Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 19:22
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe
- Size 3.4MB
- Sample260809-x3hhpacm4w
- SHA256 91c09c4f917eb3463a585b5a4e8ea28ac5435cb61953853aa293bd9074fc13c7
- MD5 f07cdfe5086e6b6e95232be894899494
- SHA1 016bc138e4bf0494c733c3d06a550214e5d19bd2
- SHA512 0475f7945c4bc45e23d3c698cd55b94d3142b73d0fe99e827286f153e55edfb2216db686ca6c0c2f09b96fd6a21458ec8ac054416e5e278eaa52908d6cdc23e8
- SSDEEP 49152:uR/ZFIjBzT1CIdSPHf0f/ZFIjBzGAyGs+Q7uOZzNvBLEdfW:uR/ZFIjBzldUfs/ZFIjBz7jSZD7
- TLSH T14EF55C6F68A611A4DCFAC8305BE9F222FF6334594739A7F31AA091201F25BD1F875712
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5540-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000187d5-13.dat CryptoLocker_rule2 behavioral2/memory/944-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/944-20-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x00070000000187d5-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 944 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 2026-08-09_f07cdfe5086e6b6e95232be894899494_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 5540 wrote to memory of 944 5540 2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_f07cdfe5086e6b6e95232be894899494_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5540 -
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:944
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 3.4MB
- SHA256 29e5e8ccda02ead35c14f1a4f8ed3a601ee3c88868c505f0c6ed446d5d60939b
- MD5 d9f9b504dcddbb2c41bac47292175f33
- SHA1 53be3008bccce311f933efb1532d9397d27631b2
- SHA512 de7c80024ad41bf201c41d4e63c38ba0333b2e92dd3b0db57c6bf98bc6a457e22d64ff3188f7e517a6554eec13369ef4f317bfcfea5c18c935fb2768b83a1cd5
- SSDEEP 49152:uR/ZFIjBzT1CIdSPHf0f/ZFIjBzGAyGs+Q7uOZzNvBLEdfx:uR/ZFIjBzldUfs/ZFIjBz7jSZDo
- TLSH T149F55C6F68A611A4DCFAC8305BE9F222FF6334594739A7F31AA091201F25BD1F875712
- MD5 SHA1 SHA512 SSDEEP TLSH