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
31/07/2026, 06:57
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe
- Size 4.6MB
- Sample260731-hraw5swgrc
- SHA256 a3150ca2e8a3b262b54747eab953955f59e269c08806e46198fc36883e1f9afb
- MD5 c7d927e86150be0941535dc76b5b8fee
- SHA1 125d8432291dbd92510cbc3fd2851713f655d1f4
- SHA512 d745e7299e0e5309defb2b74573a271b72a9ab4875634dfd3a358245bf17155cfce5c3cd4b3f3d2904ad2ae52c0ffdf2080f0eaf95c50aab723ebec1bf1b584f
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymT0:w/ZFIjBzF/ZFIjBzPEUus0
- TLSH T153263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4436-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b000000019cb8-13.dat CryptoLocker_rule2 behavioral2/memory/1712-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1712-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000b000000019cb8-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 1712 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 2026-07-31_c7d927e86150be0941535dc76b5b8fee_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 4436 wrote to memory of 1712 4436 2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-31_c7d927e86150be0941535dc76b5b8fee_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4436 -
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:1712
-
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 5ee4b703c4e18b53871802883fb049ce2b6cc79bfe57dc078e1ef8c93a6c44c5
- MD5 f8e61e578c17d6d172409245a1b44ae2
- SHA1 712f278dadf43b62907c1715670e821e5090d0c7
- SHA512 b0601bc9f083b7fc1c35c832cf7ec50ddfe185893b75fa0f10f3fa7f5aaa28e577039b44d6a5dfd7e34f431da200098dd10b49ce80c8299fae54969ef9e7ba81
- SSDEEP 98304:uR/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTt:w/ZFIjBzF/ZFIjBzPEUust
- TLSH T1AC263C5BA8E650A4C8FAD8348BE9E223FF633459473577E31BA091601F25BD0F8B9711
- MD5 SHA1 SHA512 SSDEEP TLSH