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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
12/05/2024, 19:12
Behavioral task
behavioral1
Sample
2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
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Size
37KB
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MD5
04585406894e53deeafd0dda8d3c5c31
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SHA1
5e1f287765bfa301c7af90933ba7020b4e6aa631
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SHA256
87945097592a7625f5761cf9b5233c1b69e9d480ccf2592b35c0b07615ea6f2f
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SHA512
dac8f268ccc7b5629bf8a2b0be50d56fd9a07d688285817764994265ef34df78996d1ef2025dd79f4b92ffd28c05584288b84d2fb23b3459074d6bdf273b7fac
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SSDEEP
768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3uO:qUmnpomddpMOtEvwDpjjaYaQuO
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000144e9-11.dat CryptoLocker_rule2 behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d0000000144e9-11.dat CryptoLocker_set1 behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d0000000144e9-11.dat UPX behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2496 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2160 2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe -
resource yara_rule behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d0000000144e9-11.dat upx behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2160 wrote to memory of 2496 2160 2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe 28 PID 2160 wrote to memory of 2496 2160 2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe 28 PID 2160 wrote to memory of 2496 2160 2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe 28 PID 2160 wrote to memory of 2496 2160 2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2160 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2496
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD52dcb6ef4b880c285d7994feaf1fa9922
SHA173cffa6192fc9ed72f53a597845164a98a5feefe
SHA256975de1415c01ce16a574c53422db799edda485aade0af61ff8fdd0c1cbdc6152
SHA512c14072fa54bce88b1f63a9b8318393bbb47a68702e0d0c8b6aaef0077a39c2861416a2bbcb0c39a33f8c74880eb87322a53a8eec0e2353986cf61ed067cec8ae