Overview

overview

10

Static

static

3

5b1365bd1c...35.exe

windows7-x64

10

5b1365bd1c...35.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e862112b0a3781dcf75eaf11b8b6ea7d.bin

  • Size

    4.3MB

  • Sample

    230525-ccn8bsgb8v

  • MD5

    3351763c12fd12f4468a7eb76156c5ff

  • SHA1

    c07d054d71159f800426c1a51681057730af45fa

  • SHA256

    1f3f243a8fbc3468bbdd7abdf0f2d1b91e8cf8a3cecb8db1bfbe5fa6288809bd

  • SHA512

    fbb7440b575079b378377f35de339badc3478e27d890c0ded0518e4c697e394f32c421a63dbc17e8c68bace76525ce59b4d7a95b5ed6b18e65fa321997a7434f

  • SSDEEP

    98304:8kvf8vBvqzTC4tHUASP/KlKgSCt4MbLDVJuMamOH8a8wKPkwO/Kj:/vkJvIQAc/gSGMMamBajyj

Score
10/10
quasaroffice04persistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

microsoftbackup.duckdns.org:47600

Mutex

b97303a2-a8f5-4170-91c1-56adceee5081

Attributes
  • encryption_key

    A31E078A7CC45D3676D5AE3FB460C3E365219397

  • install_name

    Client.exe

  • log_directory

    Log

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      5b1365bd1c3648fdfe1aa9699e1647b3967bf3824c0b03eb4e67ef4599840135.exe

    • Size

      4.4MB

    • MD5

      e862112b0a3781dcf75eaf11b8b6ea7d

    • SHA1

      725b9a18c2c6cdd616ad10d6f9e977753c7eb0e4

    • SHA256

      5b1365bd1c3648fdfe1aa9699e1647b3967bf3824c0b03eb4e67ef4599840135

    • SHA512

      6a5ebf286858e2a814fedf81fae111bd4468eaafe19ecc2a7eadf2d441b9584bab4ee4a3c5f83415d5cc31bbe11f7888e6dbe2a0a8a006affaefe463de3f535f

    • SSDEEP

      98304:+4uKDZOjVXFcG7BEcyZeW+gP/i6jepIA90sK6LovYr5K49ZQ:+4uKDeFT7BEcyZpDP/RERXKsog5BHQ

    Score
    10/10
    quasaroffice04persistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks