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
07/08/2026, 06:43
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe
- Size 4.6MB
- Sample260807-hhfe9ssvhs
- SHA256 dab5e3cc9311ede0e6b29d53bd1dbae2f65fb42ead94db1f86c194cb12fbe53c
- MD5 cf5535988144cc4ae186ec40805b2205
- SHA1 b5a7dd9850b0ad0ddbf850be413b4e2c5eae4693
- SHA512 dfb7551ed89e1b90042503b6cd57c8d2059f55199551e961e7fddd4a585747534796be758900c14b43497e48a7b4433354b95b2c180a34911ddc7418a55c5181
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTB:w/ZFIjBzF/ZFIjBzPEUusB
- TLSH T117363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4172-9-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c588-13.dat CryptoLocker_rule2 behavioral2/memory/2856-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2856-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000d00000001c588-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 2856 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4172 wrote to memory of 2856 4172 2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_cf5535988144cc4ae186ec40805b2205_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4172 -
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:2856
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 4.6MB
- SHA256 98f9c1f7a4656fc61cd48969316668e562dbc75e577abe0872290d7040fa1055
- MD5 1e0502104646e37a520d3fc8c7e6991e
- SHA1 89c876ae4b8f9ca15b4ca8ea71a98b39e8e68af6
- SHA512 4ca32511ffca016b14037e9eb0f305978aa5f1a1e1e5adc0c4186354903577eadc2424aa535caebf377dc484cc176d2ef251b68021ec08e87f2cf5fce73ef518
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTw:w/ZFIjBzF/ZFIjBzPEUusw
- TLSH T1AB363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH