Analysis
- max time kernel
150s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
30/07/2026, 01:28
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe
- Size 4.6MB
- Sample260730-bvn5lsaa73
- SHA256 368372d4e0478cb822bce1d6160c647e6a8f01c17cd073d3bf4b30caf8f5051c
- MD5 5efbd8470aeedf879fd23b9eb0dfef5e
- SHA1 1a5d45d572fd8e9bf4d6b86cff1be3a53bb8a8f5
- SHA512 9c90c198bac4a89f46807c567009ba885fd521a05da068ee344c2400fdd8e93d44b3fc7bfac160a24113c3fdfce997bae40c10514528105eae336ed3ceb3b146
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTB:w/ZFIjBzF/ZFIjBzPEUusB
- TLSH T1FA363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5812-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001000000001c57b-12.dat CryptoLocker_rule2 behavioral2/memory/2612-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2612-20-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x001000000001c57b-12.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 2612 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 2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_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 5812 wrote to memory of 2612 5812 2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-30_5efbd8470aeedf879fd23b9eb0dfef5e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5812 -
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:2612
-
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 39840f193e813ff7deb87e7f20a2101cb46e820dc10d712d211111b48be465d6
- MD5 93e4e2011fd59e9aed621b6f8ce220ff
- SHA1 75472585a687a2e000803b9979825251cf504e36
- SHA512 7d06f5670be63a4cb126caee6b702cd587cfa26865181711d291bd329ecfd19fdee2099bdebb38ca665c918aaed534c4ffe69a2747ec48cf302ede956a80273f
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTl:w/ZFIjBzF/ZFIjBzPEUusl
- TLSH T1EE363C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH