Analysis

  • max time kernel
    162s
  • max time network
    194s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    20/01/2022, 08:02

General

  • Target

    f3bf04bfa6c87ee6e8f66fce0b5fac59.xll

  • Size

    1.7MB

  • MD5

    f3bf04bfa6c87ee6e8f66fce0b5fac59

  • SHA1

    ccd946fa6eed9551ac8f7f0139d8587bb878007e

  • SHA256

    2045ecc425209bfc5e090d868856afe74cf0cb13dc63f8a00b656aac3fe438ea

  • SHA512

    95eaeac78d60d5a920542286e70b82e268475f072d690c1b26b166cf7e4ade9f800c4ec911c002473281f2e002a47489cab333390952510db0a361563b65844a

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 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\f3bf04bfa6c87ee6e8f66fce0b5fac59.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:1164
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveT.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:1596

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1164-134-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-137-0x00007FFBB1220000-0x00007FFBB1230000-memory.dmp

    Filesize

    64KB

  • memory/1164-138-0x00007FFBB1220000-0x00007FFBB1230000-memory.dmp

    Filesize

    64KB

  • memory/1164-130-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-133-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-132-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-131-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-174-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-175-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-176-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1164-177-0x00007FFBB37B0000-0x00007FFBB37C0000-memory.dmp

    Filesize

    64KB

  • memory/1596-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB