Overview

overview

8

Static

static

8

IRS_form_7559663.xls

windows7_x64

6

IRS_form_7559663.xls

windows10_x64

6

Analysis

  • max time kernel
    135s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    08/07/2020, 05:36

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General

  • Target

    IRS_form_7559663.xls

  • Size

    78KB

  • MD5

    9dad374d4a2553733ebf424e3fde48e4

  • SHA1

    905ceab79cf08d1e66293e77fc0c7bbf9326ac69

  • SHA256

    53443315360c434457eca1626003a288924a363677a4e1ca1bbaad902f677674

  • SHA512

    8219a9cf5a80370aa30609e48f580a956874080205ee50102416e6ac8c1c27d62119dcd2e4d10edd507b890fe4a0dfe2cadfedc702fdafe379f206343ad5dbf4

Score
6/10

Malware Config

Signatures

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Process spawned suspicious child process 1 IoCs

    This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

  • Suspicious use of WriteProcessMemory 4 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 use of SetWindowsHookEx 8 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 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\IRS_form_7559663.xls"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of SetWindowsHookEx
    • Suspicious behavior: AddClipboardFormatListener
    PID:724
    • C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
      "C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 3020
      2⤵
      • Process spawned suspicious child process
      • Suspicious use of WriteProcessMemory
      PID:3852
      • C:\Windows\system32\dwwin.exe
        C:\Windows\system32\dwwin.exe -x -s 3020
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3964

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3964-2-0x00000221A4F30000-0x00000221A4F31000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-3-0x00000221A4F30000-0x00000221A4F31000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-5-0x00000221A5660000-0x00000221A5661000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-8-0x00000221A58E0000-0x00000221A58E1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-9-0x00000221A58E0000-0x00000221A58E1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-10-0x00000221A58E0000-0x00000221A58E1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3964-11-0x00000221A55A0000-0x00000221A55A1000-memory.dmp

    Filesize

    4KB

    Download