Questions tagged [malware-analysis]

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Malware sinkhole evasion techniques

I have read into malware sink holing, as a way to disrupt botnets. There are also approaches to make this more difficult, for example using a Domain Name Generator algorithm which is what the ...
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Hex editing an IP address of a different length [migrated]

I am performing some Windows malware research on a rogue AV software called SpySheriff (password: infected). I want to edit the IP address within the PE (.exe) file to change it to my honeypot IP ...
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Malware binaries for the SpySheriff scareware

When I first became interested in malware reverse engineering years ago, the first malicious program I encountered was a scareware called SpySheriff. It had a wide internet presence, as it spread ...
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Has malware detected mitmproxy and similar tools used to intercept and analyze malicious traffic?

When trying to analyze malware, have there been cases where malware detected the use of mitmproxy and ceased operation? If that has happened, would it be a good idea to be constantly using a proxy as ...
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Opened compromised Excel file - am I safe?

Long story short, got duped into opening an XLSM in Excel, with macros being enabled. Realised instantly. Digged into the Excel structure, found the following (extremely obfuscated) payload: =CALL(&...
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How to store malware for analysis?

I am planning on analysing some malware samples dynamically using a sandbox tool and a target Windows VM. The host (physical machine) runs Ubuntu and in it are the sandbox and target VM. So far I only ...
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What is the difference between malware signatures and malware artifacts?

I am trying to analyse some malware samples but I am trying to understand the differen between malware signatures and malware artifacts. As far as I understand (and from what I've understood from this ...
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Malware dropper uses "^" character in syntax of cmd.exe before calling mshta.exe to download file?

I found a malicious Excel file that was using an embedded HTA program as its dropper to download a powershell program from a malicious IP. The dropper was on a hidden sheet in the file. After ...
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OCSP hosts. How to tell Malicious OCSP hosts apart

Learning abit about allowed OCSP hosts on Windows 10: I've picked up OCSP requests carried out by CryptSvc pointing towards an OCSP server in Japan. Referring to Microsoft's Win10 Non-enterprise ...
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What does it mean to find a Imphash match?

I have Import Hash (Imphash) matches for some executables and dlls in my environment like teams update.exe, outlook.exe and other microsoft provided dlls apart from non-microsoft dlls too. When I take ...
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Security of Third Party Plugins in Thunderbird

In Thunderbird (a popular open source email client), there is an extension store similar to Mozilla Firefox which adds further functionality to the client. Mozilla has an article detailing the ...
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Pixel File Size in STAMINA [closed]

Last year Intel released a white paper on a joint research effort with Microsoft concerning the possibility to perform malware analysis by converting a file to an image and then applying a deep neural ...
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