Overview

overview

8

Static

static

8

W2_tax.xls

windows7_x64

6

W2_tax.xls

windows10_x64

6

Analysis

  • max time kernel
    135s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    09-07-2020 15:10

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General

  • Target

    W2_tax.xls

  • Size

    78KB

  • MD5

    1fd2f585ce9317cb4ef6e4c233ada13d

  • SHA1

    3357e3ea80149ca4e70d3d2ff1a362c8c7bd2c9d

  • SHA256

    a29c5c74a10ecc2aa343ec8da39c2549ceaad1f6d1cd7a2b1ddaf8f15d913c2c

  • SHA512

    0e90c2855aa6b815c5caf1c6f83c2bf1dd7d590a92744f90627383c6376a59ea38b5dd1d093c74e40a9a93d662c437de10201c9b85e671ba3a6145df2482184c

Score
6/10

Malware Config

Signatures

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • 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

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\W2_tax.xls"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious use of SetWindowsHookEx
    PID:2804
    • 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 4516
      2⤵
      • Process spawned suspicious child process
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Windows\system32\dwwin.exe
        C:\Windows\system32\dwwin.exe -x -s 4516
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4028

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • memory/984-0-0x0000000000000000-mapping.dmp
    Download
  • memory/4028-1-0x0000000000000000-mapping.dmp
    Download
  • memory/4028-2-0x000002C9FCEA0000-0x000002C9FCEA1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-3-0x000002C980820000-0x000002C980821000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-4-0x000002C980820000-0x000002C980821000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-6-0x000002C980820000-0x000002C980821000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-7-0x000002C980C20000-0x000002C980C21000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-9-0x000002C980B60000-0x000002C980B61000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-10-0x000002C980B60000-0x000002C980B61000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4028-11-0x000002C980B60000-0x000002C980B61000-memory.dmp
    Filesize

    4KB

    Download