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Analysis
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max time kernel
146s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
09/03/2024, 09:31
Behavioral task
behavioral1
Sample
2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe
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Size
59KB
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MD5
6fbb34d0f0b3c071e8a5373962faa10f
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SHA1
5186c9bc68d1e79cc9125628de3ce4ed872c04d4
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SHA256
48fe476047a4ac10bc01ce08fa7ace94664bbe22e4b45fe044c42d5721589387
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SHA512
8956bc908a96a45d40d46a23f8a054c7945e327b1e05716e8f2de35a59d3cc3ebc2859c016e5304488b67d91a7014faeeef433f825c1bac8d4f41cc801297104
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHNMO:1nK6a+qdOOtEvwDpj0
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1136-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1136-6-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000f00000000f680-12.dat CryptoLocker_rule2 behavioral1/memory/2352-24-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1136-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1136-6-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000f00000000f680-12.dat CryptoLocker_set1 behavioral1/memory/2352-24-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1136-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1136-6-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000f00000000f680-12.dat UPX behavioral1/memory/2352-24-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2352 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1136 2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe -
resource yara_rule behavioral1/memory/1136-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1136-6-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000f00000000f680-12.dat upx behavioral1/memory/2352-24-0x0000000000500000-0x000000000050F311-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 1136 wrote to memory of 2352 1136 2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe 30 PID 1136 wrote to memory of 2352 1136 2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe 30 PID 1136 wrote to memory of 2352 1136 2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe 30 PID 1136 wrote to memory of 2352 1136 2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-09_6fbb34d0f0b3c071e8a5373962faa10f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1136 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2352
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD5ab2820936d47a95cb8ac6be08cd7c31b
SHA1855be47db7c8561e9d9722c4a64863dcfe39e217
SHA2562b48ec613d81dc8fe76ee8ae33a69d3f60f0f87207be4db34cf9e5541a0f59cf
SHA51267614b9cb7eb3cf0cdb3d8cb4fd7e057f8a5b7a713f2f64678b3503449e949c6abb94d6024dbcd319789d4ef7092310114605ad92740cc6581cc15be0c377862