Analysis
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max time kernel
10s -
max time network
8s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
28-05-2022 09:40
General
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Target
Petya.exe
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Size
266KB
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MD5
505e38e344f45ea9ff9c9b560d851c1e
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SHA1
c5e934de62fbbad105eef0ec1b533ca00aba05b0
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SHA256
4d8e5e85b3d49509eab8e7ffebad940147ed950fcddab60e8a13409dfc2b8fc5
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SHA512
6dcc186c7e71fbd104eb0c29777525e59c43aaa6a6e6a439ae2805e1f8d1589c200ce7b5cb622519b9ad8f4480615e8e980132b617e944c3017462a411898689
Malware Config
Signatures
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Modifies system executable filetype association 2 TTPs 1 IoCs
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Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Executes dropped EXE 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in Windows directory 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Petya.exe"C:\Users\Admin\AppData\Local\Temp\Petya.exe"1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\3582-490\Petya.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\Petya.exe"2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
225KB
MD5af2379cc4d607a45ac44d62135fb7015
SHA139b6d40906c7f7f080e6befa93324dddadcbd9fa
SHA25626b4699a7b9eeb16e76305d843d4ab05e94d43f3201436927e13b3ebafa90739
SHA51269899c47d0b15f92980f79517384e83373242e045ca696c6e8f930ff6454219bf609e0d84c2f91d25dfd5ef3c28c9e099c4a3a918206e957be806a1c2e0d3e99
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Filesize
252KB
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Filesize
72KB