Analysis

  • max time kernel
    143s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 16:28

General

  • Target

    113fa9ae34480ab1f6b091d8928b9716a4e7dffeb3c9c47129ed249af762b47a.xll

  • Size

    1.7MB

  • MD5

    b47c88fd74a78d1125de7b06893861c0

  • SHA1

    6751d6a7b3e9b274a7b91c5ace5e0300eb5b7fe7

  • SHA256

    113fa9ae34480ab1f6b091d8928b9716a4e7dffeb3c9c47129ed249af762b47a

  • SHA512

    198d1ea049a7b929a409f3d6f33312233016fdee3e4a964dc48cd613fbd2c8eb4a5b9bc1a29d2f2eb178a4c7be023c70b108c10ef39857e8980e42e248b757dc

Malware Config

Extracted

Language
xlm4.0
Source

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Bazar/Team9 Loader payload 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\113fa9ae34480ab1f6b091d8928b9716a4e7dffeb3c9c47129ed249af762b47a.xll"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectD.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:3552
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
    1⤵
      PID:3936

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3220-137-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-140-0x00007FFA37100000-0x00007FFA37110000-memory.dmp

      Filesize

      64KB

    • memory/3220-141-0x00007FFA37100000-0x00007FFA37110000-memory.dmp

      Filesize

      64KB

    • memory/3220-133-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-136-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-135-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-134-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-177-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-178-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-179-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3220-180-0x00007FFA39A30000-0x00007FFA39A40000-memory.dmp

      Filesize

      64KB

    • memory/3552-157-0x0000000180000000-0x000000018003C000-memory.dmp

      Filesize

      240KB