Analysis
- max time kernel
150s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 23:47
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe
- Size 42KB
- Sample260809-3sx4aaxeke
- SHA256 4fade02a61eb3218e7633e6cdc8e8e3c8c9e53a8c8799a2f242fa9f9685ef7b7
- MD5 b59f59a83480cc5021caf33e7528ca04
- SHA1 0c81bef9bbb7c99ed5513a07b151033cc743c65e
- SHA512 b309eea94c64492c8d3e4dc58d68bdfab890b01d63ebfc9b43c1379ad77acf5a10e7a718a73dbcb6bf166eb987181d772b93af88a85591d5cf3bf01806412be2
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXC+:bgGYcA/53GAGgIvFX
- TLSH T1CA1374387FE62972E37BDFB586F691C27975B8223D16980D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4084-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cdf-13.dat CryptoLocker_rule2 behavioral2/memory/252-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/252-20-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 252 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 2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4084 wrote to memory of 252 4084 2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_b59f59a83480cc5021caf33e7528ca04_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4084 -
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:252
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 8453bc1422296a3edbafdc208847a69725e0edf99a0815720bd432b25e63634f
- MD5 8417bc2a270f08efb335e6ff83369fd5
- SHA1 3a99120b7d541a644504f1282f0b4f587dca701d
- SHA512 76a82fd14a65e813ac17949be88e00dd77bf9143650d882e98d06a49fb13c9c9aa294d6dcc3320e84988cbe816b1687c1d5ae481ba71038fac66feeb057242d7
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCHQ:bgGYcA/53GAGgIvFmQ
- TLSH T18B1374387FE62972E37BDFB586F691C27975B8223D16980D40CA53844833F66DC61A0E
- MD5 SHA1 SHA512 SSDEEP TLSH