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Electronic Transactions Development Agency
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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: SparrowDoor

Description(ESET) The connections could be either through a proxy or not, and they connect to the C&C server over port 443 (HTTPS). So, the communication should be encrypted using TLS. During the first attempt to contact the C&C server, SparrowDoor checks whether a connection can be established without using a proxy, and if it can’t, then the data is sent through a proxy. All outgoing data is encrypted using the XOR key [email protected]#mi and all incoming data is decrypted using the XOR key h*^4hFa. The data has a structure that starts with a Command ID, followed by the length of the ensuing encrypted data, followed by the encrypted data.

Last change to this tool card: 28 December 2021

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All groups using tool SparrowDoor


APT groups


1 group listed (1 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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