Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
01/07/2026, 01:42
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe
Resource
win11ltsc2024-20260629-en
5 signatures
150 seconds
General
- Target 2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe
- Size 46KB
- Sample260701-b4rxvsdz3y
- SHA256 6378d4e9fae26ab29f980b0e7d7c64db98add7425c7b1c2ff89a5a2f6b1c8f08
- MD5 e71585c8b0ccc1a5f841cd5881ca68a5
- SHA1 03e31837e9cd20294d7af383d22a434f3999b9fb
- SHA512 78507ead17d5efcb92a8e2a160513f693b29d101c1129458349a64bf6c8521490452e99b61f74230a764e5690d95b83c5491deb61f4406bd1ee193a72059a45b
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhl:bgGYcA/53GAGgIvF7ED
- TLSH T1022322387BD62932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3552-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x002c0000000118d8-13.dat CryptoLocker_rule2 behavioral2/memory/5420-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5420-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5420 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 2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_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 3552 wrote to memory of 5420 3552 2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-01_e71585c8b0ccc1a5f841cd5881ca68a5_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3552 -
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:5420
-
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 00759b093119052845cda14f43a7a1c7f47a3c9db69072ebf6602dcb4228b207
- MD5 ddf5c4342367b053707e586d36d234a2
- SHA1 d4bd691f3815b5d72a8259eb2266a0513f5d4666
- SHA512 747b6f45d788ea8750f5dbddc822949adcad8cf33c6fcc73ad062e06685e80cff70c07d9793812188cce8f56e6fba389857a25c81fd2655a35b5423d8e08f143
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhn:bgGYcA/53GAGgIvF7Eh
- TLSH T1672322387BE52932D37BDFB586F691C6B975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH