Analysis

  • max time kernel
    126s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    11-04-2024 00:24

General

  • Target

    2024-04-11_11ac8632bfdc6befcb2e450c8cfba019_icedid_xrat.exe

  • Size

    4.7MB

  • MD5

    11ac8632bfdc6befcb2e450c8cfba019

  • SHA1

    5a73cdcaf4f77f351fe19542d79a329e7c217bb4

  • SHA256

    071fed2284f56078a1f541e8f9915eb908548bef0548d8672e3237972423cbe9

  • SHA512

    e99e82bc8343fc405c884f8be89a88ea09eb8194331639e59b95d371be689269d6fc92b15430426878865f7e8962e4d76a8e0edc8589861dbdefd34eea83a68d

  • SSDEEP

    98304:mjN0SLc/vr22SsaNYfdPBldt6+dBcjHtKRJ6BMIbzZZIbzZR:HSI3M7jGIPsj

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

mx5.deitie.asia:4495

Mutex

ebbf737a-dddd-43dd-9b0a-74831302455d

Attributes
  • encryption_key

    F8516D89A1DFD78BD8FF575BBC3AE828B47FF0E1

  • 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 payload 3 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 3 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 3 IoCs
  • Detects executables containing common artifacts observed in infostealers 3 IoCs
  • Drops startup file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 13 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\2024-04-11_11ac8632bfdc6befcb2e450c8cfba019_icedid_xrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_11ac8632bfdc6befcb2e450c8cfba019_icedid_xrat.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sign.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\\sign.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2924
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:2256
      • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
        "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2628
        • C:\Windows\system32\schtasks.exe
          "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
          4⤵
          • Creates scheduled task(s)
          PID:2516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sign.exe

    Filesize

    3.1MB

    MD5

    7498d554976744dfbd271ba755c6c192

    SHA1

    ec733d01e776518e387d2f51d1a6559b81f03b1e

    SHA256

    44089202623b9671051aa5bba5e72f81f68ce818c3054dde57726aaa6dcb9ff7

    SHA512

    d4e987d0e6235001fac4ae3a634e8fe98c6830e26a6a6876fbc36262842688d3ec301cff75003d2af695cdfd357ac50919946695b7d5d3293ebcba97153e1030

  • memory/2628-13-0x0000000000290000-0x00000000005B4000-memory.dmp

    Filesize

    3.1MB

  • memory/2628-15-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2628-16-0x0000000002520000-0x00000000025A0000-memory.dmp

    Filesize

    512KB

  • memory/2628-17-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2628-18-0x0000000002520000-0x00000000025A0000-memory.dmp

    Filesize

    512KB

  • memory/2924-5-0x0000000000970000-0x0000000000C94000-memory.dmp

    Filesize

    3.1MB

  • memory/2924-6-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

    Filesize

    9.9MB

  • memory/2924-7-0x000000001B360000-0x000000001B3E0000-memory.dmp

    Filesize

    512KB

  • memory/2924-14-0x000007FEF5910000-0x000007FEF62FC000-memory.dmp

    Filesize

    9.9MB