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
13-06-2024 02:52
Behavioral task
behavioral1
Sample
2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe
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Size
98KB
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MD5
6a809ffecf50e550d89f100a6aefbe42
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SHA1
522560f66ee16273cad603029d829acc5ac99933
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SHA256
72d693fdc25d25429a7084db88db2603b304fbf95cc126c905fd3236b8e71713
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SHA512
d6328190d209f485924031f23d84a810fbdb9af4da61cac1ccff797c4216d33f7e824632b71014f89ef1e54896e7d90c4c8194d2cae1fa843c01d98e85dd7cd4
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp01m:AnBdOOtEvwDpj6zY
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001432c-11.dat CryptoLocker_rule2 behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2180-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2180-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001432c-11.dat CryptoLocker_set1 behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2180-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2180-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000c00000001432c-11.dat UPX behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2180-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2180-25-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2180 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2336 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe -
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000c00000001432c-11.dat upx behavioral1/memory/2336-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2180-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2180-25-0x0000000000500000-0x000000000050F000-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 2336 wrote to memory of 2180 2336 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_6a809ffecf50e550d89f100a6aefbe42_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2180
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
98KB
MD501d9df4c038d2466afb8cce788b114ee
SHA13f6c96883a43aa575496740f111eb40bc8334c9b
SHA2568b2f7229887fdb9323b65b9287f76b2c7ebae917f4de5d7fc9cceff864702b8c
SHA51299e70a788e5f7fc487f62191addf9fcc8ffe406c1edd2f462a592f7d141a3dc76df97d89c520aed54c7558cec2ea51fbb64f6265737a397761289fc2f1e1e7e6