Analysis

  • max time kernel
    125s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18-12-2024 02:04

General

  • Target

    061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe

  • Size

    3.1MB

  • MD5

    ce560e01aa6d0a1848eacb577880f112

  • SHA1

    ac6013ab7dec397c0f14368492047e5f54091f2c

  • SHA256

    061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

  • SHA512

    988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec

  • SSDEEP

    49152:GvUt62XlaSFNWPjljiFa2RoUYI1EF3mMnAfvAoGd5THHB72eh2NT:GvI62XlaSFNWPjljiFXRoUYI1K3L

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

su-pc

C2

192.168.100.2:4444

Mutex

47a88def-94f4-406d-86f5-8b0b767128df

Attributes
  • encryption_key

    6B74F0C858B7E90573D4E97997F2A082B9781250

  • install_name

    x.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    x

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in System32 directory 5 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
    "C:\Users\Admin\AppData\Local\Temp\061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2948
    • C:\Windows\system32\schtasks.exe
      "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1084
    • C:\Windows\system32\SubDir\x.exe
      "C:\Windows\system32\SubDir\x.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3004
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3044

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\System32\SubDir\x.exe

    Filesize

    3.1MB

    MD5

    ce560e01aa6d0a1848eacb577880f112

    SHA1

    ac6013ab7dec397c0f14368492047e5f54091f2c

    SHA256

    061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

    SHA512

    988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec

  • memory/2948-0-0x000007FEF6513000-0x000007FEF6514000-memory.dmp

    Filesize

    4KB

  • memory/2948-1-0x0000000000A90000-0x0000000000DB4000-memory.dmp

    Filesize

    3.1MB

  • memory/2948-2-0x000007FEF6510000-0x000007FEF6EFC000-memory.dmp

    Filesize

    9.9MB

  • memory/2948-10-0x000007FEF6510000-0x000007FEF6EFC000-memory.dmp

    Filesize

    9.9MB

  • memory/3004-8-0x000007FEF6510000-0x000007FEF6EFC000-memory.dmp

    Filesize

    9.9MB

  • memory/3004-9-0x0000000000FD0000-0x00000000012F4000-memory.dmp

    Filesize

    3.1MB

  • memory/3004-11-0x000007FEF6510000-0x000007FEF6EFC000-memory.dmp

    Filesize

    9.9MB

  • memory/3004-12-0x000007FEF6510000-0x000007FEF6EFC000-memory.dmp

    Filesize

    9.9MB