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Analysis
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max time kernel
142s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
19/02/2024, 08:52
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe
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Size
46KB
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MD5
c5db8b49a28cfda9d8c86c54104e1e89
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SHA1
01814312a96ffe0e53b191ab4f922ad1e0842e1f
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SHA256
5a96a8532e438520585af48a3556508d8749deb013edcc8e619f6d2b0811b3f2
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SHA512
3fac67df0e6a93989bdb5777e128cac4504973c7e8e6c61dd5dc527dc026bc2721b83d319762a532d6a993fceef87eb6374f870db7230a2cad8b59d9108e6022
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SSDEEP
768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoN:qmbhXDmjr5MOtEvwDpj5cDtKkQZQT
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1988-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012238-11.dat CryptoLocker_rule2 behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1988-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000012238-11.dat UPX behavioral1/memory/1988-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2272-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2272-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2272 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1988 2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe -
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 1988 wrote to memory of 2272 1988 2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe 28 PID 1988 wrote to memory of 2272 1988 2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe 28 PID 1988 wrote to memory of 2272 1988 2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe 28 PID 1988 wrote to memory of 2272 1988 2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_c5db8b49a28cfda9d8c86c54104e1e89_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2272
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD5906777c3ae952d17c42680ec2d16312a
SHA1ec537f605fdeac93ef9496e520edebbc8ae22a89
SHA2569c3527488723a5a84ec636f0f91e5ffa6198a5394524630f1e2b94b1dfa11f39
SHA51297f9435255b08a2a700d988d1b3e66509e14d5e84d652076b6efe1b40e25ca2d6fd449df1a39ffb354c955de6e497b59d80638b334118287be5ce31a62218c57