Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23-05-2024 22:32
Behavioral task
behavioral1
Sample
2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe
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Size
40KB
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MD5
9411346b2c125f5cce2521a180a78cf8
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SHA1
f1a527ff660a2f666c7bcb948f73800d9e998e42
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SHA256
614cdc88b72c234ea9990850cf438f8c10d1f9b6fb903ee88987d56972e272fa
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SHA512
e935fcddfdad6ab174148597b8b4b06685fd9dd5ccdb327e0090526b3bf5a10fdb1b5483b558e6fcf432d994a719af0d4ad75c9cbdb249634f2a895b8693e68a
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYljt:qDdFJy3QMOtEvwDpjjWMl7T6Z
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012671-11.dat CryptoLocker_rule2 behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012671-11.dat CryptoLocker_set1 behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012671-11.dat UPX behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2828 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3000 2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe -
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012671-11.dat upx behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-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 3000 wrote to memory of 2828 3000 2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe 28 PID 3000 wrote to memory of 2828 3000 2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe 28 PID 3000 wrote to memory of 2828 3000 2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe 28 PID 3000 wrote to memory of 2828 3000 2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_9411346b2c125f5cce2521a180a78cf8_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3000 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2828
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD501fffef0b42ec141b0c5e352301617d7
SHA1fcfe08f1567ef8fccc1c26aa85a71a327ec134a5
SHA256acd276f2e9d44fd664d859568e25b9990de2d66aa28d7fb41ff876b2974e953b
SHA5125f3eb1e4899ea03dd99432e0fcbb29508f80830c6844dcc388abf8d553edaa62570d6afe1bd56eaeca168a8b880a16aa76f5a01ec09357c0a71666fc2cf9d7b3