Overview

overview

10

Static

static

10

aa551c7de8...6a.exe

windows7_x64

10

aa551c7de8...6a.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294207s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    23/03/2022, 13:37

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General

  • Target
    aa551c7de85ef21b2ea8d377d79a5e6a.exe
  • Size 2.7MB
  • Sample220323-qwvfcabdaq
  • SHA256 0b84e664c8b592aa0220d52841629b2accb41f1f624720331000ab5f2f0ed628
  • MD5 SHA1 SHA512
Score
10/10
quasaroffice04spywaresuricatatrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.0

Botnet

  • Office04

C2

  • ms-insider.net:1604

Mutex

  • 811c1960-874e-401e-bbd2-0d8560af92ea

Attributes
  • encryption_key

    4795EB97A05AE5F4E669D4B7FFF6608D94FC9027

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    5000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar Payload 1 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)

    suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)

    suricata
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aa551c7de85ef21b2ea8d377d79a5e6a.exe
    "C:\Users\Admin\AppData\Local\Temp\aa551c7de85ef21b2ea8d377d79a5e6a.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1548

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1548-54-0x0000000001360000-0x0000000001620000-memory.dmp
        Download

        memory/1548-55-0x000000001AAD0000-0x000000001AAD2000-memory.dmp
        Download