Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/01/2022, 04:26

General

  • Target

    f983a109d3d2856794352c36289e6f34f0f55420acfdc196ec9c75095eb79c90.xll

  • Size

    1.7MB

  • MD5

    e476534e17521b823794d3cc338da3e5

  • SHA1

    f26daa812ee01d3c5b6cb3412248107ad5b8253d

  • SHA256

    f983a109d3d2856794352c36289e6f34f0f55420acfdc196ec9c75095eb79c90

  • SHA512

    32a37814a8110da741386b4aba804002eadbdea1390961bc291acfda709c8d0e0644b68e228d35d828f2b916fbd21b3e4bb2acde2c7ff2a66fc7292462c4d7ae

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 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\f983a109d3d2856794352c36289e6f34f0f55420acfdc196ec9c75095eb79c90.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:1432
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectO.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2932

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1432-134-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-137-0x00007FF8A4630000-0x00007FF8A4640000-memory.dmp

    Filesize

    64KB

  • memory/1432-138-0x00007FF8A4630000-0x00007FF8A4640000-memory.dmp

    Filesize

    64KB

  • memory/1432-130-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-133-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-132-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-131-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-174-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-175-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-176-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/1432-177-0x00007FF8A6690000-0x00007FF8A66A0000-memory.dmp

    Filesize

    64KB

  • memory/2932-154-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB