Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
23/07/2026, 07:51
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe
- Size 1.0MB
- Sample260723-jp94wsac55
- SHA256 3102639b577f0be3730d32b295b65c9ca4a8063ca760c7f59706cf356b655f50
- MD5 55371cd1611222fb4e6bcae10ac1953e
- SHA1 3e1487f3ed6786dc8c3383cd90c30ee806a4806e
- SHA512 c2057307f7ddb87a9f5b61df7f8bf58961988ad8c9a8ab1947802abc4e9a5aa6a09f0b168b0538a53986485d13a2df5fff8e562ebe04222b51a34e8f98d4f276
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqs:bGbvflT/ZFIjBzhxwOgXKarY1iB9
- TLSH T1FF2509BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3516-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b871-13.dat CryptoLocker_rule2 behavioral2/memory/1732-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1732-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1732 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 2026-07-23_55371cd1611222fb4e6bcae10ac1953e_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 3516 wrote to memory of 1732 3516 2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-23_55371cd1611222fb4e6bcae10ac1953e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3516 -
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:1732
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 1.0MB
- SHA256 63f8ec43f0f844804d790cfdd0c92e0107f2e47179a6876c17e6b486e097a2b8
- MD5 b238f6ebc139b602ca747edd88bf56c1
- SHA1 acb537804bb709b61187a8055c4cd115f05038e9
- SHA512 b420da4ca661db3cbc409e833df771f65199dcf48160f079683edefb308347f5fd549f80ef143c960a9312492384a910998be63f614d5ff9a3c2ff436575b960
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqp:bGbvflT/ZFIjBzhxwOgXKarY1iBQ
- TLSH T17A2509BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH