Overview

overview

10

Static

static

10

Vanta-Fn.exe

windows7-x64

10

Vanta-Fn.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    22-03-2023 16:03

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    Vanta-Fn.exe

  • Size

    3.1MB

  • MD5

    d41852e4e97ade129efe94cf773d10ff

  • SHA1

    f999477106a8ea6506905abe6effe054c8e3db3b

  • SHA256

    996afa4a4194a60b56825e8589b8cd028cb593f6a619370c15ec04fa2659e500

  • SHA512

    4862f158153d25647901195e6f294bdb1c13ad8ffcaebe000f702f5c1fa49e631b04830baa27e172acf58b1bacbbefb3f99bf6a5d44d90ec21e3b8d9a20ee8cf

  • SSDEEP

    49152:iv4hBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkaGRepECs+k/iLkoGdQTHHB72eh2NT:ivqt2d5aKCuVPzlEmVQ0wvwfGReNg

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

connorb839-25244.portmap.host:25244

Mutex

f2898513-d005-492e-9b72-aa39b77b1a27

Attributes
  • encryption_key

    8CC861C5A1B05D3DCE95956911FE36B8D1042D36

  • install_name

    Epic web repair tool.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Epic web repair

  • subdirectory

    Epicwebservicesltd

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vanta-Fn.exe
    "C:\Users\Admin\AppData\Local\Temp\Vanta-Fn.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Epic web repair" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:1368
    • C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe
      "C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:584
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Epic web repair" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe
    Filesize

    3.1MB

    MD5

    d41852e4e97ade129efe94cf773d10ff

    SHA1

    f999477106a8ea6506905abe6effe054c8e3db3b

    SHA256

    996afa4a4194a60b56825e8589b8cd028cb593f6a619370c15ec04fa2659e500

    SHA512

    4862f158153d25647901195e6f294bdb1c13ad8ffcaebe000f702f5c1fa49e631b04830baa27e172acf58b1bacbbefb3f99bf6a5d44d90ec21e3b8d9a20ee8cf

    Download Submit
  • C:\Users\Admin\AppData\Roaming\Epicwebservicesltd\Epic web repair tool.exe
    Filesize

    3.1MB

    MD5

    d41852e4e97ade129efe94cf773d10ff

    SHA1

    f999477106a8ea6506905abe6effe054c8e3db3b

    SHA256

    996afa4a4194a60b56825e8589b8cd028cb593f6a619370c15ec04fa2659e500

    SHA512

    4862f158153d25647901195e6f294bdb1c13ad8ffcaebe000f702f5c1fa49e631b04830baa27e172acf58b1bacbbefb3f99bf6a5d44d90ec21e3b8d9a20ee8cf

    Download Submit
  • memory/584-61-0x0000000000810000-0x0000000000B34000-memory.dmp
    Filesize

    3.1MB

    Download
  • memory/584-62-0x000000001B1F0000-0x000000001B270000-memory.dmp
    Filesize

    512KB

    Download
  • memory/584-63-0x000000001B1F0000-0x000000001B270000-memory.dmp
    Filesize

    512KB

    Download
  • memory/1744-54-0x0000000000E60000-0x0000000001184000-memory.dmp
    Filesize

    3.1MB

    Download
  • memory/1744-55-0x000000001B340000-0x000000001B3C0000-memory.dmp
    Filesize

    512KB

    Download