Analysis

  • max time kernel
    93s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-06-2024 01:51

General

  • Target

    e2cc914a1df535f2cf88007a518a9990afe5ccdb9cf1262e550e2ce8cc9c7eb0.exe

  • Size

    916KB

  • MD5

    6784aa946d316985ed1b8698ad2b9831

  • SHA1

    7a292430ad4c64a575ada8900d99e8fbe33f5785

  • SHA256

    e2cc914a1df535f2cf88007a518a9990afe5ccdb9cf1262e550e2ce8cc9c7eb0

  • SHA512

    53ed9d033600d7cd0d60dedecad4d7fdae2f202982fb9ea6084cd7e2602df3b285bdc688b9acdd52f6bd6114e77945748bb4d73883063f79d8db92031a70fd48

  • SSDEEP

    24576:tmkdueXjq0OQKc2YSEegpQRDLusJLK1lk2oLP:IkdueXjq0OQKc2YSEegpshk1lk

Malware Config

Extracted

Family

quasar

Version

2.8.0.1

Botnet

Hotels

C2

45.40.96.164:5552

Mutex

4zqoNUTZKMvnLHkoUD

Attributes
  • encryption_key

    DrELkLp18Pk08e6KWRUc

  • install_name

    Registry.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Hotels Client Startup

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF 1 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 1 IoCs
  • Detects executables embedding command execution via IExecuteCommand COM object 1 IoCs
  • Detects executables embedding registry key / value combination indicative of disabling Windows Defender features 1 IoCs
  • Detects file containing reversed ASEP Autorun registry keys 1 IoCs
  • detects Windows exceutables potentially bypassing UAC using eventvwr.exe 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e2cc914a1df535f2cf88007a518a9990afe5ccdb9cf1262e550e2ce8cc9c7eb0.exe
    "C:\Users\Admin\AppData\Local\Temp\e2cc914a1df535f2cf88007a518a9990afe5ccdb9cf1262e550e2ce8cc9c7eb0.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:668

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/668-0-0x000000007482E000-0x000000007482F000-memory.dmp

    Filesize

    4KB

  • memory/668-1-0x0000000000F90000-0x000000000107C000-memory.dmp

    Filesize

    944KB

  • memory/668-2-0x0000000005FB0000-0x0000000006554000-memory.dmp

    Filesize

    5.6MB

  • memory/668-3-0x0000000005AA0000-0x0000000005B32000-memory.dmp

    Filesize

    584KB

  • memory/668-4-0x0000000074820000-0x0000000074FD0000-memory.dmp

    Filesize

    7.7MB

  • memory/668-5-0x0000000005B40000-0x0000000005BA6000-memory.dmp

    Filesize

    408KB

  • memory/668-6-0x00000000068A0000-0x00000000068B2000-memory.dmp

    Filesize

    72KB

  • memory/668-7-0x0000000006DE0000-0x0000000006E1C000-memory.dmp

    Filesize

    240KB

  • memory/668-8-0x0000000007520000-0x000000000752A000-memory.dmp

    Filesize

    40KB

  • memory/668-9-0x000000007482E000-0x000000007482F000-memory.dmp

    Filesize

    4KB

  • memory/668-10-0x0000000074820000-0x0000000074FD0000-memory.dmp

    Filesize

    7.7MB