Analysis
- max time kernel
150s - max time network
155s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
12/08/2026, 21:40
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe
- Size 41KB
- Sample260812-1jcd4sen6x
- SHA256 60ef50149c9f11ca6581be399fc25f03e2e9bc12ea3e70afa140c7758dea4ef4
- MD5 fe86baad38b0ce8f0dc687791a813ef2
- SHA1 8f33a674955d0a0c7851752df092669f1ad9ca21
- SHA512 646ccb8ddca3199462b3ae93c476d865ba249e3b92ec8b335abc46874714a9f2489752d4022dd659487df4923b8043f1ee501079dd12b5d90b2f0ae2d62be249
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCp:bgGYcA/53GAGgIvF0
- TLSH T17C1376387FD62972E37BDFB586F691C67935B8223D16880D44CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3320-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001c563-13.dat CryptoLocker_rule2 behavioral2/memory/5496-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5496-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5496 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 2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_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 3320 wrote to memory of 5496 3320 2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-12_fe86baad38b0ce8f0dc687791a813ef2_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3320 -
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:5496
-
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 775339c9e3501ecfd551e89c7fc7fba0db2c49ca795ab451d2c2639625203f8a
- MD5 0678cd73e0eea40aec5ca9c12ea127bd
- SHA1 da84d99c053507e4648a903dd3aaca38693bb1c3
- SHA512 2429458eac9ea4f618a28d624afa2a435bb0e8c02e29f927a9b7562bb97ee2705ab9b573c95d32cf42bf5f26836481d29710485f089f35f498800f452871c9db
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCD:bgGYcA/53GAGgIvFS
- TLSH T10C1375387FE62972E37BDFB586F691C67935B8223D16880D44CA53844833F62EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH