Analysis
- max time kernel
145s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
21/07/2026, 03:49
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe
- Size 41KB
- Sample260721-edv4dafv3x
- SHA256 ed716990fd487d58472355451dbd24ae422f79e7120a3906b7397491500e2d5e
- MD5 cf4dc50e80089377d79ac78059e6ee77
- SHA1 ad37e9f74e623509a829961f7f854a72e8eadf90
- SHA512 40486cfce13ce4a71f5bf3f24052a00486fbbe3e9abd6c02c4db03fd87708b8e4b4c7f82931b9bf2eecbbef68b95226e41c488e7d529611489ebdb1364e2e42f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCr:bgGYcA/53GAGgIvFq
- TLSH T1831375387FD62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4832-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b83c-13.dat CryptoLocker_rule2 behavioral2/memory/528-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/528-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 528 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 2026-07-21_cf4dc50e80089377d79ac78059e6ee77_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 4832 wrote to memory of 528 4832 2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-21_cf4dc50e80089377d79ac78059e6ee77_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4832 -
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:528
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 82e9fb25c63734ffd200a041e113c7ac3ad496ee86bdd642251ebcfaa86f5d7d
- MD5 e7eb146f9c448544c64bdbf803db0362
- SHA1 6e389dab1b77e596f19e1c05928ccb78c67c544a
- SHA512 820efda5903aa92657560975ba300242c5cabcf284321ee443792c833f5c03c9949ae70942a73ab1454e0e9c5c32f87234d4586997b7dd3e1c4bf230d675df72
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCT:bgGYcA/53GAGgIvFq
- TLSH T1631375387FD62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH