PowerSpritz

Description

(Proofpoint) PowerSpritz is a Windows executable that hides both its legitimate payload and malicious PowerShell command using a non-standard implementation of the already rarely used Spritz encryption algorithm.

PowerSpritz decrypts a legitimate Skype or Telegram installer using a custom Spritz implementation with the key “Znxkai@if8qa9w9489”. PowerSpritz then writes the legitimate installer to disk in the directory returned by GetTempPathA either as a hardcoded filename such as SkypeSetup.exe or, in some versions, as the filename returned by GetTempFileNameA. The installer is then executed to trick the potential victim into thinking they downloaded a legitimate, working application installer or update. Finally, Spritz uses the same key to decrypt a PowerShell command that downloads the first stage of PowerRatankba.

Names

Name
PowerSpritz

Category

Malware

Type

  • Dropper
  • Downloader

Information

Malpedia

Other Information

Uuid

f28aaa58-5e8d-469b-82db-dbf7fb246947

Last Card Change

2020-04-23