Analysis

  • max time kernel
    109s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 02:35

General

  • Target

    52db9c20a7e362af2fd93800154e761a7fbc7253b9c97d77ec2df6c6e691e0c2.xll

  • Size

    1.7MB

  • MD5

    77461abc7157340cedea763e2813c965

  • SHA1

    f842ba990c8df5f05d11d00873cbc5c0e082dff4

  • SHA256

    52db9c20a7e362af2fd93800154e761a7fbc7253b9c97d77ec2df6c6e691e0c2

  • SHA512

    0ce714c92719788605b4b8d7cb27b481963ce9a6084af183e75a246bc23d0fab65dc86fc395aa46d1ec8b47e0c9cfda7a0efd63dc9af865ce2bfd9668cb5b456

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
  • 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\52db9c20a7e362af2fd93800154e761a7fbc7253b9c97d77ec2df6c6e691e0c2.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:3748
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectW.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:2936

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2936-952-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/3748-130-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3748-131-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB

  • memory/3748-132-0x00007FFDC2850000-0x00007FFDC2860000-memory.dmp

    Filesize

    64KB