Analysis

  • max time kernel
    125s
  • max time network
    51s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2023 08:31

General

  • Target

    PO.exe

  • Size

    740KB

  • MD5

    b8544d8facfb793edab9d38921933728

  • SHA1

    5ab5b9c19dd1cf189b49be90233e32dacd32e9e6

  • SHA256

    a81e919be20c26807dc7d775ccdc026d4a9daf0116661dff5e3fbdaf29effe19

  • SHA512

    f59aee69180a55f43c35ee32cb0a3a4b58994fd25a195d7557719a0f7b6c482fe561fd13a239772e32a04512391ffaed520ab85399eb0dbff75356585e88ac6f

  • SSDEEP

    12288:DWVretW8G34/uK45+po2ys7l/yOKRXDGz5aTbFQG1uJ073ZCeg/:4x34/up+pJyoaOMTGz5atQZJ0r

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO.exe
    "C:\Users\Admin\AppData\Local\Temp\PO.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3276
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WLJIUp.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4640
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WLJIUp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp83B7.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4268
    • C:\Users\Admin\AppData\Local\Temp\PO.exe
      "C:\Users\Admin\AppData\Local\Temp\PO.exe"
      2⤵
        PID:872
      • C:\Users\Admin\AppData\Local\Temp\PO.exe
        "C:\Users\Admin\AppData\Local\Temp\PO.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:3384

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_au41wgia.1nd.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp83B7.tmp

      Filesize

      1KB

      MD5

      723100d15c055b6ece47d43bacc33a8a

      SHA1

      46f8f549640dd625f0cf423ea33922894e3e067f

      SHA256

      9012d9038d83d43189a3e1f0fab8187def1eb9559a3e49b26d6e1b66b9ae740e

      SHA512

      c2daf5358b3a78fd02ba85d5c30b9fda1d4d0226c9b6563f1dc1a09e858c1192772f570fc02cdac39ff7a706b71b61b77b5f81b136288c0c02719230c619f4b7

    • memory/3276-6-0x0000000006D50000-0x0000000006D68000-memory.dmp

      Filesize

      96KB

    • memory/3276-4-0x00000000056E0000-0x00000000056F0000-memory.dmp

      Filesize

      64KB

    • memory/3276-2-0x0000000005D10000-0x00000000062B4000-memory.dmp

      Filesize

      5.6MB

    • memory/3276-5-0x0000000005730000-0x000000000573A000-memory.dmp

      Filesize

      40KB

    • memory/3276-28-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/3276-7-0x00000000068E0000-0x00000000068E8000-memory.dmp

      Filesize

      32KB

    • memory/3276-8-0x00000000068F0000-0x00000000068FA000-memory.dmp

      Filesize

      40KB

    • memory/3276-9-0x0000000006B90000-0x0000000006BFA000-memory.dmp

      Filesize

      424KB

    • memory/3276-23-0x00000000056E0000-0x00000000056F0000-memory.dmp

      Filesize

      64KB

    • memory/3276-0-0x0000000000C80000-0x0000000000D40000-memory.dmp

      Filesize

      768KB

    • memory/3276-1-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/3276-3-0x0000000005760000-0x00000000057F2000-memory.dmp

      Filesize

      584KB

    • memory/3276-10-0x00000000069C0000-0x0000000006A5C000-memory.dmp

      Filesize

      624KB

    • memory/3276-21-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/3384-73-0x0000000006E50000-0x0000000007012000-memory.dmp

      Filesize

      1.8MB

    • memory/3384-20-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/3384-72-0x0000000006AF0000-0x0000000006B40000-memory.dmp

      Filesize

      320KB

    • memory/3384-74-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/3384-26-0x00000000050D0000-0x0000000005136000-memory.dmp

      Filesize

      408KB

    • memory/3384-27-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/3384-30-0x0000000005210000-0x0000000005220000-memory.dmp

      Filesize

      64KB

    • memory/3384-75-0x0000000005210000-0x0000000005220000-memory.dmp

      Filesize

      64KB

    • memory/4640-15-0x0000000004BB0000-0x0000000004BE6000-memory.dmp

      Filesize

      216KB

    • memory/4640-59-0x0000000007AF0000-0x000000000816A000-memory.dmp

      Filesize

      6.5MB

    • memory/4640-25-0x00000000051C0000-0x00000000051E2000-memory.dmp

      Filesize

      136KB

    • memory/4640-40-0x0000000005BB0000-0x0000000005F04000-memory.dmp

      Filesize

      3.3MB

    • memory/4640-41-0x0000000006190000-0x00000000061AE000-memory.dmp

      Filesize

      120KB

    • memory/4640-42-0x0000000006390000-0x00000000063DC000-memory.dmp

      Filesize

      304KB

    • memory/4640-43-0x000000007F3A0000-0x000000007F3B0000-memory.dmp

      Filesize

      64KB

    • memory/4640-44-0x0000000006780000-0x00000000067B2000-memory.dmp

      Filesize

      200KB

    • memory/4640-45-0x00000000717F0000-0x000000007183C000-memory.dmp

      Filesize

      304KB

    • memory/4640-46-0x0000000004CA0000-0x0000000004CB0000-memory.dmp

      Filesize

      64KB

    • memory/4640-57-0x0000000006750000-0x000000000676E000-memory.dmp

      Filesize

      120KB

    • memory/4640-52-0x0000000004CA0000-0x0000000004CB0000-memory.dmp

      Filesize

      64KB

    • memory/4640-58-0x0000000007390000-0x0000000007433000-memory.dmp

      Filesize

      652KB

    • memory/4640-29-0x0000000005AC0000-0x0000000005B26000-memory.dmp

      Filesize

      408KB

    • memory/4640-60-0x00000000074B0000-0x00000000074CA000-memory.dmp

      Filesize

      104KB

    • memory/4640-61-0x0000000007520000-0x000000000752A000-memory.dmp

      Filesize

      40KB

    • memory/4640-62-0x0000000007730000-0x00000000077C6000-memory.dmp

      Filesize

      600KB

    • memory/4640-63-0x00000000076B0000-0x00000000076C1000-memory.dmp

      Filesize

      68KB

    • memory/4640-64-0x00000000076E0000-0x00000000076EE000-memory.dmp

      Filesize

      56KB

    • memory/4640-65-0x00000000076F0000-0x0000000007704000-memory.dmp

      Filesize

      80KB

    • memory/4640-66-0x00000000077F0000-0x000000000780A000-memory.dmp

      Filesize

      104KB

    • memory/4640-67-0x00000000077D0000-0x00000000077D8000-memory.dmp

      Filesize

      32KB

    • memory/4640-70-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB

    • memory/4640-18-0x00000000052E0000-0x0000000005908000-memory.dmp

      Filesize

      6.2MB

    • memory/4640-22-0x0000000004CA0000-0x0000000004CB0000-memory.dmp

      Filesize

      64KB

    • memory/4640-19-0x0000000004CA0000-0x0000000004CB0000-memory.dmp

      Filesize

      64KB

    • memory/4640-17-0x00000000753A0000-0x0000000075B50000-memory.dmp

      Filesize

      7.7MB