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
28/07/2026, 01:00
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe
- Size 4.6MB
- Sample260728-bctblsvepg
- SHA256 7fb2fd8d515f04e5628fe627e1fc376c3372e1969c7ae11c33078369036a366d
- MD5 fc019fecdc1298310b0d3dac66a75b92
- SHA1 c66e40bc806ec4a682cc19d36d3467d96a45bb58
- SHA512 d7c035b28342798093064a0101d857a1e0ab04fe2b2dd4089c7ee42eebd3c584e79e2db87266012e9adbdff1636a07bf36356c227ca5677a673c2e094c2a022c
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTb:w/ZFIjBzF/ZFIjBzPEUusb
- TLSH T186263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5528-8-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000016bc9-13.dat CryptoLocker_rule2 behavioral2/memory/3880-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3880-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x0009000000016bc9-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 3880 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 2026-07-28_fc019fecdc1298310b0d3dac66a75b92_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 5528 wrote to memory of 3880 5528 2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-28_fc019fecdc1298310b0d3dac66a75b92_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5528 -
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:3880
-
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 7c9e2d66637b02c53e8a17e65187485e9ed63dbf8771cefca4a6034741b267bb
- MD5 2f7ae62800d4b8c64d5d0c01bb1a9280
- SHA1 bcf0002faf8d5c3e858acc2ed459b26f79813c1a
- SHA512 20d3e0fda554f86fa49151676ed0d787dc0716fb35b7e0028fe719b94bf35bcdc56d4f6c9ff3c1d43e7b223a8cd857db18939eb50b3cb47e0631b5725d4a93a8
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT1:w/ZFIjBzF/ZFIjBzPEUus1
- TLSH T10A263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH