Analysis

  • max time kernel
    136s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/01/2022, 12:14

General

  • Target

    FF-1642594447.xll

  • Size

    1.7MB

  • MD5

    c29a9e09451389facd0961601a531605

  • SHA1

    129c8b45205e56810e34505aa1f3aff3d0021bbe

  • SHA256

    fa938c8e0833e3d8a642ab29cb8ecfde8d1ef574837d41a7e4a7c1676ec91531

  • SHA512

    c656bc2107993b36a2ce9bef0d67cdaee1b9d8573770d9033705fe6fff14c6d93915024bcc7fda1006283f7b6ae65a32244e294abc3a3c0a5e0d497fb4a1458b

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
  • 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\FF-1642594447.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:1144
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveU.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:1120

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1120-154-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/1144-134-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-138-0x00007FF83CE40000-0x00007FF83CE50000-memory.dmp

    Filesize

    64KB

  • memory/1144-137-0x00007FF83CE40000-0x00007FF83CE50000-memory.dmp

    Filesize

    64KB

  • memory/1144-130-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-133-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-132-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-131-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-174-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-175-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-176-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB

  • memory/1144-177-0x00007FF83F2D0000-0x00007FF83F2E0000-memory.dmp

    Filesize

    64KB