Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/01/2022, 09:55

General

  • Target

    4507c736a5aa8756e4ae1f5a43f16fffbf1f8536cde0f450eb2fb8e9edf68142.xll

  • Size

    1.7MB

  • MD5

    5a0e926c464b2ca981fefa8f4b6216f6

  • SHA1

    e8bff4f832a2826b5479ada18cedb7ccd12dbac0

  • SHA256

    4507c736a5aa8756e4ae1f5a43f16fffbf1f8536cde0f450eb2fb8e9edf68142

  • SHA512

    1b5410ad5d99e87fa1673f9c99c3c3c2deb3768e358ea4faefccdbfbf5d7a9a8c5b5d446cbe8dfa4307ee51d648771f5a26ceaf39167a03c36d1e46150de1060

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\4507c736a5aa8756e4ae1f5a43f16fffbf1f8536cde0f450eb2fb8e9edf68142.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:2700
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectA.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:1724

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1724-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/2700-134-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-138-0x00007FF9EB360000-0x00007FF9EB370000-memory.dmp

    Filesize

    64KB

  • memory/2700-137-0x00007FF9EB360000-0x00007FF9EB370000-memory.dmp

    Filesize

    64KB

  • memory/2700-130-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-133-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-132-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-131-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-174-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-175-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-176-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB

  • memory/2700-177-0x00007FF9ED5B0000-0x00007FF9ED5C0000-memory.dmp

    Filesize

    64KB