Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
24-01-2024 03:31
Behavioral task
behavioral1
Sample
2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe
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Size
127KB
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MD5
3daae42d1a63b366a6756ac6b28b99c9
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SHA1
5cdd441f348254090c141373d27ab0257dbda95f
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SHA256
4061d2bdd102f07468d5b1162065e4a1431cd7df4fe7440b1633074ee9a3405a
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SHA512
7ff01f9dbe930678575f7f5b554d2801cc9e22a76e800f4d83bc4a70cc9eb2d7d0e7a1603e1a656e13d941518d23721a0b1c94a3913ea042705b7f1db5cd823c
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eT:AnBdOOtEvwDpj6zZ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2772-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000001224a-14.dat CryptoLocker_rule2 behavioral1/memory/2888-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2772-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2888-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2772-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a00000001224a-14.dat CryptoLocker_set1 behavioral1/memory/2888-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2772-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2888-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2772-1-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000a00000001224a-14.dat UPX behavioral1/memory/2888-18-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2772-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2888-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2888 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2772 2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe -
resource yara_rule behavioral1/memory/2772-1-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000a00000001224a-14.dat upx behavioral1/memory/2888-18-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2772-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2888-26-0x0000000000500000-0x000000000050F000-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 2772 wrote to memory of 2888 2772 2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe 28 PID 2772 wrote to memory of 2888 2772 2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe 28 PID 2772 wrote to memory of 2888 2772 2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe 28 PID 2772 wrote to memory of 2888 2772 2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-24_3daae42d1a63b366a6756ac6b28b99c9_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2772 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2888
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
127KB
MD50dcd69254625505867f4356bff920ce4
SHA1780561a22ad64c7e6001b7a82c3342169d6ec139
SHA25640e70532e7ac5b83bd643f7d12721fbe6679cc9e79cf5c9de86ff19d27b83d46
SHA5128bd2eda41c1c0e7ff2ff29de4e9657ea48407ad82bea820e908bf73a83e82b00d9cb5be1d2bbfda55977ce428723e0fde3369db5c60573fe6f0636661ad04fda