Overview

overview

10

Static

static

10

Fatal - Free.exe

windows7-x64

10

Fatal - Free.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    06-06-2024 17:27

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General

  • Target

    Fatal - Free.exe

  • Size

    3.1MB

  • MD5

    c0de0f57c69ae9b5aa1ce38896e14fd0

  • SHA1

    e89157053a1af663cc465069ba6fc069813b2753

  • SHA256

    76de148ac9b1a4f05355202bc129130af14f507a9de7662015227b911cd73941

  • SHA512

    9389f777a1d8c864fbe25f92c0e79d87918cd8097b0cf3000534b82c5b8860cec5d81e4179a5ee90c4e43b997af2c1aef6447187a2f9570cd9bb256a231c2141

  • SSDEEP

    49152:Wvkt62XlaSFNWPjljiFa2RoUYIvz7zQhoGd1gTHHB72eh2NT:Wv462XlaSFNWPjljiFXRoUYIvz7zi

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.3.37:4782

Mutex

f92406d0-04ae-497d-aa31-b25c24b863d2

Attributes
  • encryption_key

    FD81B8715CDDADAE86DD8D24006A755C171092F8

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Fatal - Free

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

    persistence
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 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\Fatal - Free.exe
    "C:\Users\Admin\AppData\Local\Temp\Fatal - Free.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3032
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "Fatal - Free" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:2564
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Fatal - Free" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2628
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
    Filesize

    3.1MB

    MD5

    c0de0f57c69ae9b5aa1ce38896e14fd0

    SHA1

    e89157053a1af663cc465069ba6fc069813b2753

    SHA256

    76de148ac9b1a4f05355202bc129130af14f507a9de7662015227b911cd73941

    SHA512

    9389f777a1d8c864fbe25f92c0e79d87918cd8097b0cf3000534b82c5b8860cec5d81e4179a5ee90c4e43b997af2c1aef6447187a2f9570cd9bb256a231c2141

    Download Submit

  • memory/2508-13-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/2508-14-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/2508-15-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/2508-16-0x0000000140000000-0x00000001405E8000-memory.dmp

    Filesize

    5.9MB

    Download

  • memory/2720-8-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2720-10-0x0000000000C30000-0x0000000000F54000-memory.dmp

    Filesize

    3.1MB

    Download

  • memory/2720-11-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2720-12-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/3032-2-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/3032-1-0x00000000012D0000-0x00000000015F4000-memory.dmp

    Filesize

    3.1MB

    Download

  • memory/3032-9-0x000007FEF5CB0000-0x000007FEF669C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/3032-0-0x000007FEF5CB3000-0x000007FEF5CB4000-memory.dmp

    Filesize

    4KB

    Download