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
26/08/2026, 02:15
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe
- Size 42KB
- Sample260826-cptcta1fqa
- SHA256 5bf6313fc77f3011908d6167febe8ed1cd8dfa0e0b26a4d9f2ea61893a393d43
- MD5 f398d1edd3bafbe65023060083c4a0a1
- SHA1 bd570c7a2dc4aefb146f936d8c6afc99a13fdd6d
- SHA512 363bcc27188422040dd505e63118030d311cb39becfdc5f74b3601f9579068d4d6bcd71e2760d68bcb1fb0f8e7cc2848838512a956c7e39a4403036292cc7955
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCt:bgGYcA/53GAGgIvFw
- TLSH T1FD1374387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3908-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000019caa-13.dat CryptoLocker_rule2 behavioral2/memory/1748-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1748-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1748 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 2026-08-25_f398d1edd3bafbe65023060083c4a0a1_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 3908 wrote to memory of 1748 3908 2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-25_f398d1edd3bafbe65023060083c4a0a1_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3908 -
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:1748
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 43KB
- SHA256 5a75471f04cfd72906b67069c468d726d0cb515c6566da9ca7ad3484477039d4
- MD5 aabe8ac750375d97f460f56ed33a0832
- SHA1 657d6dc516cffe267156f7d6429a911782a317d2
- SHA512 6a353878b57e0f9975a5e3681f5a752986a2f7eb7b2cee683ba0b441ab521a6d0166ea3558b27b7f8add501763ab1cd83704e2ddba3c4b2860feb16ab2399c90
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCv8:bgGYcA/53GAGgIvFB
- TLSH T1DF1373387FE62972E37BDFB586F691C67975B8223D16880D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH