Analysis

  • max time kernel
    121s
  • max time network
    143s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    22/01/2022, 13:16

General

  • Target
    a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.xll
  • Size 1.7MB
  • Sample220122-qhsplabddl
  • SHA256 a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307
  • MD5 SHA1 SHA512

Malware Config

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\a134c216fa5bdd844aa6c620365776754d618280a7982aa11b81a11f0bbca307.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:2776
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectK.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:1812

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1812-263-0x0000000180000000-0x000000018003C000-memory.dmp

        memory/2776-119-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-129-0x00007FFD76670000-0x00007FFD76680000-memory.dmp

        memory/2776-128-0x00007FFD76670000-0x00007FFD76680000-memory.dmp

        memory/2776-115-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-118-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-117-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-116-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-285-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-286-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-287-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

        memory/2776-288-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp