Analysis

  • max time kernel
    102s
  • max time network
    118s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-12-2024 21:25

General

  • Target

    9fc62e93093deacf75ab2426abbba7e78b36d36e11a4bcdaac68cb4c32368d8a.exe

  • Size

    348KB

  • MD5

    655721756f7f0871ddeff7fb2c01bfb6

  • SHA1

    6808fbdeea57fbb25d663427db2bd9dbb835b72f

  • SHA256

    9fc62e93093deacf75ab2426abbba7e78b36d36e11a4bcdaac68cb4c32368d8a

  • SHA512

    81be626be4972d75be82e5c7cefe9992d6a029a4849dcb2fdafb950ed7429ef8e880093fa5db7a46633a9ba18f65015faa3346f986281e62998bca70c021a80c

  • SSDEEP

    6144:mzNHXf500MsYYQiLTVdbw35O7f6v/D2mGipQZb/cVXST:od50LOuOmvr2pipQZb/cVXST

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

192.168.252.1:4782

Mutex

QSR_MUTEX_nAO3ZxsttzfVnn6gik

Attributes
  • encryption_key

    XoQ4ARQwU8sc1owNPsxw

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 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.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9fc62e93093deacf75ab2426abbba7e78b36d36e11a4bcdaac68cb4c32368d8a.exe
    "C:\Users\Admin\AppData\Local\Temp\9fc62e93093deacf75ab2426abbba7e78b36d36e11a4bcdaac68cb4c32368d8a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2396-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

    Filesize

    4KB

  • memory/2396-1-0x00000000001B0000-0x000000000020E000-memory.dmp

    Filesize

    376KB

  • memory/2396-2-0x0000000005100000-0x00000000056A4000-memory.dmp

    Filesize

    5.6MB

  • memory/2396-3-0x0000000004C30000-0x0000000004CC2000-memory.dmp

    Filesize

    584KB

  • memory/2396-4-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/2396-5-0x0000000004CD0000-0x0000000004D36000-memory.dmp

    Filesize

    408KB

  • memory/2396-6-0x0000000005920000-0x0000000005932000-memory.dmp

    Filesize

    72KB

  • memory/2396-7-0x0000000005E60000-0x0000000005E9C000-memory.dmp

    Filesize

    240KB

  • memory/2396-8-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

    Filesize

    4KB

  • memory/2396-9-0x0000000074B90000-0x0000000075340000-memory.dmp

    Filesize

    7.7MB

  • memory/2396-10-0x0000000006020000-0x000000000602A000-memory.dmp

    Filesize

    40KB