Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19/01/2022, 01:07

General

  • Target

    b9161245a81bdee1f12e09a4a66abb8ec219f10a4fbfa2023dcf2ca4a2ab7114.xll

  • Size

    1.7MB

  • MD5

    f75225bfef07aa3184aa677b61520bd3

  • SHA1

    dc32f7bdb0fb5c76df8dd1a235ef9c0f85138af6

  • SHA256

    b9161245a81bdee1f12e09a4a66abb8ec219f10a4fbfa2023dcf2ca4a2ab7114

  • SHA512

    08c3c4c7e9674cbc14a6ed456c6778dc527dc905300e14bd990be73eccc890ce60b7f7d39c41a8e6da659efa3d1b3b671b5cdf30aa7fbc5d5b495b334017824e

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
  • 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\b9161245a81bdee1f12e09a4a66abb8ec219f10a4fbfa2023dcf2ca4a2ab7114.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:3812
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveH.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2128

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2128-259-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/3812-121-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-129-0x00007FFD2F860000-0x00007FFD2F870000-memory.dmp

    Filesize

    64KB

  • memory/3812-128-0x00007FFD2F860000-0x00007FFD2F870000-memory.dmp

    Filesize

    64KB

  • memory/3812-115-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-118-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-117-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-116-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-281-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-282-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-283-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB

  • memory/3812-284-0x00007FFD329F0000-0x00007FFD32A00000-memory.dmp

    Filesize

    64KB