Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 02:31

General

  • Target

    e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe

  • Size

    690KB

  • MD5

    bfc94099f30c1651fbe6eff2554c7bc6

  • SHA1

    2b1f0234cd7a0376ad69db4cc23671ad1eed7aad

  • SHA256

    e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd

  • SHA512

    05709d3d3828d7e55a9909f7c8582461174ff1160bbcd17578f6b8aba47bb9a23ffac5305ac3c2d4df6fd0d49df2ed233a29b8b6b31eeeb2f475f320d928d36f

  • SSDEEP

    12288:OKzi8LkpEaV3urpXm4zbOSrZeiYJlaD38DqBOQgO+SeC8yITUZ7quWXaeukR:OK2jECurpLbDteiGlIjPH6KT1u

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.

  • 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).

  • 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 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe
    "C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2248
    • 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\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2772
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\pilzdrWAu.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2528
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pilzdrWAu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAFFE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2520
    • C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe
      "C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe"
      2⤵
        PID:2928
      • C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe
        "C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe"
        2⤵
          PID:3052
        • C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe
          "C:\Users\Admin\AppData\Local\Temp\e75eb158aae9d78f3b3a66062e6343784e19589240429ecde67adb5744c949dd.exe"
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3056

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Command and Scripting Interpreter

      1
      T1059

      PowerShell

      1
      T1059.001

      Scheduled Task/Job

      1
      T1053

      Persistence

      Scheduled Task/Job

      1
      T1053

      Privilege Escalation

      Scheduled Task/Job

      1
      T1053

      Credential Access

      Unsecured Credentials

      4
      T1552

      Credentials In Files

      3
      T1552.001

      Credentials in Registry

      1
      T1552.002

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      4
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpAFFE.tmp
        Filesize

        1KB

        MD5

        c3955ee8537b6c53576367e7db5f10e3

        SHA1

        20f910f853789b4ec5dddfdfe7f95804ec242cd7

        SHA256

        91fcb4d43190214be021b8c16c8480fc6e24a8d4b627ef071c841773c6d52a66

        SHA512

        6e6c74d596ef794be81a215df613c532c710259969996550f4fe7ccccd2d0467b761f6d6173e9631d597257e24d07736c616e4892d46ff2b96528ff18e278068

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\70IN0DBK6YRA94NFGSCD.temp
        Filesize

        7KB

        MD5

        a6cf3e598b674ef3b47c48d951083125

        SHA1

        c0ae5037cc56becc54f1288be403d7f25fc54afe

        SHA256

        c041fe09d0dcc893565fb37de58062402a0fd3050818cb5284472964865dbcd3

        SHA512

        3cd9d548680a800d818c21e54cb9f7d436cc9a55f1b83d03f7863d66e8e6f1e6490c82636b33a015dfe1b6fe4300af5622e5af64ac8c0462d174398a7e25ceac

      • memory/2248-4-0x00000000002D0000-0x00000000002E0000-memory.dmp
        Filesize

        64KB

      • memory/2248-3-0x0000000000310000-0x000000000032A000-memory.dmp
        Filesize

        104KB

      • memory/2248-0-0x0000000073FDE000-0x0000000073FDF000-memory.dmp
        Filesize

        4KB

      • memory/2248-5-0x0000000005320000-0x00000000053A4000-memory.dmp
        Filesize

        528KB

      • memory/2248-6-0x0000000073FDE000-0x0000000073FDF000-memory.dmp
        Filesize

        4KB

      • memory/2248-7-0x0000000073FD0000-0x00000000746BE000-memory.dmp
        Filesize

        6.9MB

      • memory/2248-2-0x0000000073FD0000-0x00000000746BE000-memory.dmp
        Filesize

        6.9MB

      • memory/2248-1-0x0000000000150000-0x0000000000200000-memory.dmp
        Filesize

        704KB

      • memory/2248-33-0x0000000073FD0000-0x00000000746BE000-memory.dmp
        Filesize

        6.9MB

      • memory/3056-30-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-32-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-29-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/3056-24-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-20-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-26-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB

      • memory/3056-22-0x0000000000400000-0x0000000000442000-memory.dmp
        Filesize

        264KB