Analysis

  • max time kernel
    52s
  • max time network
    111s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2024 07:06

General

  • Target

    PO Invoice XJ210821Q.PDF.scr.exe

  • Size

    674KB

  • MD5

    b93e5d5b8d6e25ea9107769128334130

  • SHA1

    eaa57f101eec3faaa8ca9a767a07e4cdef35999e

  • SHA256

    4a88d515600a389b686c2674cb10d053720eab06b16bd6c8ad99e06157980283

  • SHA512

    52dfb3178800cf6905ba2e5d4c351a176b3feb531329d5bd7ba3135843dbeacad3814a82eaf3ecdf0e5e47261d7cd3d4043b616a10a2b79c194566fbb33a0657

  • SSDEEP

    12288:AO98bQbs8+iS6RGUfSjWFa9Rh1iEIhjz3DO8ITXykKsSWScPx3ZokkR:ArIJ+7dUfSjWA9Rh14Jy8qZuWbx3Zg

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.libreriagandhi.cl
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    x6p2^m#1#~+O

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 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 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3048
    • 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\PO Invoice XJ210821Q.PDF.scr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2684
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zDowlSskSU.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2788
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zDowlSskSU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA554.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2696
    • C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe"
      2⤵
        PID:1740
      • C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe
        "C:\Users\Admin\AppData\Local\Temp\PO Invoice XJ210821Q.PDF.scr.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:972

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpA554.tmp

      Filesize

      1KB

      MD5

      87945b6f768e1dd5a049a2769c8c765d

      SHA1

      d3a9718a9c1ff58137fb9d6f3c3141083e63c88c

      SHA256

      6e3d1a02b41ff065a8a1a23c43537a0ca467d51589d5565a198e8ffc2bd1c1ab

      SHA512

      89f967351dcb52b557b1624b4b3882d7e6aa3d9c890fbe159b8926f8efedb1438df4ec6039b412899fd723cd47260046df162205c9535da45ba11d1a451feaa3

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\V4Y5QUE0TB7BSJG5QGFV.temp

      Filesize

      7KB

      MD5

      9905922065b7d60ee81f4804191e004a

      SHA1

      f89e8a4ede16ec48d848d82868658316025614b4

      SHA256

      d86759ea98a1809530d24c91399ff1401f62b73588bb7f0a25291a7ac8c10c72

      SHA512

      7edc971a6830ac01bcb064d911c6db5f1be3a91815bb0c75a08904f8ecabbad5662d1b7940e3185992c87cd300f5a24b6ac467092df6045c7d494467edf7a72a

    • memory/972-29-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-24-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-20-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-22-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-26-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/972-30-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/972-31-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/3048-1-0x00000000000F0000-0x000000000019C000-memory.dmp

      Filesize

      688KB

    • memory/3048-2-0x00000000748E0000-0x0000000074FCE000-memory.dmp

      Filesize

      6.9MB

    • memory/3048-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

      Filesize

      4KB

    • memory/3048-7-0x0000000004F80000-0x0000000005004000-memory.dmp

      Filesize

      528KB

    • memory/3048-6-0x00000000748E0000-0x0000000074FCE000-memory.dmp

      Filesize

      6.9MB

    • memory/3048-3-0x00000000748E0000-0x0000000074FCE000-memory.dmp

      Filesize

      6.9MB

    • memory/3048-5-0x00000000748EE000-0x00000000748EF000-memory.dmp

      Filesize

      4KB

    • memory/3048-4-0x00000000004B0000-0x00000000004C2000-memory.dmp

      Filesize

      72KB

    • memory/3048-32-0x00000000748E0000-0x0000000074FCE000-memory.dmp

      Filesize

      6.9MB