Overview

overview

10

Static

static

Purchase O...df.exe

windows7_x64

10

Purchase O...df.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    92s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20/05/2022, 23:47

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General

  • Target
    Purchase Order.pdf.exe
  • Size 361KB
  • Sample220520-3syptacdak
  • SHA256 074c065bacbb7880ce7f0d4d2ef0794398bf9152beb9a59d6d7f096b6e94e44d
  • MD5 SHA1 SHA512
Score
10/10
matiexcollectionkeyloggerspywarestealer

Malware Config

Extracted

Family

  • matiex

Credentials
  • Protocol

    smtp
  • Host

    smtp.yandex.com
  • Port

    587
  • Username

    [email protected]
  • Password

    GOOD123456

Signatures

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

    stealerkeyloggermatiex
  • Matiex Main Payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

    spywarestealer
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 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 6 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3216
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TluNTUKXvqN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC61F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1560
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:320
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 2028
        3⤵
        • Program crash
        PID:1920
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 320 -ip 320
    1⤵
      PID:3104

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          Purchase Order.pdf.exe.log
          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Purchase Order.pdf.exe.log
          • Size 412B
          • SHA256 0a534a3d0fa82e6a427164c5f6e702cac7e4afc9967af9bc5ddba4f84ab33276
          • MD5 SHA1 SHA512
          Submit Download

          tmpC61F.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\tmpC61F.tmp
          • Size 1KB
          • SHA256 bddb27d0357c8708003b35c663fc7a77f17489e1afb5e7db01cce7bd1e44cc96
          • MD5 SHA1 SHA512
          Submit Download

          memory/320-136-0x0000000000400000-0x0000000000474000-memory.dmp
          Download

          memory/320-138-0x0000000005710000-0x0000000005CB4000-memory.dmp
          Download

          memory/320-139-0x00000000050B0000-0x0000000005116000-memory.dmp
          Download

          memory/3216-130-0x0000000000200000-0x0000000000260000-memory.dmp
          Download

          memory/3216-131-0x0000000004F20000-0x0000000004FBC000-memory.dmp
          Download

          memory/3216-132-0x0000000005060000-0x00000000050F2000-memory.dmp
          Download