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Analysis
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max time kernel
148s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
13/10/2024, 18:43
Behavioral task
behavioral1
Sample
2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe
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Size
40KB
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MD5
059e98425ebbb4585f04c7e45826dd39
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SHA1
b73a3c605b326b76dedfe3e53bd356637758fc6e
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SHA256
3ed0c6450c188d2207dfd65a1e07d6e50d5a8fb5f8a874f02e645016a10ad14f
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SHA512
365635c32080ab5eaeabbb37802ce2b5407a71889c083dbb44fa715a21252229744055c918c005713ccfdda01aa3569deeb9f13af7bd9978cad4106c4a8db23a
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaB0E:qDdFJy3QMOtEvwDpjjWMl7Tdz
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation 2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 628 asih.exe -
resource yara_rule behavioral2/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000a000000023c24-13.dat upx behavioral2/memory/2320-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/628-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2320 wrote to memory of 628 2320 2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe 84 PID 2320 wrote to memory of 628 2320 2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe 84 PID 2320 wrote to memory of 628 2320 2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-13_059e98425ebbb4585f04c7e45826dd39_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:628
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD51de1fc75dda19f3e2e42b103ce38bca6
SHA1321374bcebf19184c8f0b8d8c1c018311ef42d52
SHA25630170b444be8551cd5bafb6d97dd1c9a815009cd5b8679ac9b057e600e30703c
SHA5128f8149a5edc980357ee936218b02ab79afcbd6507670eaef1f0f40e8ff1c010ff4e04104423a3ff4da38bb8bb68dbb36eb4d182ab060d8bd2dc37d9b68ef7d57