Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
12-02-2024 04:37
Behavioral task
behavioral1
Sample
2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe
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Size
67KB
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MD5
5bb96b1b1c8d29c995dd94e1753a07f2
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SHA1
b2e444131b5baab1e5a26176b6ffa6a2568d1375
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SHA256
c695885c00ab96157f76e8b4a4a4a36cf03e0e1e53e93e75d431c2e0422fb749
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SHA512
5f7b699e4dfd3abadcbdddc2c92a79f9ecbeb065a8a78b5c427eaf4abd9e365ee71175c090f95d3df694e041382aabcfdc9db52cc6b4d748c3727e0da2935728
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeBt:z6a+CdOOtEvwDpjQ/
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2404-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000015d70-11.dat CryptoLocker_rule2 behavioral1/memory/2404-13-0x0000000001C80000-0x0000000001C90000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2404-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000015d70-11.dat CryptoLocker_set1 behavioral1/memory/2404-13-0x0000000001C80000-0x0000000001C90000-memory.dmp CryptoLocker_set1 behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2404-8-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000015d70-11.dat UPX behavioral1/memory/2404-13-0x0000000001C80000-0x0000000001C90000-memory.dmp UPX behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3016 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2404 2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe -
resource yara_rule behavioral1/memory/2404-8-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000015d70-11.dat upx behavioral1/memory/2404-13-0x0000000001C80000-0x0000000001C90000-memory.dmp upx behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3016-27-0x0000000000500000-0x0000000000510000-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 2404 wrote to memory of 3016 2404 2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe 28 PID 2404 wrote to memory of 3016 2404 2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe 28 PID 2404 wrote to memory of 3016 2404 2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe 28 PID 2404 wrote to memory of 3016 2404 2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3016
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD595207419ec32478d51622496bbc5c3cc
SHA1f51e0780f187648673618339bd49a768964ce259
SHA25671773b8583245e006588c3dc4d13de64bbb0c023b55afd233d234d681251087c
SHA512437fb5b436912155cdba071e049dc2011963fb9402a8c2a50ac712c8303bbdd68eb8b5810332465f053356fd36a9a911cd1d989d421096408ca6792169472cb5