Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
07/08/2026, 09:16
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe
- Size 46KB
- Sample260807-k8mclsfa39
- SHA256 ddbe534b4a6e807430970b7fad15ab2ec0f06390794c6d18a16d23133659026b
- MD5 22f9cdf2c0b218eff52df67e7ec96d20
- SHA1 4eb421e3bb40575ebc00db2e308683f0c3a92bae
- SHA512 dec183986d6230a3bba91896d52ae7c2f096d65f588e0b4e82bd8f60c1fd2dc1b24f8398c0e588cd763ac051e9f6f52528ddcd81e684b78554a65e5cd3300ab5
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTg:bgGYcA/53GAGgIvFZ
- TLSH T1B32355387FE62972D37BDF7586F691C2B975B8223D16980D40CA43444833F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4844-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000024597-13.dat CryptoLocker_rule2 behavioral1/memory/4276-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/4276-25-0x0000000008000000-0x000000000800A000-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 2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 4276 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 2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_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 4844 wrote to memory of 4276 4844 2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe 83
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_22f9cdf2c0b218eff52df67e7ec96d20_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4844 -
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:4276
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 6985e1401a2fb4159c64c9a81b7f44c88d4f1858db7d4633ba6929c11d4898f2
- MD5 8cd3c2ff88a2afb914e28dc32ad0704a
- SHA1 cb3f3e73c80f4c68f6320899a883b5c2e2807a14
- SHA512 1c2155db3be964b8dab1e7b474be4787fc8cd003cb71d5f0226f4b017cce570b9c47bd50601d257a84c16dee989bdbe1b594ec646912eeb2ba87fca270f0fe84
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCTn:bgGYcA/53GAGgIvFS
- TLSH T1B82355387FE52972D37BDFB586F691C2B975B8223D16980D40CA43444833F66ECA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH