Analysis

  • max time kernel
    131s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11-04-2024 00:32

General

  • Target

    2024-04-11_7157bb4fd707d8feb0688e02de58e2f6_icedid_xrat.exe

  • Size

    4.7MB

  • MD5

    7157bb4fd707d8feb0688e02de58e2f6

  • SHA1

    f645fd81e17916034701e03e94109835bdaaa315

  • SHA256

    f16b09c1b311892dbe11c466c2bf4393f2750e1365e9d3c59983e7b5c03a0734

  • SHA512

    b665018d4747eeeeba89bbf6620e45478de53e27d24406270723a2c4607ec52f67457a3f8b070203c7a4ae69153fe701f7e515a28248791ed6406bdbc36ec11b

  • SSDEEP

    98304:eYD10K/8fvr22SsaNYfdPBldt6+dBcjHtKRJ6BcIbzZFIbzZR:CKUXM7jGIfAj

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 4 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_7157bb4fd707d8feb0688e02de58e2f6_icedid_xrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-11_7157bb4fd707d8feb0688e02de58e2f6_icedid_xrat.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2220
    • 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:1756
      • 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:2160
      • 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:2388
        • 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:2676

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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/1756-5-0x0000000000E30000-0x0000000001154000-memory.dmp

    Filesize

    3.1MB

  • memory/1756-6-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/1756-7-0x000000001B610000-0x000000001B690000-memory.dmp

    Filesize

    512KB

  • memory/1756-14-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2388-13-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2388-15-0x0000000000290000-0x00000000005B4000-memory.dmp

    Filesize

    3.1MB

  • memory/2388-16-0x000000001AFB0000-0x000000001B030000-memory.dmp

    Filesize

    512KB

  • memory/2388-17-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

    Filesize

    9.9MB

  • memory/2388-18-0x000000001AFB0000-0x000000001B030000-memory.dmp

    Filesize

    512KB