Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 23:00

General

  • Target

    EFS QUOTATION LISTS #09172020.pdf.scr

  • Size

    1019KB

  • MD5

    98539cd496816d584ee3b71988fa3df8

  • SHA1

    85b9f77eccb7f413b79216c6d5cd6f0dc2bb878c

  • SHA256

    1dbbc7c4da00acd7ae17d3b37197cd559412d779024efd6fff22e35852a33619

  • SHA512

    d30921f8034e94e43e9a4991353aa2109a0ce73cf22ded41218892c0ec9f42a832a8802339c1bf2a31539dae8cd8ee817695c0cbd7ce6307daa15eb19b140685

  • SSDEEP

    12288:vbLu0mLFPuv2zv1gVzYx8DC3+qZWvQvcA3s6V9oqodtT6QNKXQwhUPe/+ykONWxM:vfup52VnmdYYvF3LoP6QNKXQyC2LS

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr
      "C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr"
      2⤵
        PID:3240
      • C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr
        "C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr"
        2⤵
          PID:2544
        • C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr
          "C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr"
          2⤵
          • Checks computer location settings
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: AddClipboardFormatListener
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:2800
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\EFS QUOTATION LISTS #09172020.pdf.scr'
            3⤵
            • Deletes itself
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1296

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      1
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\EFS QUOTATION LISTS #09172020.pdf.scr.log
        Filesize

        1KB

        MD5

        17573558c4e714f606f997e5157afaac

        SHA1

        13e16e9415ceef429aaf124139671ebeca09ed23

        SHA256

        c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

        SHA512

        f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5skkot4r.zkg.ps1
        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/1296-41-0x0000000006040000-0x0000000006394000-memory.dmp
        Filesize

        3.3MB

      • memory/1296-47-0x0000000006AD0000-0x0000000006AF2000-memory.dmp
        Filesize

        136KB

      • memory/1296-45-0x0000000006A00000-0x0000000006A1A000-memory.dmp
        Filesize

        104KB

      • memory/1296-44-0x0000000007D40000-0x00000000083BA000-memory.dmp
        Filesize

        6.5MB

      • memory/1296-43-0x0000000006520000-0x000000000656C000-memory.dmp
        Filesize

        304KB

      • memory/1296-42-0x00000000064F0000-0x000000000650E000-memory.dmp
        Filesize

        120KB

      • memory/1296-26-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1296-46-0x0000000007760000-0x00000000077F6000-memory.dmp
        Filesize

        600KB

      • memory/1296-31-0x00000000055F0000-0x0000000005656000-memory.dmp
        Filesize

        408KB

      • memory/1296-30-0x0000000005550000-0x0000000005572000-memory.dmp
        Filesize

        136KB

      • memory/1296-29-0x0000000005810000-0x0000000005E38000-memory.dmp
        Filesize

        6.2MB

      • memory/1296-28-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1296-27-0x0000000002BB0000-0x0000000002BE6000-memory.dmp
        Filesize

        216KB

      • memory/1296-50-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1700-10-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1700-8-0x00000000052A0000-0x00000000052B8000-memory.dmp
        Filesize

        96KB

      • memory/1700-1-0x0000000000620000-0x0000000000724000-memory.dmp
        Filesize

        1.0MB

      • memory/1700-2-0x0000000005150000-0x00000000051EC000-memory.dmp
        Filesize

        624KB

      • memory/1700-3-0x00000000057A0000-0x0000000005D44000-memory.dmp
        Filesize

        5.6MB

      • memory/1700-4-0x00000000051F0000-0x0000000005282000-memory.dmp
        Filesize

        584KB

      • memory/1700-5-0x0000000005120000-0x000000000512A000-memory.dmp
        Filesize

        40KB

      • memory/1700-6-0x00000000052F0000-0x0000000005346000-memory.dmp
        Filesize

        344KB

      • memory/1700-7-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1700-18-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/1700-9-0x0000000074E6E000-0x0000000074E6F000-memory.dmp
        Filesize

        4KB

      • memory/1700-13-0x0000000006160000-0x00000000061EA000-memory.dmp
        Filesize

        552KB

      • memory/1700-12-0x0000000005360000-0x0000000005366000-memory.dmp
        Filesize

        24KB

      • memory/1700-11-0x00000000060B0000-0x000000000615A000-memory.dmp
        Filesize

        680KB

      • memory/1700-0-0x0000000074E6E000-0x0000000074E6F000-memory.dmp
        Filesize

        4KB

      • memory/2800-14-0x0000000000400000-0x0000000000486000-memory.dmp
        Filesize

        536KB

      • memory/2800-17-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/2800-25-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/2800-24-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/2800-23-0x0000000006B20000-0x0000000006B70000-memory.dmp
        Filesize

        320KB

      • memory/2800-22-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/2800-21-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB

      • memory/2800-20-0x0000000006150000-0x00000000061B6000-memory.dmp
        Filesize

        408KB

      • memory/2800-19-0x0000000074E60000-0x0000000075610000-memory.dmp
        Filesize

        7.7MB