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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
14/02/2024, 19:06
Behavioral task
behavioral1
Sample
2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe
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Size
85KB
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MD5
bd5b0d788e769e0cdf84d3b6e09e505a
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SHA1
ad9263853843603136b3d1b3fde3932dc9984a57
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SHA256
984b8800a5687053c1eb547938d037a5a3564a234451da4fa9f978e1dd355ddc
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SHA512
70ce9502efcb3f6adce346bdaf9d9cb8090fc98757eea8153b09f3dda67b275d8a536394148468b6d2ef84c60ff6aa21fd462d67c48e5165cfcbb47741e1af68
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SSDEEP
768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIgj9:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgr
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012243-11.dat CryptoLocker_rule2 behavioral1/memory/1976-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2680-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2680-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012243-11.dat CryptoLocker_set1 behavioral1/memory/1976-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2680-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2680-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000a000000012243-11.dat UPX behavioral1/memory/1976-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2680-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2680-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2680 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1976 2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe -
resource yara_rule behavioral1/memory/1976-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000a000000012243-11.dat upx behavioral1/memory/1976-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2680-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2680-26-0x0000000000500000-0x000000000050F000-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 1976 wrote to memory of 2680 1976 2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe 28 PID 1976 wrote to memory of 2680 1976 2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe 28 PID 1976 wrote to memory of 2680 1976 2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe 28 PID 1976 wrote to memory of 2680 1976 2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_bd5b0d788e769e0cdf84d3b6e09e505a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1976 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2680
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
85KB
MD5472a8399a3bc04b8de2da6373ed4be91
SHA10758d3574bc933eee0c58742d7bce10d4666a9b6
SHA256637354cc7a98cc9abbde64bccdffe59f0c3624c9dbaa4edc0827de246527473a
SHA512610690a29f9b77274e4ee170ae07b0842624e000edcc2b9ce0938d461410eb445eee26a76309fd6537fd147a671f4e655e59b4db33b34e2046229fe7a2199a09