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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14/03/2024, 15:38
Behavioral task
behavioral1
Sample
2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe
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Size
86KB
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MD5
654946c5af63a955cbb4836fb4b01e90
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SHA1
760bc71622ea30d6437dd7f0c1d4bf56bfb7b085
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SHA256
45549e88ede5114340b538d6f46817a86d1ff99ef968ee36129c411d80c15477
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SHA512
cead2aafaa1d90db81b76b85ad2579b65063416ecf64bcdc9d69f8ff2cb4da5c6ece0115617257831996d749442a54e67e617608ec3c617aa0e7d9a0805779cf
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SSDEEP
768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIgj6J:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgi
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012255-15.dat CryptoLocker_rule2 behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012255-15.dat CryptoLocker_set1 behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000a000000012255-15.dat UPX behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2596 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1668 2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe -
resource yara_rule behavioral1/memory/1668-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1668-14-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000a000000012255-15.dat upx behavioral1/memory/2596-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2596-26-0x0000000000500000-0x000000000050F000-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 1668 wrote to memory of 2596 1668 2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe 28 PID 1668 wrote to memory of 2596 1668 2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe 28 PID 1668 wrote to memory of 2596 1668 2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe 28 PID 1668 wrote to memory of 2596 1668 2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-14_654946c5af63a955cbb4836fb4b01e90_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1668 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2596
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
86KB
MD5dbad51db5bbecd3349239559d933db23
SHA1d1cc54d67e95adec68878f5d268526c3bd485757
SHA256d82336b71e53e6838f26e6b45f8d5ef6fcfafbf05341f278409404a3c7a54829
SHA512bb5ec08d453448ae50328b288e7ddc99537551f853498354eaf3771c92a46b34ba2df8e4a366682b53f41874d211c11c50445934d43cd39f704585536bb1467c