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
21/07/2026, 01:36
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe
- Size 41KB
- Sample260721-b1bfpsbw6j
- SHA256 aae4ea07decef280b3a52451389859e07861354c28a4a14f61172beaea6689ab
- MD5 25e12c072695cefbffc039937ebfa04a
- SHA1 1af18b285d1ef3c88140fc438358e7b5deece4f4
- SHA512 68982d018bd7e0e35c33553340a769c44cee4b0fb8f59996d6981e652e4f585e729bbc93fa396f260501825d2520eca9a09caa16f40e7edddf0802c18a2324fb
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCI:bgGYcA/53GAGgIvFl
- TLSH T1761375387FD62972D37BDFB586F691C67975B8223D16880D44CA53844833F62EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5048-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000016cdc-13.dat CryptoLocker_rule2 behavioral2/memory/4176-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4176-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4176 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 2026-07-21_25e12c072695cefbffc039937ebfa04a_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 5048 wrote to memory of 4176 5048 2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-21_25e12c072695cefbffc039937ebfa04a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048 -
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:4176
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 ff87e64ac577021444a632a3a914e07f89b7d7c2c10c92266d2200672bc8e861
- MD5 6978e4a2436b55600245cd3b61c2bf96
- SHA1 f27d100f9ddfdd896537dd068fe1e3493ed0aa8a
- SHA512 96adc714fac1e648598ae79f2d7383cc49139a47f6364819336649a78d54c26611646162ebe57d9ff13a73625d4819ad82cde757857e9800abbdb605f50ca871
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCaL:bgGYcA/53GAGgIvFTL
- TLSH T1C51385387FD62972E37BDFB586F691C67975B8223D16880D44CA53844833F62EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH