Analysis
- max time kernel
150s - 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
19/07/2026, 03:00
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe
- Size 41KB
- Sample260719-dhcbdsas4p
- SHA256 05cd0558efb4fa1d0c11453440b85171f01255268864443360e53ad6adf7a46f
- MD5 ff8aeba3a99b612524358dd1edc960b3
- SHA1 26b9108dd1d44c05ca21c5fb780afe0c20352b1b
- SHA512 2aa174a0fa5541186305f48d79b84a04e32526d6606fd6ea24bfe8fc051ec73cd9f9f3663b524e238ca634bfcf74d82f9c02ae148eb5897a791b12dd6174c123
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC2:bgGYcA/53GAGgIvFn
- TLSH T1D01374387BE62972E37BDFB586F691C27975B8223D16880D44CE53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1856-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000187d5-13.dat CryptoLocker_rule2 behavioral2/memory/5388-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5388-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5388 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1856 wrote to memory of 5388 1856 2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-19_ff8aeba3a99b612524358dd1edc960b3_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1856 -
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:5388
-
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 481c99dbe0f854d1b7c65e21913532911070dc0e68c24d615c3a792fca638b94
- MD5 7023ceeb301f8360af41892ffdd07e26
- SHA1 8f75418d63a755a260b71a9a86175959c3aeae59
- SHA512 7dbc0ba163107feb5f6f2b054b7fd4b8ad8840c5e48c6acf6ddd3692b7949b6145df5383930c635d9f5fb12e8dc0a4ecc489cb1e878cb5444af237d31888ac8a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC9:bgGYcA/53GAGgIvFo
- TLSH T1721374387FE62972E37BDFB586F691C27975B8223D16880D44CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH