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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
26/03/2024, 04:02
Behavioral task
behavioral1
Sample
2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe
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Size
61KB
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MD5
dfa1e903dee9e210869a60ca70b2eaeb
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SHA1
5e0436c4c91900c7425da5da0e6716387ca7e228
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SHA256
4dc404f515009bb71a872b5af70b3216c61a004a8f381eeed9f2f1e858d39a82
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SHA512
4d3780d7a2766c122c63e1a8ca5bbe59f5ad32046e721d65a25b1d980ecb5705b009c0817d0d676d58bc9a46201737b29ca7d5d3b5af00fe299a9c3f85a8c6ee
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SSDEEP
768:T6LsoEEeegiZPvEhHSG+gkum/kLyMro2GtOOtEvwDpjhXMLamkc8J59l:T6QFElP6n+gxmddpMOtEvwDpjwa39l
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000122a8-11.dat CryptoLocker_rule2 behavioral1/memory/944-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/944-13-0x0000000000910000-0x0000000000920000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2228-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d0000000122a8-11.dat CryptoLocker_set1 behavioral1/memory/944-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/944-13-0x0000000000910000-0x0000000000920000-memory.dmp CryptoLocker_set1 behavioral1/memory/2228-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d0000000122a8-11.dat UPX behavioral1/memory/944-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/944-13-0x0000000000910000-0x0000000000920000-memory.dmp UPX behavioral1/memory/2228-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2228 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 944 2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe -
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d0000000122a8-11.dat upx behavioral1/memory/944-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/944-13-0x0000000000910000-0x0000000000920000-memory.dmp upx behavioral1/memory/2228-26-0x0000000000500000-0x0000000000510000-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 4 IoCs
description pid Process procid_target PID 944 wrote to memory of 2228 944 2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe 28 PID 944 wrote to memory of 2228 944 2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe 28 PID 944 wrote to memory of 2228 944 2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe 28 PID 944 wrote to memory of 2228 944 2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-26_dfa1e903dee9e210869a60ca70b2eaeb_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2228
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD5b628f41eebba3b6eb3b753e18e7a75a3
SHA1e717e9f6388f6a90b6f20216081fe0b6721c8ec8
SHA25661b13cf8cb109180d3bc1e73d2c155e3e8ddbb2dc363464bbd0b4f6f0c8eaff6
SHA512aeef63e8a1a622438de55e9021374e38055f198bedb4aa6ce35af6c07e9d1e2842c4fe91b0f0d38fbadef68cf664b5279bae79d878d32e33c0df18dd3815429c