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
08/08/2026, 22:42
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe
- Size 42KB
- Sample260808-2m4s7szvbw
- SHA256 e171d349b909ad70447f5e353a45aa4a118b4b7465fa4375aaa3808f524524ee
- MD5 bef5efc1864e5ad63b95239f59ddb42e
- SHA1 44a6fa30c7139e3c4a6058d31a1b67bfd060ebb7
- SHA512 b8cd785f4b034aec1eae0863718519a0ca62ce2f2e35331e471b03be8364b0d9038cd5aae518a8130baa87218954db4b8916844499de53ec784a316cf0834712
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCw:bgGYcA/53GAGgIvFd
- TLSH T1611374387FE62972E37BDFB586F691C27975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4416-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000600000001e6bc-13.dat CryptoLocker_rule2 behavioral1/memory/3376-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3376-19-0x0000000008000000-0x000000000800A000-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-1-5-21-2370214745-1838013427-2987045292-1000\Control Panel\International\Geo\Nation 2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 3376 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_bef5efc1864e5ad63b95239f59ddb42e_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 4416 wrote to memory of 3376 4416 2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-08_bef5efc1864e5ad63b95239f59ddb42e_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4416 -
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:3376
-
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 e83adb6b51d446eb94cc9bfd9eac4731a9591dff12d7ca6db96029b84bb10d4e
- MD5 f7dffae2fe90d762dcc6d232ae60d207
- SHA1 37a69e4272c006ff7b674efa4b95e73fe1ae209d
- SHA512 d366f2345b3375545c8f287207b41283ea75446aebdbaa8d6e0b9437e94735e176d006c17af32769d9d68243b26f587e37c488df9a65eadc2c0573b58e60625b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCOH:bgGYcA/53GAGgIvFvH
- TLSH T1AE1374387FE62972E37BDFB586F691C27975B8223D16980D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH