Analysis
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max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
16/06/2024, 16:31
Behavioral task
behavioral1
Sample
2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe
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Size
94KB
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MD5
b6b9a4ff8505614375180c4197bdf12a
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SHA1
fdae8820ba86624f6b5779b532cec74db65999af
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SHA256
b82654957449874b70ce7def777f4a58482c0505688c59325d8506d97c5fa861
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SHA512
869950b1e2fb3c25f47e3dcda7f5eedd67c067831405886d884ef6da9f5b80df9a48e5ca3499740f2cc6a70b455631e144cac4565fb6a61a746d8c5bd95f19f6
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kb:zCsanOtEvwDpjB4
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000022f51-13.dat CryptoLocker_rule2 behavioral2/memory/1872-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2300-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1872-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0008000000022f51-13.dat CryptoLocker_set1 behavioral2/memory/1872-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2300-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/1872-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x0008000000022f51-13.dat UPX behavioral2/memory/1872-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2300-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/1872-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1872 misid.exe -
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x0008000000022f51-13.dat upx behavioral2/memory/1872-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2300-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/1872-27-0x0000000000500000-0x0000000000510000-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 3 IoCs
description pid Process procid_target PID 2300 wrote to memory of 1872 2300 2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe 81 PID 2300 wrote to memory of 1872 2300 2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe 81 PID 2300 wrote to memory of 1872 2300 2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-16_b6b9a4ff8505614375180c4197bdf12a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1872
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
94KB
MD5be932e83402ad5648c60c73e130b1c0b
SHA174d2abc662b692ae5a237c7a3adc677b94fe956d
SHA256bb5cd42a6a55fd605a2be63707d6d054c209ff045d62d692f64a937e8ed94990
SHA5128d4a82ecb749db7563f61bb7d547d9ac659d7e54b0be9c6ffc73442d56c8af0fd72c67d1c0a7719a8baecec80b7fbfda1c4bfdb54e76a3a8c5d256de76a41e0f