General

  • Target
    file.zip
  • Size 3.4MB
  • Sample261106-j2bf4avz4r
  • SHA256 ad903061de2fc967bd0251cd39266a8503f54082345621f049dbfaf245d4060c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.3.0.0

Botnet
  • portugal

C2
  • 51.79.155.135:4782

Mutex
  • QSR_MUTEX_VZmxYUraFFkGp0YvYr

Attributes
  • encryption_key

    0Td7BNm4smJEkGTNSBNz

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      documento-2026.exe
    • Size 3.4MB
    • SHA256 0c0142ab91917f30122126a202944b867a70cdffd78dfb22639ff19e92ea3d8b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Target
      $PLUGINSDIR/InstallOptions.dll
    • Size 15KB
    • SHA256 efb07b38b205f4dcde166887df43c089cfecff627099922cc0c88fce27075063
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      $PLUGINSDIR/LangDLL.dll
    • Size 4KB
    • SHA256 e80cfa37169aecfee7d91508d1025706294d47b2950debf2c31e6ba52f3b8cf9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      axHPReader.ocx
    • Size 381KB
    • SHA256 0c97849e53c43a0d61086452155512892cf8e3b307e311f9066f8fae2ca7e9e8
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      hpreader.exe
    • Size 6.1MB
    • SHA256 08c7fb6067acc8ac207d28ab616c9ea5bc0d394956455d6a3eecb73f8010f7a2
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      npHPReader.dll
    • Size 24KB
    • SHA256 32ebc11a10d93936fafbfc5ce255b2f5a211e806cc8b33a07d0f433c80cfca30
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      msimg32.dll
    • Size 7KB
    • SHA256 ed692098cd358bc6ca81b210dca5916ab17eb1b7abcc540d9fa725b8d1630bbf
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    • Target
      version.dll
    • Size 79KB
    • SHA256 c15014ac221fdaccddb9f105ffdf7341fc4545eda3422f2cd4d01639d74e5942
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

MITRE ATT&CK Enterprise v16

Tasks