Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/07/2023, 11:32

General

  • Target
    PO 345678.exe
  • Size 655KB
  • Sample230711-nnad4agg29
  • SHA256 cb2cbedac34829b45dcc25735d79fb332bed3098741a7ca8a7954de5ceb894ec
  • MD5 SHA1 SHA512 SSDEEP

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 2 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 345678.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 345678.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\szBqpRdsKFXPtk.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3196
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\szBqpRdsKFXPtk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp22E5.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4448
    • C:\Users\Admin\AppData\Local\Temp\PO 345678.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 345678.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1868

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        PO 345678.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO 345678.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_cvwx2dos.u2n.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cvwx2dos.u2n.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        tmp22E5.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp22E5.tmp
        • Size 1KB
        • SHA256 3e6d7c721393c05fd47f70a172c6d404052b1137ca94fb128baf7d70e03779ba
        • MD5 SHA1 SHA512

        memory/1868-150-0x0000000005700000-0x0000000005766000-memory.dmp

        memory/1868-192-0x0000000005650000-0x0000000005660000-memory.dmp

        memory/1868-146-0x0000000000400000-0x0000000000430000-memory.dmp

        memory/1868-186-0x0000000007070000-0x0000000007232000-memory.dmp

        memory/1868-185-0x0000000006E50000-0x0000000006EA0000-memory.dmp

        memory/1868-153-0x0000000005650000-0x0000000005660000-memory.dmp

        memory/2308-137-0x0000000004D30000-0x0000000004D3A000-memory.dmp

        memory/2308-138-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

        memory/2308-139-0x0000000008300000-0x000000000839C000-memory.dmp

        memory/2308-136-0x0000000004FB0000-0x0000000004FC0000-memory.dmp

        memory/2308-135-0x0000000004D90000-0x0000000004E22000-memory.dmp

        memory/2308-133-0x00000000002D0000-0x0000000000378000-memory.dmp

        memory/2308-134-0x0000000005340000-0x00000000058E4000-memory.dmp

        memory/3196-159-0x0000000005250000-0x0000000005260000-memory.dmp

        memory/3196-181-0x00000000079C0000-0x00000000079DA000-memory.dmp

        memory/3196-160-0x0000000005250000-0x0000000005260000-memory.dmp

        memory/3196-165-0x00000000066C0000-0x00000000066DE000-memory.dmp

        memory/3196-166-0x0000000005250000-0x0000000005260000-memory.dmp

        memory/3196-167-0x00000000076B0000-0x00000000076E2000-memory.dmp

        memory/3196-168-0x00000000701B0000-0x00000000701FC000-memory.dmp

        memory/3196-178-0x0000000006C50000-0x0000000006C6E000-memory.dmp

        memory/3196-180-0x0000000008020000-0x000000000869A000-memory.dmp

        memory/3196-152-0x0000000005810000-0x0000000005876000-memory.dmp

        memory/3196-182-0x000000007EE80000-0x000000007EE90000-memory.dmp

        memory/3196-183-0x0000000007A30000-0x0000000007A3A000-memory.dmp

        memory/3196-184-0x0000000007C40000-0x0000000007CD6000-memory.dmp

        memory/3196-151-0x00000000055F0000-0x0000000005612000-memory.dmp

        memory/3196-149-0x0000000005890000-0x0000000005EB8000-memory.dmp

        memory/3196-187-0x0000000007BF0000-0x0000000007BFE000-memory.dmp

        memory/3196-188-0x0000000007D00000-0x0000000007D1A000-memory.dmp

        memory/3196-189-0x0000000007CE0000-0x0000000007CE8000-memory.dmp

        memory/3196-145-0x0000000005110000-0x0000000005146000-memory.dmp