Analysis

  • max time kernel
    72s
  • max time network
    55s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-04-2024 10:30

General

  • Target

    Ref227395588_pdf.scr

  • Size

    505KB

  • MD5

    88db09b12a478cac87ed465252c6c8f7

  • SHA1

    0e3acd2b568bd58fcfd2e914eff2c982deb55258

  • SHA256

    0f0b721073a35fe3e6b37d75582704acd5bdc1b3d71343e74d6fec59ac932deb

  • SHA512

    7d228d662e3271920094e345d36597c2e6c880d12fc3cef8c3f1206711a0b49f93d2275b5527d8ce88c1e3772d0b011161d1bd16688cb9db28471a75b949ab67

  • SSDEEP

    6144:+Z6ySmRH93qXyS8KevIl/8/vpwO4XMGdKf4xU0PrH7KjnvQWTk85KqZIMHYJqE4E:RySuRbpGv64vPrHmnkb+NHYqXZ4fa

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    gator3220.hostgator.com
  • Port:
    587
  • Username:
    zt22@qlststv.com
  • Password:
    28#75@ts76#V1F8h
  • Email To:
    simpacks@qlststv.com

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3792
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" 'C:\Users\Admin\AppData\Local\Temp\Ref227395588_pdf.scr' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\command-line.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1608
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:4604
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
          PID:3508
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
            PID:4924
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
            2⤵
              PID:4888
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
              2⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:4320

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Credential Access

          Unsecured Credentials

          2
          T1552

          Credentials In Files

          2
          T1552.001

          Collection

          Data from Local System

          2
          T1005

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gy5j3zs0.tyc.ps1
            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • memory/1608-15-0x0000000005A60000-0x0000000005AC6000-memory.dmp
            Filesize

            408KB

          • memory/1608-27-0x00000000065D0000-0x000000000661C000-memory.dmp
            Filesize

            304KB

          • memory/1608-26-0x0000000006080000-0x000000000609E000-memory.dmp
            Filesize

            120KB

          • memory/1608-25-0x0000000005BD0000-0x0000000005F24000-memory.dmp
            Filesize

            3.3MB

          • memory/1608-36-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/1608-13-0x00000000051E0000-0x0000000005202000-memory.dmp
            Filesize

            136KB

          • memory/1608-14-0x0000000005940000-0x00000000059A6000-memory.dmp
            Filesize

            408KB

          • memory/1608-8-0x0000000004B00000-0x0000000004B36000-memory.dmp
            Filesize

            216KB

          • memory/1608-12-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
            Filesize

            64KB

          • memory/1608-11-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
            Filesize

            64KB

          • memory/1608-10-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/1608-9-0x0000000005220000-0x0000000005848000-memory.dmp
            Filesize

            6.2MB

          • memory/3792-7-0x0000000004F40000-0x0000000004FDC000-memory.dmp
            Filesize

            624KB

          • memory/3792-28-0x0000000004DE0000-0x0000000004DEA000-memory.dmp
            Filesize

            40KB

          • memory/3792-6-0x0000000004E40000-0x0000000004E96000-memory.dmp
            Filesize

            344KB

          • memory/3792-5-0x0000000004BD0000-0x0000000004BDA000-memory.dmp
            Filesize

            40KB

          • memory/3792-4-0x0000000004E30000-0x0000000004E40000-memory.dmp
            Filesize

            64KB

          • memory/3792-3-0x0000000004C50000-0x0000000004CE2000-memory.dmp
            Filesize

            584KB

          • memory/3792-2-0x0000000005160000-0x0000000005704000-memory.dmp
            Filesize

            5.6MB

          • memory/3792-0-0x0000000000190000-0x0000000000214000-memory.dmp
            Filesize

            528KB

          • memory/3792-1-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/3792-33-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/4320-31-0x0000000005760000-0x0000000005770000-memory.dmp
            Filesize

            64KB

          • memory/4320-30-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/4320-29-0x0000000000400000-0x0000000000442000-memory.dmp
            Filesize

            264KB

          • memory/4320-37-0x0000000075200000-0x00000000759B0000-memory.dmp
            Filesize

            7.7MB

          • memory/4320-38-0x0000000005760000-0x0000000005770000-memory.dmp
            Filesize

            64KB

          • memory/4320-39-0x0000000006C00000-0x0000000006C50000-memory.dmp
            Filesize

            320KB