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Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
30/04/2024, 19:23
Behavioral task
behavioral1
Sample
2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe
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Size
65KB
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MD5
2ca11d635f336f4867e155023096a05b
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SHA1
549c4ee6caf2c012894e14dc3f6f0d28b46eda5f
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SHA256
a120b2b4757a6659cfd17d9eae9dced911ab1fc92a7f94a72e48adbe81ba0582
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SHA512
ee934074ff2761816d308ddd6fae7d82ad43986376fa2048bf7fe6bc8d512743953e5ae51738b2960f3ce61e8e422f200f990ac66772c0ff82d0aa786ea795c6
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDy6:1nK6a+qdOOtEvwDpj1
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001228a-11.dat CryptoLocker_rule2 behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1836-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001228a-11.dat CryptoLocker_set1 behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1836-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000d00000001228a-11.dat UPX behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1836-26-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1836 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1180 2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe -
resource yara_rule behavioral1/memory/1180-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000d00000001228a-11.dat upx behavioral1/memory/1180-16-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1836-26-0x0000000000500000-0x000000000050F311-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 1180 wrote to memory of 1836 1180 2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe 28 PID 1180 wrote to memory of 1836 1180 2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe 28 PID 1180 wrote to memory of 1836 1180 2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe 28 PID 1180 wrote to memory of 1836 1180 2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1180 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1836
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD5508591193aa2246902dafc1c4a2f0e5d
SHA1675204b510a5b49d17abc99b11dc38e96e3fcc76
SHA2565aed5cc1744db6a97c79f37e8d5b75dbaaa190d8e13e67ef078c017a2d8b5c09
SHA512674c69388448c7be4c75e28150ffeea26363283e7c4c1f6eb19c6af9fa9d8d2b9b4258bda741869f546e12bb69f3c1d33b1d6bc49533564cb6cd77308af86ba2