Overview

overview

10

Static

static

TAX INVOICE pdf.exe

windows7_x64

10

TAX INVOICE pdf.exe

windows10_x64

10

Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    12/04/2021, 18:46

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    TAX INVOICE pdf.exe
  • Size 824KB
  • Sample210412-blapt17s1s
  • SHA256 bfa5c7ef6ac526946d60e2ebcb22c2f9e3ffeec8c9d42bc6d54a6d3373815034
  • MD5 SHA1 SHA512
Score
10/10
formbookratspywarestealertrojan

Malware Config

Extracted

Family

  • formbook

Version

  • 4.1

C2

  • http://w����5 �@q[*��S=���m

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

    trojanspywarestealerformbook
  • Formbook Payload 3 IoCs
    rat
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Local\Temp\TAX INVOICE pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\TAX INVOICE pdf.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3944
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QQIYNHm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9154.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2024
      • C:\Users\Admin\AppData\Local\Temp\TAX INVOICE pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\TAX INVOICE pdf.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:2948
    • C:\Windows\SysWOW64\chkdsk.exe
      "C:\Windows\SysWOW64\chkdsk.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:752
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\TAX INVOICE pdf.exe"
        3⤵
          PID:3956

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/752-126-0x0000000000D20000-0x0000000000D2A000-memory.dmp
          Download

          memory/752-127-0x0000000000B50000-0x0000000000B7E000-memory.dmp
          Download

          memory/752-130-0x00000000053C0000-0x0000000005453000-memory.dmp
          Download

          memory/752-129-0x0000000005000000-0x0000000005320000-memory.dmp
          Download

          memory/2492-124-0x00000000059F0000-0x0000000005B40000-memory.dmp
          Download

          memory/2492-131-0x0000000001470000-0x0000000001514000-memory.dmp
          Download

          memory/2948-119-0x0000000000400000-0x000000000042E000-memory.dmp
          Download

          memory/2948-123-0x00000000017F0000-0x0000000001804000-memory.dmp
          Download

          memory/2948-122-0x0000000001830000-0x0000000001B50000-memory.dmp
          Download

          memory/3944-116-0x000000007EDF0000-0x000000007EDF1000-memory.dmp
          Download

          memory/3944-114-0x0000000002940000-0x0000000002941000-memory.dmp
          Download

          memory/3944-115-0x0000000002941000-0x0000000002942000-memory.dmp
          Download