Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 10:58

General

  • Target

    FF-1642589841.xll

  • Size

    1.7MB

  • MD5

    f113fd9a32bdff6c4a90a0ccd905fd97

  • SHA1

    c3edf7f63f3e65fef0ddf17e47d6d048ba3ee4d7

  • SHA256

    465f6c30e884e9422573f39388e9aff5709c40301baf83369bffac32a797bb4d

  • SHA512

    84f4355a0ee609df9b84f37d4a6ffff1d8dfd0637823c41e7d3a5d8991efd2d55a04d92a1455ceacb0e04b8283f2ba8504b9ad8eb9bf75f2430bf0e228f1a560

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\FF-1642589841.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:3708
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectH.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:3272

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3272-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/3708-130-0x00007FFC21BB0000-0x00007FFC21BC0000-memory.dmp

    Filesize

    64KB

  • memory/3708-132-0x00007FFC21BB0000-0x00007FFC21BC0000-memory.dmp

    Filesize

    64KB

  • memory/3708-131-0x00007FFC21BB0000-0x00007FFC21BC0000-memory.dmp

    Filesize

    64KB

  • memory/3708-133-0x00007FFC21BB0000-0x00007FFC21BC0000-memory.dmp

    Filesize

    64KB

  • memory/3708-134-0x00007FFC21BB0000-0x00007FFC21BC0000-memory.dmp

    Filesize

    64KB

  • memory/3708-137-0x00007FFC1F2F0000-0x00007FFC1F300000-memory.dmp

    Filesize

    64KB

  • memory/3708-138-0x00007FFC1F2F0000-0x00007FFC1F300000-memory.dmp

    Filesize

    64KB