Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
06/03/2024, 14:41
Behavioral task
behavioral1
Sample
2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe
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Size
105KB
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MD5
f1d326ed03b1cb7df5aac3bbfb2a2e62
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SHA1
e5fc9f40fa8eaf6c3be2c5c557b5a607107a5ea6
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SHA256
31098a390af934db3da45f5999937b5044f16afc9bbaba98571f6f0b9b4e3409
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SHA512
bc6e2097e94ffb611368747fd3f575be32679b3fc90fa2b26d477ab7621d3210124f7b977fad971a7be147c0b89dd9a4ceaed7441f12cd99fe14950c8e32ab01
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksyJ:1nK6a+qdOOtEvwDpjyJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2036-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000e000000012253-11.dat CryptoLocker_rule2 behavioral1/memory/2036-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2080-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2036-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000e000000012253-11.dat CryptoLocker_set1 behavioral1/memory/2036-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2080-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2036-1-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000e000000012253-11.dat UPX behavioral1/memory/2036-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2080-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2080-25-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2080 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2036 2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe -
resource yara_rule behavioral1/memory/2036-1-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000e000000012253-11.dat upx behavioral1/memory/2036-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2080-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2080-25-0x0000000000500000-0x000000000050F311-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 2036 wrote to memory of 2080 2036 2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe 28 PID 2036 wrote to memory of 2080 2036 2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe 28 PID 2036 wrote to memory of 2080 2036 2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe 28 PID 2036 wrote to memory of 2080 2036 2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-06_f1d326ed03b1cb7df5aac3bbfb2a2e62_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2080
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
105KB
MD50097a2ed9c380a257d7aebfd2742dc9a
SHA187ea776b23dad4de63091db4bfa27108f9ccaf8b
SHA25614607b08c60e204f7833e11f663ab647f8d6ec3db6c443b10a2e3e67bf6554ec
SHA5123d716803dc39a7c07e9fe8cf540669bd7d90ef88cec4d396913cfa27ef584e0df351a8279b550d0931bdf7cf86cbace854257318740551462430eee992912931