Analysis
- max time kernel
150s - max time network
151s - 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, 01:04
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe
- Size 4.6MB
- Sample260728-be5seshj4s
- SHA256 685a1f02c6b238ab3b33f632903a21ac8c7f5a55d6f631d29cf55db224996143
- MD5 bb5e4fde094ce8a330a221fe0494208e
- SHA1 8ab635642b26282e741c39a29b60f2f7063dca51
- SHA512 2b8ba8e260742aa372ede7aee03d58e6131c862d52c9b4a6e27c2a01662c43de0dec646cc8fc4b33a0c792cc5b33bf2230fd8cd66b094417ddd0d0be98d27d7a
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTz:w/ZFIjBzF/ZFIjBzPEUusz
- TLSH T1DC263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3276-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000011390-13.dat CryptoLocker_rule2 behavioral2/memory/5960-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5960-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000a000000011390-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 5960 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_bb5e4fde094ce8a330a221fe0494208e_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 3276 wrote to memory of 5960 3276 2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-28_bb5e4fde094ce8a330a221fe0494208e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3276 -
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:5960
-
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 de92612a0aeee8d28ed7c5a169b6791f69d30705d7860b79bf76eed3e17ca4af
- MD5 43e3e0be3ef1b8eef78688321e598037
- SHA1 7b42d13cdc02f5816f1dcef6651b7143c34bc834
- SHA512 4bc7aa944c41294be49e4d82d344d0280ae9b89aca6338724c1542c546eeb9389ea52487bc85f92ee4117d859c990003213ddf1b2554f2d34b8b967cc4e0fd9b
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTY:w/ZFIjBzF/ZFIjBzPEUusY
- TLSH T1D5263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH