Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
07/08/2026, 16:00
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
6 signatures
150 seconds
General
- Target 2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe
- Size 4.6MB
- Sample260807-tfmx4sgp2w
- SHA256 35ce2649e40466442979357a5b212967a9bcf381a9438f9d7c4ff00abb3ca3d3
- MD5 67990b6b3d48031c6db36ddea8911cb8
- SHA1 2819551e347eda8e9242e9fee5b6e48dac3382fb
- SHA512 0807a2441d44527c3eae34c62f36cd337b92a05184eaa819de093a2ef4812dc40c025000868e6c6b4dffa37aa6e2aee5a063e9eff908eb767e77e8d2353018b2
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTj:w/ZFIjBzF/ZFIjBzPEUusj
- TLSH T114363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2248-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c5d8-13.dat CryptoLocker_rule2 behavioral2/memory/3284-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3284-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000d00000001c5d8-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 3284 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 2026-08-07_67990b6b3d48031c6db36ddea8911cb8_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 2248 wrote to memory of 3284 2248 2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_67990b6b3d48031c6db36ddea8911cb8_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2248 -
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:3284
-
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 bad9453ca2b7b3f94375aaef86f8ce6b389f288fb095b1ffc74cdc6c25a29bcb
- MD5 e0354c20f08fc747d596910875cd0965
- SHA1 e6d0ecbb8484c19a9c63b74b39d9b8e8bc97cb85
- SHA512 1c79bedc2513d5bd8293ef5dc161279095d1178f9d257a8ffee4d28c4cefae58b72e8e0d806a14cbc0f542c4f98d65be762b7941fa0bf776d563f875310e0b72
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT2:w/ZFIjBzF/ZFIjBzPEUus2
- TLSH T1BD363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH