Overview

overview

10

Static

static

1 payment invoice.exe

windows7_x64

1

1 payment invoice.exe

windows10_x64

10

Analysis

  • max time kernel
    108s
  • max time network
    111s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    28/12/2020, 07:07

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General

  • Target
    1 payment invoice.exe
  • Size 434KB
  • Sample201228-pn6q5flffe
  • SHA256 a3d29f3885b26ef7959221cf8f1110cc9165c83a2b40ed8bd354a846fb7d3f21
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Credentials
  • Protocol

    smtp
  • Host

    pro40.emailserver.vn
  • Port

    587
  • Username

    [email protected]
  • Password

    Vexa@2013

Signatures

  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1 payment invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\1 payment invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3084
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\93b307bb395746148ecc2794fed9472d.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2880
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN name /XML "C:\Users\Admin\AppData\Local\Temp\93b307bb395746148ecc2794fed9472d.xml"
        3⤵
        • Creates scheduled task(s)
        PID:3924
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\1 payment invoice.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3592

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3592-4-0x0000000000400000-0x000000000046A000-memory.dmp
        Download

        memory/3592-8-0x00000000736D0000-0x0000000073DBE000-memory.dmp
        Download

        memory/3592-11-0x00000000054F0000-0x00000000054F1000-memory.dmp
        Download

        memory/3592-12-0x0000000005BB0000-0x0000000005BB1000-memory.dmp
        Download

        memory/3592-13-0x0000000006780000-0x0000000006781000-memory.dmp
        Download

        memory/3592-14-0x00000000069F0000-0x00000000069F1000-memory.dmp
        Download

        memory/3592-15-0x0000000006760000-0x0000000006761000-memory.dmp
        Download