Analysis
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max time kernel
151s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05-04-2024 15:38
Behavioral task
behavioral1
Sample
2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe
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Size
117KB
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MD5
6ace1909b66e50b571440485fd8ded79
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SHA1
eaee3e4b9321b413459da0be45d787b63e744f49
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SHA256
cf488cd3731d05806b7334b2e6f8b57d947eab17d439be0c0be58b9e9f506a0d
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SHA512
2a0666edfba678010326ed32301fdd5f99d68e996d7561230dbc7ad3c128baeb942980e29f9b12291e454d0e8e985c26b65d44b7e3a61ae6d89188f6ac61bb2c
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp010:z6a+CdOOtEvwDpjczi
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2432-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012241-11.dat CryptoLocker_rule2 behavioral1/memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2432-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012241-11.dat CryptoLocker_set1 behavioral1/memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2432-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012241-11.dat UPX behavioral1/memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2152 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2432 2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe -
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2432-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012241-11.dat upx behavioral1/memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2152-26-0x0000000000500000-0x0000000000510000-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 2432 wrote to memory of 2152 2432 2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe 28 PID 2432 wrote to memory of 2152 2432 2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe 28 PID 2432 wrote to memory of 2152 2432 2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe 28 PID 2432 wrote to memory of 2152 2432 2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-05_6ace1909b66e50b571440485fd8ded79_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2152
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
118KB
MD598c7481c7432c2160514b56c8e6d0750
SHA11659466c3bed09708d44687bed57fb9814c2bf1a
SHA25623f5f99911128011fd57475fc87da7130c0e95bbd33ea06130436cafdaa00ea3
SHA512768b3def48230d5a5a685f2857f4c8142024c4d428462b0d5adcec8b7afd7932c9bc3f8e620646e4bfefa7de23ab99b2ba255fab1e83aaaa09a710c4f41b0653