Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/01/2022, 00:14

General

  • Target

    bf17e17ac450bdb3c8facde0f72402bd.xll

  • Size

    1.7MB

  • MD5

    bf17e17ac450bdb3c8facde0f72402bd

  • SHA1

    e31a8d85239522ef7542291cc66c3ba30d5cb8f1

  • SHA256

    b2e7408b9eb3af0bb7c4267432fa08e92fd335ddc72a69acbab123a7d919fb44

  • SHA512

    64c042d649f83e851086c7172220cecd937f482a50f48e56714bf43ad328ccfa555b69d5f2d3f72254f3daf113bfdffaf446532b3aeee2b3c998a9b557ce7ea5

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 3 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\bf17e17ac450bdb3c8facde0f72402bd.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:1232
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveE.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2228

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1232-130-0x00007FF803FB0000-0x00007FF803FC0000-memory.dmp

    Filesize

    64KB

  • memory/1232-131-0x00007FF803FB0000-0x00007FF803FC0000-memory.dmp

    Filesize

    64KB

  • memory/1232-132-0x00007FF803FB0000-0x00007FF803FC0000-memory.dmp

    Filesize

    64KB

  • memory/1232-133-0x00007FF803FB0000-0x00007FF803FC0000-memory.dmp

    Filesize

    64KB

  • memory/1232-134-0x00007FF803FB0000-0x00007FF803FC0000-memory.dmp

    Filesize

    64KB

  • memory/1232-137-0x00007FF801E70000-0x00007FF801E80000-memory.dmp

    Filesize

    64KB

  • memory/1232-138-0x00007FF801E70000-0x00007FF801E80000-memory.dmp

    Filesize

    64KB

  • memory/2228-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB