Analysis
- max time kernel
150s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
16/04/2026, 01:44
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe
Resource
win10v2004-20260130-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe
Resource
win11-20260130-en
5 signatures
150 seconds
General
- Target 2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe
- Size 43KB
- Sample260416-b54caady7l
- SHA256 90eb0fb7546f94794a0f5b02d99224f2aed7baf888ae4100741bbb39cb2bcc1b
- MD5 3d4d4623efaea5fca06efa733751b7cb
- SHA1 ecf216f0889c431d04ff7c498c008f8241b1f863
- SHA512 c9f3f5cdbe66a8b16bd32e259e8bb191861746a99074b78e05647886421dd4a264266365f83ae348989869c056ed5dd78e59a703c18d490bbf383de155e8b08d
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXZ:bgGYcA/53GAGgIvFj
- TLSH T1861365387FD62972D37BDFB586F691C6B935B8223D16980D40CA53844833F66DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2244-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002ab70-13.dat CryptoLocker_rule2 behavioral2/memory/4972-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4972-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4972 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 2026-04-16_3d4d4623efaea5fca06efa733751b7cb_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 2244 wrote to memory of 4972 2244 2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-16_3d4d4623efaea5fca06efa733751b7cb_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244 -
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:4972
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 44KB
- SHA256 a81e4bfe8abeffd302cffb511078bdc38c942e7c24e8ab8be8ddd49256fcd6bb
- MD5 117f5e4e2fdd22ed4259cef27ae713b5
- SHA1 afd89379cae2ec1f590727e6717fd3e2edfb46c0
- SHA512 51dedf22404b2c94a43404b06fdf1cbf36a3221fcc8a833fe857b5888965ee7be684bf9ec231cf3939ae68fe218bd1c229865f3638ae90b92b9a8db6e8627937
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXd:bgGYcA/53GAGgIvFX
- TLSH T1D11355387FE62972D37BDFB586F691C6B93578223D16980D40CA53444833F65DCA1A0E
- MD5 SHA1 SHA512 SSDEEP TLSH