Analysis
- max time kernel
150s - max time network
156s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
16/05/2026, 03:45
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe
- Size 43KB
- Sample260516-ea8v3ady3k
- SHA256 71077c4326ac5c845efd070fc00e2fefb6c99e590a83562210f8794634ba5eb9
- MD5 13eb5774bb1957b321446fecd6503f6a
- SHA1 83ca7085eb0e52ef2ced46ea8d873c53dc90b608
- SHA512 5d79da6193b5e5b44f30143cf6a476bf8b41dfb6d4b0b2002b5f87557fe3e2ae3bd7bc14b968cdf93dd34e5a162215d5cd1a78e25b7bac3762334958dd097c8f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NKgm:bgGYcA/53GAGgIvFWEd
- TLSH T10B1351387FD62932D37BDFB586F691C6B935B8223D16980D40CA53844833F66EC91A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2240-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000b00000002aeda-13.dat CryptoLocker_rule2 behavioral2/memory/4320-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4320-19-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4320 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 2026-05-16_13eb5774bb1957b321446fecd6503f6a_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 2240 wrote to memory of 4320 2240 2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-16_13eb5774bb1957b321446fecd6503f6a_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2240 -
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:4320
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 43KB
- SHA256 20dc9ba085539ec1fe39fbc8070d5dd8f4e416a1aeb485a8396642d3a171ef1b
- MD5 875f3bb48fdf8ea804e6dd15fa70b38a
- SHA1 64d6114ad071ccc0ed8bb3a65f06a3251e8b66f4
- SHA512 d15397b40a40a4b921f761a13ea3ab3fec3e55ccac5e460bf61793be624763d266fc5c21becf268b3c6e9c45a67452b25af1a95e0ad7c7333f625f216ddd41c1
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpc89NKgt:bgGYcA/53GAGgIvFWEe
- TLSH T16C1352387FD62932D37BDFB586F691C6B975B8223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH