Analysis

  • max time kernel
    145s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    19/01/2022, 03:26

General

  • Target

    964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.xll

  • Size

    1.7MB

  • MD5

    f355eb875cebdf6418598393987aba03

  • SHA1

    558c007d1f4ae8e10d5216fec28d624f0097d31f

  • SHA256

    964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b

  • SHA512

    232964841b6deabf8fec36b5ccdd98f78a72a8cdda9ddc71fee5d7f4cee742049bd78e6b295c02d111ff1172022be8de8b79d07574ab5028ff22acf45e01644a

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\964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.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:2120
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveI.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:3560

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2120-134-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-137-0x00007FF8B2C80000-0x00007FF8B2C90000-memory.dmp

    Filesize

    64KB

  • memory/2120-138-0x00007FF8B2C80000-0x00007FF8B2C90000-memory.dmp

    Filesize

    64KB

  • memory/2120-130-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-133-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-132-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-131-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-174-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-175-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-176-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/2120-177-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

    Filesize

    64KB

  • memory/3560-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB