Analysis

  • max time kernel
    133s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19/01/2022, 12:16

General

  • Target

    628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf.xll

  • Size

    1.7MB

  • MD5

    b93d82f11a5e25f636292756755dcb34

  • SHA1

    f4f73365f963e1ff660647ea5fec64183232a359

  • SHA256

    628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf

  • SHA512

    cb20f48d26c57cdc7a24db0fbd77ad7fd4f94ae5bbc6a7a740284efe111fae1cc719c88c874b5651c6e13a7166cc5cbd21f6bc8d4ea02b98b83cc48d523a204e

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\628430a43571477dd00085cdcdaa9a834e030cb80e39ae19b6a107c1f904e2cf.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:416
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectiveO.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:452

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/416-134-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-137-0x00007FFB9E360000-0x00007FFB9E370000-memory.dmp

    Filesize

    64KB

  • memory/416-138-0x00007FFB9E360000-0x00007FFB9E370000-memory.dmp

    Filesize

    64KB

  • memory/416-130-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-133-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-132-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-131-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-174-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-175-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-176-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/416-177-0x00007FFBA05F0000-0x00007FFBA0600000-memory.dmp

    Filesize

    64KB

  • memory/452-152-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB