Analysis
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max time kernel
150s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 05:56
Behavioral task
behavioral1
Sample
2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe
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Size
39KB
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MD5
82bf3bf2f2fd869a40c4bb3813083caa
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SHA1
f8ff0f981f51f6fda40fa67ac4e6e116185c3d22
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SHA256
b82315e0bef4e6b7f74d8882736213b966e1c79740b13e9a2aead6ceb5d521d2
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SHA512
4092845f4737d5435352f3965d46a5a0f9e508b078641bdf62ce92259973d5196e363599302da1bdaa619425c6e2345f3179ba83b7cd0ff35fc15bfc302ea7f3
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBJX:qDdFJy3QMOtEvwDpjjWMl7Td/
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1440-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00090000000143d1-11.dat CryptoLocker_rule2 behavioral1/memory/1440-13-0x0000000002380000-0x0000000002390000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2612-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1440-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2612-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1440-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x00090000000143d1-11.dat CryptoLocker_set1 behavioral1/memory/1440-13-0x0000000002380000-0x0000000002390000-memory.dmp CryptoLocker_set1 behavioral1/memory/2612-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1440-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2612-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1440-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00090000000143d1-11.dat UPX behavioral1/memory/2612-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1440-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2612-28-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2612 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1440 2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe -
resource yara_rule behavioral1/memory/1440-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x00090000000143d1-11.dat upx behavioral1/memory/2612-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1440-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2612-28-0x0000000000500000-0x0000000000510000-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 1440 wrote to memory of 2612 1440 2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe 28 PID 1440 wrote to memory of 2612 1440 2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe 28 PID 1440 wrote to memory of 2612 1440 2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe 28 PID 1440 wrote to memory of 2612 1440 2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-22_82bf3bf2f2fd869a40c4bb3813083caa_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1440 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2612
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD564c068cf273b07662326c0dbbaf0a327
SHA170006946e240e007d4bfb11a5b193a360ea648a6
SHA256d92aa0bdffeb74ec8c06e055a1502655ca68a723b55f2d6fed65a152f494ac54
SHA512fc82a2590e10a4d85b801b3a619c3797c17d93aab3b111f7c5765408d38a427515bb5bfa15525d89a507e8885236856e6ca7b5dff5fbfaecff929da003827a7d