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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/03/2024, 01:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe
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Size
49KB
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MD5
9bbc3654bf035bf853d9d15d3864b2bc
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SHA1
500a4b8253adc2b189401d3be3059e4104ebe2c6
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SHA256
48a489e581639a66722b8c08dad46a77be4f106ac44903100f86ef3cae4ce421
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SHA512
96b44c20f8c46a56eb6d13cabf1ce7422cb60cef6ba6c91e80dd5e9d9f9a14bf57f34ff3751d7ad1f4a328e3404653b7c6bf506bcb7aec230d09b2e29b289072
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impy1:BbdDmjr+OtEvwDpjMy
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1724-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012272-11.dat CryptoLocker_rule2 behavioral1/memory/1724-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1724-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1724-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1724-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0008000000012272-11.dat UPX behavioral1/memory/1724-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2548 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1724 2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe -
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 1724 wrote to memory of 2548 1724 2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe 28 PID 1724 wrote to memory of 2548 1724 2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe 28 PID 1724 wrote to memory of 2548 1724 2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe 28 PID 1724 wrote to memory of 2548 1724 2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-11_9bbc3654bf035bf853d9d15d3864b2bc_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2548
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD5913f703825c034341e1dc23af23a5274
SHA156e59ff7cb9f9119ac985d7e80f524251bf5df2d
SHA2563d4caaeee1af84493e1c4c765a50e323519fe12a98d4107fec545221912e6a0e
SHA512e2bd569af040a353d73a335fbc0c971e8bc6e2a75e84a26a0e3f0b96c105da0389980162a5dc744a922ebe7f9c3ea3d11739be689969bb28bca93784eee12385