Overview

overview

10

Static

static

Offer[2022...9].xll

windows7_x64

7

Offer[2022...9].xll

windows10-2004_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    20/01/2022, 14:35

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General

  • Target
    Offer[2022.01.19_17-49].xll
  • Size 1.7MB
  • Sample220120-rxzbcsacg2
  • SHA256 20d63add3b82b4769281fdc673c10e8eb882a87525e9a51570c341b537560acf
  • MD5 SHA1 SHA512
Score
10/10
bazarloaderdropperloader

Malware Config

Extracted

Language

  • xlm4.0

Source

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

    loaderdropperbazarloader
  • 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\Offer[2022.01.19_17-49].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:2184
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32 C:\Users\Admin\OracleResponsiveY.dll , dopt
      2⤵
      • Process spawned unexpected child process
      • Blocklisted process makes network request
      • Loads dropped DLL
      PID:3548
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
    1⤵
      PID:1720

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2184-131-0x00007FFB89030000-0x00007FFB89040000-memory.dmp
          Download

          memory/2184-132-0x00007FFB89030000-0x00007FFB89040000-memory.dmp
          Download

          memory/2184-133-0x00007FFB89030000-0x00007FFB89040000-memory.dmp
          Download

          memory/3548-967-0x0000000180000000-0x000000018003C000-memory.dmp
          Download