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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
25/02/2024, 06:43
Behavioral task
behavioral1
Sample
2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe
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Size
104KB
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MD5
ee21fde179d00d0e84e69b3b0fe89a7e
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SHA1
4190039fbd1bc4d0877fce6ce51e3b1f16babff8
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SHA256
a38eb16c106eb7fe42337c3f883c41a1d0e152931f94ab2306ad93d1c3bb6ba0
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SHA512
a7d1ee87d892d8f74e7c9655cbc99070e4d7390dddbe428b9fddd1fe4bf6b2f0f577432261212068aef2f832df379576c3f471737487c1310a61905e3050e833
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6Gks9:1nK6a+qdOOtEvwDpj9
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1052-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012262-11.dat CryptoLocker_rule2 behavioral1/memory/1052-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1052-14-0x0000000002480000-0x0000000002490000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2488-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2488-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1052-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012262-11.dat CryptoLocker_set1 behavioral1/memory/1052-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1052-14-0x0000000002480000-0x0000000002490000-memory.dmp CryptoLocker_set1 behavioral1/memory/2488-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2488-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1052-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000c000000012262-11.dat UPX behavioral1/memory/1052-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2488-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2488-27-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2488 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1052 2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe -
resource yara_rule behavioral1/memory/1052-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000c000000012262-11.dat upx behavioral1/memory/1052-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2488-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2488-27-0x0000000000500000-0x000000000050F311-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 1052 wrote to memory of 2488 1052 2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe 28 PID 1052 wrote to memory of 2488 1052 2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe 28 PID 1052 wrote to memory of 2488 1052 2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe 28 PID 1052 wrote to memory of 2488 1052 2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-25_ee21fde179d00d0e84e69b3b0fe89a7e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1052 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2488
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
104KB
MD516f050c93e04351916df5cfb735deaf7
SHA16c52bba6bd43762f9287ff611f579aea7557c5d2
SHA256148782b0e6a703332c6c74c717256f473e25f68a36cd6aa30daad848382d59c6
SHA5125ff105fac5497ad2a115920ea5c2a3431f18b5034ab84cf098f843387c41a52d6850f294046f64599523836ff22875aad8bf9124f90abb155492413fdf69671a