General

  • Target

    sussy vercelapp 1txt.zip

  • Size

    62.5MB

  • Sample

    250105-ykv7hawpbp

  • MD5

    ce4d9569d01468130da991fd3943b718

  • SHA1

    c397c3e0dd802a6dd87f243f1735eafef76048e2

  • SHA256

    319dacd3daf1eb80003f9cf78d1297e6a07c19e1e9382e8fbc070e9e6fd805e2

  • SHA512

    c8c127bc3389d09f776fd4da28dfb7b65b73a391bba1c058954771988949726f54c2c79d99ce611a8957b4ed15d6b7707d896815b5cf965617395c73d89a7778

  • SSDEEP

    1572864:Rdz+VBzlb5zcEnaOJ38wTvIq8Gn7IHYsSG:RhQrb5IOF8wTvVPUHpSG

Malware Config

Extracted

Family

quasar

Attributes
  • encryption_key

    1162A0E173FED8E7CF598896A547E279E681EE6F

  • reconnect_delay

    3000

Targets

    • Target

      sussy vercelapp 1txt.zip

    • Size

      62.5MB

    • MD5

      ce4d9569d01468130da991fd3943b718

    • SHA1

      c397c3e0dd802a6dd87f243f1735eafef76048e2

    • SHA256

      319dacd3daf1eb80003f9cf78d1297e6a07c19e1e9382e8fbc070e9e6fd805e2

    • SHA512

      c8c127bc3389d09f776fd4da28dfb7b65b73a391bba1c058954771988949726f54c2c79d99ce611a8957b4ed15d6b7707d896815b5cf965617395c73d89a7778

    • SSDEEP

      1572864:Rdz+VBzlb5zcEnaOJ38wTvIq8Gn7IHYsSG:RhQrb5IOF8wTvVPUHpSG

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Checks for common network interception software

      Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks