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Threat Group Cards: A Threat Actor Encyclopedia

Permanent link Tool: NetFlash

Description(ESET) a .NET application that dropped an installer for Adobe Flash v32 in %TEMP%\adobe.exe, and NetFlash (a .NET downloader) in %TEMP%\winhost.exe.

According to their compilation timestamps, the malware samples were compiled at the end of August 2019 and at the beginning on September 2019, right before being uploaded to the watering hole’s C&C server.

NetFlash downloads its second stage malware from a hardcoded URL and establishes persistence for this new backdoor using a Windows scheduled task. Figure 5 shows the NetFlash function that downloads the second stage malware, named PyFlash.
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Last change to this tool card: 24 April 2021

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All groups using tool NetFlash


APT groups

XTurla, Waterbug, Venomous BearRussia1996-May 2022 HOT 

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

Digital Service Security Center
Electronic Transactions Development Agency

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