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
11/08/2026, 00:54
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe
- Size 52KB
- Sample260811-a9fakssdmc
- SHA256 ff537dbd070d975a66ecbfa7952c6a1ee06d5c489e052fc89a1ed084ca51fba2
- MD5 ce09ef7eb96965b3f7b3b5af41ab31e7
- SHA1 15ab80f87838c15998ecdcb0e9c98079f39e1dd8
- SHA512 55de2fdf686cb64ec821516702be4961f4225684621754a2524aec4e0a7fc5c1e94dfbe684c550843cbca6b0a532d2f8cf4878bce07d762df384fdf6868fe451
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycQ:bgGYcA/53GAGgIvFW17y
- TLSH T1D33311387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/4556-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000024595-13.dat CryptoLocker_rule2 behavioral1/memory/2136-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2136-19-0x0000000008000000-0x000000000800A000-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 2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe - Executes dropped EXE 1 IoCs
pid Process 2136 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 2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_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 4556 wrote to memory of 2136 4556 2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-10_ce09ef7eb96965b3f7b3b5af41ab31e7_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4556 -
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:2136
-
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 a97fda6925529ed05f56277aae7ac6f7aef7c1f9613b21c341405e80e6fb74d1
- MD5 b79e2c15e44d69ea8fac82ccdfd591c3
- SHA1 205361565c1f9b300841aeaa1a35afd766f7e440
- SHA512 e3b16e059a2916e527c285a2b75afc35ce57152e51ec2efe549c5c4563987f2835fcc901721dc205108e01da6459a230b51cd3e073ae1220ac7c8680ef44703e
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycV:bgGYcA/53GAGgIvFW17D
- TLSH T12A3301387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH