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
    20/06/2024, 03:05

General

  • Target

    chem-03240.pdf.exe

  • Size

    975KB

  • MD5

    fb037c0e0a26a6399cc3c22f24d819db

  • SHA1

    9da8dfc260523640c23d77bd37cc012af7275e09

  • SHA256

    c5e436daea517264f270beba101c5d2ae9d9b25a72c8c4ed049239ecddb7fcc8

  • SHA512

    a23fc689ca44c46ebc78eaf39dfbe4aac5b366cffe0b43cfbf2214f02a67c19b8a9977b5cf1d5bb1374fca9f335245a7742907f58a152008dbc0de941fd1f62e

  • SSDEEP

    24576:hbtQQlz5uaQ9pOXsSdsSSd6MsxpnmhB4nYJ/Z:hbN1EjpOXsksSbfdYL

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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 1 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4672
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1108
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jBIBnuQ.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3944
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jBIBnuQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E69.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2112
    • C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"
      2⤵
        PID:5032
      • C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe
        "C:\Users\Admin\AppData\Local\Temp\chem-03240.pdf.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3824

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

            Filesize

            2KB

            MD5

            3d086a433708053f9bf9523e1d87a4e8

            SHA1

            b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

            SHA256

            6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

            SHA512

            931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            18KB

            MD5

            38f863352b444d061f67b2ac28f03599

            SHA1

            ac6c400e9ead0bfedab419fe71625770e0629027

            SHA256

            0e9f4eef6251eef288a9ec9e0351fe24c5051b5949027a656a5779f74f122e74

            SHA512

            cd73b24b08c626686bd4d33462c499b7ea5b0e650932a8aa3e7c4460629f8cfa7640bca226fe71720c24b81db2190430a52c96d2d42334f33b06adea7572c96a

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iws0jvuc.2to.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\tmp6E69.tmp

            Filesize

            1KB

            MD5

            0a2bd48b8e0269c0b3fa579d1002289e

            SHA1

            3266f75727eecca4eabe3c36cecdb30b28a36cb7

            SHA256

            79b952a45b7ccf6d11937c23d1a8e9af81a64e7bc88dd5d10e6b5c73151f416b

            SHA512

            bf0425419c4b849fc0da36d6b140a2c295a4ce6fb06323ea83c02c018de6aebaad10a8fa69cfa3eedc38d354ed4502b38c8ac6b2de11bde0ff580ee34a6e285c

          • memory/1108-82-0x0000000007350000-0x0000000007364000-memory.dmp

            Filesize

            80KB

          • memory/1108-21-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/1108-83-0x0000000007450000-0x000000000746A000-memory.dmp

            Filesize

            104KB

          • memory/1108-50-0x0000000005DE0000-0x0000000005DFE000-memory.dmp

            Filesize

            120KB

          • memory/1108-80-0x0000000007310000-0x0000000007321000-memory.dmp

            Filesize

            68KB

          • memory/1108-79-0x0000000007390000-0x0000000007426000-memory.dmp

            Filesize

            600KB

          • memory/1108-78-0x0000000007180000-0x000000000718A000-memory.dmp

            Filesize

            40KB

          • memory/1108-76-0x0000000007750000-0x0000000007DCA000-memory.dmp

            Filesize

            6.5MB

          • memory/1108-54-0x0000000070760000-0x00000000707AC000-memory.dmp

            Filesize

            304KB

          • memory/1108-17-0x00000000024C0000-0x00000000024F6000-memory.dmp

            Filesize

            216KB

          • memory/1108-18-0x0000000004F50000-0x0000000005578000-memory.dmp

            Filesize

            6.2MB

          • memory/1108-19-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/1108-20-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/1108-84-0x0000000007430000-0x0000000007438000-memory.dmp

            Filesize

            32KB

          • memory/1108-22-0x0000000005580000-0x00000000055A2000-memory.dmp

            Filesize

            136KB

          • memory/1108-24-0x0000000005780000-0x00000000057E6000-memory.dmp

            Filesize

            408KB

          • memory/1108-91-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/1108-51-0x0000000005E20000-0x0000000005E6C000-memory.dmp

            Filesize

            304KB

          • memory/1108-23-0x0000000005660000-0x00000000056C6000-memory.dmp

            Filesize

            408KB

          • memory/1108-35-0x00000000057F0000-0x0000000005B44000-memory.dmp

            Filesize

            3.3MB

          • memory/1108-75-0x0000000006FF0000-0x0000000007093000-memory.dmp

            Filesize

            652KB

          • memory/1108-65-0x0000000006FD0000-0x0000000006FEE000-memory.dmp

            Filesize

            120KB

          • memory/1108-53-0x00000000063B0000-0x00000000063E2000-memory.dmp

            Filesize

            200KB

          • memory/3824-48-0x0000000000400000-0x0000000000442000-memory.dmp

            Filesize

            264KB

          • memory/3824-92-0x00000000072F0000-0x0000000007340000-memory.dmp

            Filesize

            320KB

          • memory/3944-37-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/3944-77-0x0000000007180000-0x000000000719A000-memory.dmp

            Filesize

            104KB

          • memory/3944-36-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/3944-47-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/3944-55-0x0000000070760000-0x00000000707AC000-memory.dmp

            Filesize

            304KB

          • memory/3944-90-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/3944-81-0x00000000073B0000-0x00000000073BE000-memory.dmp

            Filesize

            56KB

          • memory/4672-8-0x00000000056B0000-0x00000000056C2000-memory.dmp

            Filesize

            72KB

          • memory/4672-5-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/4672-10-0x0000000006380000-0x000000000638C000-memory.dmp

            Filesize

            48KB

          • memory/4672-9-0x0000000006370000-0x0000000006378000-memory.dmp

            Filesize

            32KB

          • memory/4672-52-0x0000000075270000-0x0000000075A20000-memory.dmp

            Filesize

            7.7MB

          • memory/4672-12-0x0000000009360000-0x00000000093E4000-memory.dmp

            Filesize

            528KB

          • memory/4672-7-0x0000000006390000-0x00000000068BC000-memory.dmp

            Filesize

            5.2MB

          • memory/4672-11-0x0000000009010000-0x00000000090A4000-memory.dmp

            Filesize

            592KB

          • memory/4672-6-0x00000000055C0000-0x000000000565C000-memory.dmp

            Filesize

            624KB

          • memory/4672-4-0x00000000052C0000-0x00000000052CA000-memory.dmp

            Filesize

            40KB

          • memory/4672-3-0x0000000005300000-0x0000000005392000-memory.dmp

            Filesize

            584KB

          • memory/4672-2-0x00000000058B0000-0x0000000005E54000-memory.dmp

            Filesize

            5.6MB

          • memory/4672-0-0x000000007527E000-0x000000007527F000-memory.dmp

            Filesize

            4KB

          • memory/4672-1-0x00000000007C0000-0x00000000008B6000-memory.dmp

            Filesize

            984KB