Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
07/08/2026, 10:16
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe
- Size 48KB
- Sample260807-ma4kcafc46
- SHA256 5e3e87ef88a97edc549a36b8127abfe709068f588e2d1eb323c58cbab49c17bc
- MD5 41c56c6d70c97c56da2b89e6501febd0
- SHA1 c79451ed5bcc3ba467ac0edde79c58fc8974262d
- SHA512 e02cd622d5035df8b3624896c1ce428a64544603bd864c47cb19f2f03420bb2c180be224a6eb842c279275dab4991f95cc9c428d5194135c9a89e61c70ba9120
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAa:bgGYcA/53GAGgIvF9v2ZZa
- TLSH T1042344387FE66932E37BCFB586F651C2B935B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4584-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001300000001b1d0-13.dat CryptoLocker_rule2 behavioral2/memory/1688-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1688-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1688 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 2026-08-07_41c56c6d70c97c56da2b89e6501febd0_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 4584 wrote to memory of 1688 4584 2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-07_41c56c6d70c97c56da2b89e6501febd0_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4584 -
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:1688
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 49KB
- SHA256 5e0e56d1b5dcf231d98ec992f81eb89a5e090c0ed08e353906aaea7bf35756d2
- MD5 6800f569fb5a5df65ef0de65cbcf7169
- SHA1 e05a7d0ca4ed8e9434460039580ed79aa964c00f
- SHA512 0e4d21ffa517115dd10e0679f4eb827443d4ffd0d5e91d3ba5337cbc63e45c402c547dc410a23da5a01ab587c990abb6273fe3769de625c6b1268d309077b882
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCAzr2ZEXIKJTAD:bgGYcA/53GAGgIvF9v2ZZD
- TLSH T1353344387FE66932E37BCFB586F651C6B975B8223D16980D40CA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH