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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
15/03/2024, 13:42
Behavioral task
behavioral1
Sample
2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe
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Size
82KB
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MD5
672cbd9ad71ad85c9dcce93e3de93766
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SHA1
c1651030b2776893a84faeec62c56e20a0a58f53
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SHA256
ced6ec3fd9c9428cfbcf6aeacfe4727438900ff9118b3b560bfe2f8668903ec1
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SHA512
2045c64adee57086f36be1a129b41fc66bdedea2baefcbfc493f1c403df9ca9c904aeb20032194642c6675e68b77fffdf7472b10ab71c62859f86aab2254ed13
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7G3:T6a+rdOOtEvwDpjNK
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012330-11.dat CryptoLocker_rule2 behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012330-11.dat CryptoLocker_set1 behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012330-11.dat UPX behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2528 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3056 2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe -
resource yara_rule behavioral1/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012330-11.dat upx behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2528-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2528-27-0x0000000000500000-0x0000000000510000-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 3056 wrote to memory of 2528 3056 2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe 28 PID 3056 wrote to memory of 2528 3056 2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe 28 PID 3056 wrote to memory of 2528 3056 2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe 28 PID 3056 wrote to memory of 2528 3056 2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-15_672cbd9ad71ad85c9dcce93e3de93766_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2528
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
82KB
MD5c8e4e21839afbefd93543f2cd532cf57
SHA1e8504c4d2ec4e593555fd290ec3ecc5cdc02d4aa
SHA2568bfe3493061f1970e8203e3a0a099da850efff8c615099fe21ad693a38015deb
SHA512f2e7b056017fdaf1c818ec19d6f6f54f31a78592aa2b44c6c338209cc15b0d2dee2f5edf9a411e81b6561baa0c62467289b60cc5f1b271e1c3b8628c12e0ab6f