Overview

overview

10

Static

static

1

Update.js

windows11-21h2-x64

10

Sharing

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General

  • Target
    Update.js
  • Size 439KB
  • Sample240425-s2944acb68
  • SHA256 8fe424869272394512941904c4b1ba7039ac2a514acb9861e613f5e85222d9a7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
bitratpersistencetrojanupx

Malware Config

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://77.221.151.31/a/z.png

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://77.221.151.31/a/s.png

Extracted

Family

  • bitrat

Version

  • 1.38

C2

  • 77.221.151.31:4444

Attributes
  • communication_password

    7b13ff385b95cf25d53088d6b7c5d890

  • tor_process

    tor

Targets

    • Target
      Update.js
    • Size 439KB
    • SHA256 8fe424869272394512941904c4b1ba7039ac2a514acb9861e613f5e85222d9a7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    bitratpersistencetrojanupx

    • BitRAT

      BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

      trojanbitrat

    • Blocklisted process makes network request

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks