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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 04:38
Behavioral task
behavioral1
Sample
2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe
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Size
88KB
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MD5
958da012bd185b5676faec41cc41fdb9
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SHA1
a879dd6a1c93418081a530b06599041d7b89f287
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SHA256
f34c13a2a6f92947c93dd3015c702862d7fc5d74d7791d0250eabdd85fc81aad
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SHA512
bb9fe6fe574a8209f231510f0b1a67efe271f8912b68a5302dc1f5b84b7161a4dd134311f98330fcebd512c404793e493c1a768b17ead2d83110da4d3f2324dc
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SSDEEP
768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODZ:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgX
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001226c-11.dat CryptoLocker_rule2 behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001226c-11.dat CryptoLocker_set1 behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d00000001226c-11.dat UPX behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2480 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2108 2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe -
resource yara_rule behavioral1/memory/2108-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d00000001226c-11.dat upx behavioral1/memory/2480-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2108-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2480-26-0x0000000000500000-0x000000000050F000-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 2108 wrote to memory of 2480 2108 2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe 28 PID 2108 wrote to memory of 2480 2108 2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe 28 PID 2108 wrote to memory of 2480 2108 2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe 28 PID 2108 wrote to memory of 2480 2108 2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_958da012bd185b5676faec41cc41fdb9_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2480
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
89KB
MD58ec079d9d3a8e1ed067ee9de407013b5
SHA1dcc871dd4cb3ce9bcd3ac698d59de4e6dd0cf4d2
SHA25691267f60f3961e670bfee6a2f5707eba404e45f8863245e96ab6f5f3b06baee8
SHA5124ef2ec2739fa2dbc5324d84c2c7ecfe4829023d95ae3290613ec04811c5b62bd2bf08d5861aa659c75efc5acb67c38f9cda60c0b431199953e08735745852a9e