Analysis

  • max time kernel
    109s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 09:39

General

  • Target

    2741d6da882c151334cb7777b2f8bf26f8b0e197d244f1aa86570b040f334a76.xll

  • Size

    1.7MB

  • MD5

    7d42847bf18bc1de902661998c69991f

  • SHA1

    55feab0ce9c6eb0558b34c801d2f290ddb570afe

  • SHA256

    2741d6da882c151334cb7777b2f8bf26f8b0e197d244f1aa86570b040f334a76

  • SHA512

    5ae2d47ad7d4b44b4338676a5c244ea54b9fc9e8bcdd20345de189365a13d146504e962dc57907be52dca5a0bb2b81c577c71af7df25ef00bbab902ebd5b5f36

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 4 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\2741d6da882c151334cb7777b2f8bf26f8b0e197d244f1aa86570b040f334a76.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:3872
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectX.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:2508

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2508-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/3872-134-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-138-0x00007FFDC06F0000-0x00007FFDC0700000-memory.dmp

    Filesize

    64KB

  • memory/3872-137-0x00007FFDC06F0000-0x00007FFDC0700000-memory.dmp

    Filesize

    64KB

  • memory/3872-130-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-133-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-132-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-131-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-174-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-175-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-176-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3872-177-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB