Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
25/08/2026, 12:59
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe
- Size 49KB
- Sample260825-p8a2sssenc
- SHA256 f9371181d31ac1f669750202721ccac051423d5a4b07ed694ce4bead956939ef
- MD5 57551dcfe85ae40527c52505e08cc4cd
- SHA1 dd0b0417f41c61ff7ccd1ea5aa6b1f350beeda0d
- SHA512 8ea478b12ed0835fd1c96add07769cbc8d6105307e4acbad98e0808e45d819f34d0f16b9f4590de9e42f2f093b5ed5c5f435d0c81641e2c3a8700cd76eb3fbed
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/du:bgGYcA/53GAGgIvF9v2Zj
- TLSH T1D83333387FE56972E37BCFB586F691C2B975B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4472-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000011394-13.dat CryptoLocker_rule2 behavioral2/memory/5560-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5560-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5560 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 2026-08-24_57551dcfe85ae40527c52505e08cc4cd_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 4472 wrote to memory of 5560 4472 2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-24_57551dcfe85ae40527c52505e08cc4cd_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4472 -
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:5560
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 a0552b3d9ced035e73715d5e6a3f26c832b8d33b6b61ff2c39222c7c257d0edb
- MD5 be7580d20d693509cb84c57aa1b9078d
- SHA1 a392d570ab90a904fd4e126e2851df626fbd8aed
- SHA512 2a781cb54c665cd5feb704e6a02d47b9fa4715b1cee507930fcdb1aedef95e3ade5fe202eaadaf6fd920cbb39924a16646140b575bc88c330755a11c502f8edc
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/d8:bgGYcA/53GAGgIvF9v2Z1
- TLSH T1493333387FE56972E37BCFB586F691C2B975B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH