Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 20:15
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe
- Size 46KB
- Sample260804-y11rxsyfpf
- SHA256 0642cbb470b3df89badff25a1e7cf93bca949510c434d9fb426a57314023e813
- MD5 523e5e46493444f65a0382dff57ece24
- SHA1 312865b18231c685c26d364a2ac0436b32358eff
- SHA512 17f11e461b483f33cadf1082fe4cf2d3a9e0e8549789d95ce1355968feefd285a5182ab66e9ce00137c415d5267019187b03fd9d5363c2719c433a721aeb1788
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhvz:bgGYcA/53GAGgIvF7EJz
- TLSH T1732321387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4136-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e00000001c535-13.dat CryptoLocker_rule2 behavioral2/memory/2324-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2324-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2324 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 2026-08-04_523e5e46493444f65a0382dff57ece24_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 4136 wrote to memory of 2324 4136 2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_523e5e46493444f65a0382dff57ece24_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4136 -
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:2324
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 46KB
- SHA256 8b2c49d1aa5b22dc4b2bb758ee0fdffc04cee7d8d29894f6f0bdbec79dbd0ba2
- MD5 bd9f5e786300cf2f6fb51cd0dd19e67a
- SHA1 ddcf4069bb27cbd18d820575699236768036b0a5
- SHA512 6bd3adebc2d832f2b7c1fced9c671d2a142a50b378c21f95c51c3167bf165532522ac25633aba18b592ab9e2d235ddb6e9de3d58f221c2e136023f49825fce8a
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhv2:bgGYcA/53GAGgIvF7EJ2
- TLSH T1962331387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH