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
17/08/2026, 09:19
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe
- Size 49KB
- Sample260817-k964eaxyav
- SHA256 a6712ae988f43bf0a94fbfbbf86cb50102f529c0b929944b953e3606d68ecba5
- MD5 31b7f14b0b84d4abb10bb5b3b71a3eab
- SHA1 3be58912d37930afa7ef485506484741520aaa49
- SHA512 4d7431941053a8cc35f890e610de782208660408f78dde1c603975864f38adf0768dafd701d13e7c1c96f115529903bb677ec296e8fe9bd68c0bd3900335198f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/7:bgGYcA/53GAGgIvF9v2Zw
- TLSH T19C3343387FE56972E37BCFB586F691C2B975B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4140-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0006000000016b3a-13.dat CryptoLocker_rule2 behavioral2/memory/4836-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4836-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4836 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 2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_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 4140 wrote to memory of 4836 4140 2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-17_31b7f14b0b84d4abb10bb5b3b71a3eab_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4140 -
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:4836
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 50KB
- SHA256 c9c5d1be4d35d75de27deeb74fe9e10c6dae5313c486f20c3307bda702773316
- MD5 373742478073d0fc2f865e8baf351289
- SHA1 7ccbfe9467674aeca852bb0837ee6477ed28a9c3
- SHA512 6917f3dd017e8fe013bdf0d7e4198d41921adbb4adae951afde914949827a2671be5ea0b72114674097771d50bfd7bec3f7ba0ea3b0876ecb178e35e3726db52
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIK/B:bgGYcA/53GAGgIvF9v2Z+
- TLSH T1E93333387FE56972E37BCFB586F691C2B975B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH