663039
- SHA512 260083e5589312ce37ed7f7c78c865bd17095348502a43b405465f4b59ec84ba02795a30a946a7bc18198ee82bbb7bd50a8132193fd27de7a9426f1f8afaeb35
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YtYCHe4NIT:bA74zYcgT/Ekd0ryfjLzViYtYC3qT
- TLSH T15EF284386BD62972D37BDEB595F790C2BD79B8223E158C4E54CA23884C33B52EC4261D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3896-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00170000000243b5-12.dat CryptoLocker_rule2 behavioral1/memory/4260-17-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4260-19-0x0000000008000000-0x0000000008009000-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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation 2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4260 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 2026-08-25_994aebf5366ade7d551ffcf50ea823e4_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 3896 wrote to memory of 4260 3896 2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-25_994aebf5366ade7d551ffcf50ea823e4_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3896 -
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:4260
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 36KB
- SHA256 da8d8e8f6fe6b169458f0560c2b968930e97671f380bc9a8fed595cc6dfdf56d
- MD5 8744a1f7854ab05acb40f051fa937992
- SHA1 ac1caaaf61f5171e95db198eca1b9186bb011669
- SHA512 cbd74431c8336b8683aa425763dbcd0c73a745a6f1759422cccf5a4f7b44811c1f160ef18bb429f8de8117877f6900e75ce41686fe6624672e1b14949174101e
- SSDEEP 384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUuDzaNYqAy/YtYCHe4NIe:bA74zYcgT/Ekd0ryfjLzViYtYC3qe
- TLSH T169F294386BD62972D37BDEB595F790C2BD79B8223E158C4E54CA23884C33B52EC4261D
- MD5 SHA1 SHA512 SSDEEP TLSH