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
12/06/2024, 17:12
Behavioral task
behavioral1
Sample
2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe
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Size
62KB
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MD5
90f6766a46b3df081a75420ddae5ee49
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SHA1
7ca1739d7d50dfd53cf9d4b23fa79f5e6a5710f3
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SHA256
25aea726f37bc9d0f7faf4d9ff77b8a5a245f4ddbc9e067d2c9e51b1a10f09ed
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SHA512
3c4fd1213aac4b83aad7c6e34c0a10e34834057d8b865c522296a423aa098ff14e38d210e8ece69abeeb48477d0fddeae28ea66aca38916615254f0f166f5b02
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SSDEEP
768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zW:0j+soPSMOtEvwDpjwizbR9XwzW
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00080000000232a4-13.dat CryptoLocker_rule2 behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x00080000000232a4-13.dat CryptoLocker_set1 behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral2/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x00080000000232a4-13.dat UPX behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2400-26-0x0000000000500000-0x0000000000510000-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2400 misid.exe -
resource yara_rule behavioral2/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x00080000000232a4-13.dat upx behavioral2/memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2400-26-0x0000000000500000-0x0000000000510000-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 944 wrote to memory of 2400 944 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe 82 PID 944 wrote to memory of 2400 944 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe 82 PID 944 wrote to memory of 2400 944 2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2400
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD55e1e9f81314314e24a6b385ce639fb08
SHA1968895b88e7f9e3ebb05ea831a63671bfd138824
SHA256788ec95743f58966f7dd61b8df1614cfe818b824d57ad6029f2f640031b4b3ea
SHA512653201612e5fc83abba6e36b85b6dc5e17951451a5ada07aaf2ab7723d9fd1dabb89ab6056390d093bf679e6454b64d2f5ecb94deee83eeffc287f9ad8e5f89f