Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
22-05-2024 02:54
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe
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Size
41KB
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MD5
f661f11d2e594196448a9b654cd698ca
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SHA1
2d42bac5a34ec6baa8bfbb8014b2ee4485d60f69
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SHA256
016c7d054a8712a1f76c6c35667ae4848bc81409ee955ab4d7d9c15ac1cc1b68
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SHA512
8294f2f38d6c3e7940f5526accc126641dd22169cf24cd7eb742a22f02724024547e577f21a5f515adda4224d6f99280977f435b61cca525f57188d3f9f72f01
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9Ora:X6QFElP6n+gJQMOtEvwDpjBsYK6r0ra
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 3068 asih.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exepid process 844 2024-05-22_f661f11d2e594196448a9b654cd698ca_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
Processes:
2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exedescription pid process target process PID 844 wrote to memory of 3068 844 2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe asih.exe PID 844 wrote to memory of 3068 844 2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe asih.exe PID 844 wrote to memory of 3068 844 2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe asih.exe PID 844 wrote to memory of 3068 844 2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-22_f661f11d2e594196448a9b654cd698ca_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\asih.exeFilesize
41KB
MD51fa463591228235d43cef2d849f7fc57
SHA1eb0edc605f1fe4d0e26cffd1fb3fc90e3c470286
SHA256247fc7847371c3fd75ac50eef58bdb5bb7863561b7a60af28c0765e0d37c5eca
SHA512a84bceda4abed9e8dc87b00577451ecb509dc8d88c617d793fb079418ce3431d06ffd4fdfaaa878b3e6e3c83cdbfee9d2494a2a4df05f52f05758d5848198c70
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memory/844-0-0x00000000002C0000-0x00000000002C6000-memory.dmpFilesize
24KB
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memory/844-1-0x0000000000300000-0x0000000000306000-memory.dmpFilesize
24KB
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memory/844-8-0x00000000002C0000-0x00000000002C6000-memory.dmpFilesize
24KB
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memory/3068-15-0x0000000000210000-0x0000000000216000-memory.dmpFilesize
24KB
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memory/3068-22-0x00000000001D0000-0x00000000001D6000-memory.dmpFilesize
24KB