Analysis

  • max time kernel
    121s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19/01/2022, 09:14

General

  • Target

    75cdb51337ba20c2f53bc8dac34e55678cc01b7698550ba91aaa3ce667af32c0.xll

  • Size

    1.7MB

  • MD5

    ae5c387389575adab73f177a746b1f7e

  • SHA1

    b3e56b3dabed8f748d6e94c91c9c2f43fb0ad784

  • SHA256

    75cdb51337ba20c2f53bc8dac34e55678cc01b7698550ba91aaa3ce667af32c0

  • SHA512

    2a45a1094746463274e86bd48bcf40e820a0d4d56fae35d74e493978b9835e7877c42ddde0da5b3bce7df42e49edd64dcd5b243459480c84f4e1149972a950d4

Malware Config

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\75cdb51337ba20c2f53bc8dac34e55678cc01b7698550ba91aaa3ce667af32c0.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:2796
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\JavaObjectReflectB.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Loads dropped DLL
      PID:1944

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1944-259-0x0000000180000000-0x000000018003C000-memory.dmp

    Filesize

    240KB

  • memory/2796-121-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-129-0x00007FFF786A0000-0x00007FFF786B0000-memory.dmp

    Filesize

    64KB

  • memory/2796-128-0x00007FFF786A0000-0x00007FFF786B0000-memory.dmp

    Filesize

    64KB

  • memory/2796-115-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-118-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-117-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-116-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-281-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-282-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-283-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB

  • memory/2796-284-0x00007FFF7B1F0000-0x00007FFF7B200000-memory.dmp

    Filesize

    64KB