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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
03/06/2024, 12:25
Behavioral task
behavioral1
Sample
2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe
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Size
54KB
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MD5
1aa7bd2470a31a521b37e22e93788acd
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SHA1
4d9cf152b4963dedd0fb2d3a47ceece82247d1c1
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SHA256
762ea74dff67dfa50870e41fca55a4d88316725f3b73d3106e5f2d3122fd61b4
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SHA512
e405e0a39c1b168dd464f0d46a180371a800f8ddda1f90e7d505a5bf97972daef9905aa68255334139798db06efc428cdc520e23bb2dd5cc251c835d1e222ee8
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkgdWz:z6QFElP6n+gKmddpMOtEvwDpj31ikgdQ
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001228a-11.dat CryptoLocker_rule2 behavioral1/memory/3000-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001228a-11.dat CryptoLocker_set1 behavioral1/memory/3000-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c00000001228a-11.dat UPX behavioral1/memory/3000-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2556 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3000 2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe -
resource yara_rule behavioral1/memory/3000-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c00000001228a-11.dat upx behavioral1/memory/3000-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2556-25-0x0000000000500000-0x0000000000510000-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 2556 3000 2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe 28 PID 3000 wrote to memory of 2556 3000 2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe 28 PID 3000 wrote to memory of 2556 3000 2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe 28 PID 3000 wrote to memory of 2556 3000 2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_1aa7bd2470a31a521b37e22e93788acd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1aa7bd2470a31a521b37e22e93788acd_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:2556
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD52cc3a64f0c807f1e952cebb534cde807
SHA160e73584940d26023835d5b0c69c0ce423735381
SHA256aaa044427155fe966d75e260fb2f70818f5159c1505e4a7358b30d151509a079
SHA512d719d30225bd1f657baba2f545a76e3f985d93218a89d23d20038354f3692e21cacde5975477712bd180df20295ab56e08aae49a4ef11b8998f109bdb42f7c37