Analysis

  • max time kernel
    155s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 16:13

General

  • Target

    85f6edaa9fcf9646a82acef0fdf9873c.xll

  • Size

    1.7MB

  • MD5

    85f6edaa9fcf9646a82acef0fdf9873c

  • SHA1

    42d69db511a6957edf4ad4debd64fa9f9ff8e870

  • SHA256

    b31cdc9d1f82f0e85faedf8a95cddcfb94ea68db5c9a496a4365db19b7272380

  • SHA512

    fddf8ecf4186351d80378e6650ca1bc8a60191c16ea715271f0d23c50c024d1d1ac61ee176969c6cbf016b28b322b74de02aa8dcc99e3d23c0fab8896493325b

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 1 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\85f6edaa9fcf9646a82acef0fdf9873c.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:632
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectQ.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2940
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
    1⤵
      PID:2352

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/632-137-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-140-0x00007FFF29F50000-0x00007FFF29F60000-memory.dmp

      Filesize

      64KB

    • memory/632-141-0x00007FFF29F50000-0x00007FFF29F60000-memory.dmp

      Filesize

      64KB

    • memory/632-133-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-136-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-135-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-134-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-177-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-178-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-179-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/632-180-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp

      Filesize

      64KB

    • memory/2940-157-0x0000000180000000-0x000000018003C000-memory.dmp

      Filesize

      240KB