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
16/08/2026, 12:50
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe
- Size 1.0MB
- Sample260816-p259csdd58
- SHA256 488ae5697f40a528c9827a10a6e78df566a40fc5b59ae246ed8c6bb52bb32af0
- MD5 d4fc5e0164bb8329d20001c474b2bd06
- SHA1 a242a4b94536ff55aa358030adc6a4d533de931b
- SHA512 bfcd136f5c93a227a4cf2ba2138adcb44708a380083b2eee0fb4e8a37f378a3f9dc917966e2eaa22119e030571983b010efa68819761e655bb9d8ac5619f56cc
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqf:bGbvflT/ZFIjBzhxwOgXKarY1iBK
- TLSH T1C72509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1744-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000001b840-13.dat CryptoLocker_rule2 behavioral2/memory/1136-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1136-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1136 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1744 wrote to memory of 1136 1744 2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-16_d4fc5e0164bb8329d20001c474b2bd06_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1744 -
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:1136
-
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 d368d70d9f6dd9f3406e926ac965faeb265abd5dabd0125bb8c04ff03ad6b750
- MD5 81192fdcbdb85b6c4407300ee721c028
- SHA1 3a8376ff466680d6985b90c84020b7d31c7ba5ef
- SHA512 8913ebe9a57ffb4b71af6c58c26215c6ee74676a9684620b71bbd0677b3c72a853947f76d07937a85e39bac526f0b399132a4fa1faf10b0a2a7c438d3fb0b433
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPql:bGbvflT/ZFIjBzhxwOgXKarY1iBM
- TLSH T1572509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH