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Analysis
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max time kernel
135s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
10/06/2024, 11:49
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
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Size
47KB
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MD5
f191ad552423b6cb66793ff22dd37bef
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SHA1
ecf6aa74d33dc507a5d347e246268dffd11b0e6f
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SHA256
6bb01522743924f7b11a5592a4938945eaa3201625e1255bd6f01cefceeabc31
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SHA512
497b19d498706042dba396db7b0b901351a73e62fe3533ba89f235a724eee04070e69b74fb57c1311502769afd94d436800e6da574e25d2b607b55e51edcce0f
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SSDEEP
768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUv:79mqyNhQMOtEvwDpjBzckqS+
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1556-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000016c90-11.dat CryptoLocker_rule2 behavioral1/memory/1556-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2820-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1556-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000016c90-11.dat CryptoLocker_set1 behavioral1/memory/1556-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2820-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2820 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1556 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe -
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 1556 wrote to memory of 2820 1556 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 28 PID 1556 wrote to memory of 2820 1556 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 28 PID 1556 wrote to memory of 2820 1556 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 28 PID 1556 wrote to memory of 2820 1556 2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2820
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD502e81b68675d7b917eff805569960d31
SHA1925abe87fd7546a3d28e598ce156dcd0c00922b1
SHA256ce7bcc5be88aa7d535b8ed12c326e277f948d3a127caef7f306887122d76a7d4
SHA512510cd9028abedf3c534fcfd119b75211cbef746cf8c11699dc81e1d2e8447b3fd1b5f3fda046361be32a41611aed65a0af1f9b9e07a94bc4f513154883d9f0d4