Overview

overview

10

Static

static

ac96920684...ac.xll

windows7_x64

7

ac96920684...ac.xll

windows10-2004_x64

10

Analysis

  • max time kernel
    144s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    20/01/2022, 07:50

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General

  • Target
    ac96920684c5c701f1c69152019d50ac.xll
  • Size 1.7MB
  • Sample220120-jpan2agha4
  • SHA256 7912ecf58bf36144f792f5fb357c4194229b1e3728d9852c4376fa297ddaad5f
  • MD5 SHA1 SHA512
Score
10/10
bazarloaderdropperloader

Malware Config

Extracted

Language

  • xlm4.0

Source

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

    loaderdropperbazarloader
  • 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\ac96920684c5c701f1c69152019d50ac.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:820
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectU.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2192

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/820-130-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp
        Download

        memory/820-131-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp
        Download

        memory/820-132-0x00007FF9EFD30000-0x00007FF9EFD40000-memory.dmp
        Download

        memory/2192-791-0x0000000180000000-0x000000018003C000-memory.dmp
        Download