Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12/12/2022, 12:45

General

  • Target
    PAYMENT NOTICE.Scr.exe
  • Size 788KB
  • Sample221212-py4lcsbd26
  • SHA256 5f5f98c19f889e41a9a73b991ee4aedca90055f848a84b1441ae45be8d380f6d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    work-toolz.click

  • Port

    587

  • Password

    3HLkst~=QzD3

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    work-toolz.click

  • Port

    587

  • Password

    3HLkst~=QzD3

Signatures

  • AgentTesla

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

  • Executes dropped EXE 2 IoCs
  • 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
  • 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAYMENT NOTICE.Scr.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT NOTICE.Scr.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Users\Admin\AppData\LocalNePRdcnFKm.exe
      "C:\Users\Admin\AppData\LocalNePRdcnFKm.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1476
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\LocalNePRdcnFKm.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:616
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mrYHLrofvW.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1200
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mrYHLrofvW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEC72.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1776
      • C:\Users\Admin\AppData\LocalNePRdcnFKm.exe
        "C:\Users\Admin\AppData\LocalNePRdcnFKm.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1940
    • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\LocalRguquifM_i.pdf"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:544

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        LocalNePRdcnFKm.exe

        • Path C:\Users\Admin\AppData\LocalNePRdcnFKm.exe
        • Size 746KB
        • SHA256 29e98316caac2dec3ca75404f4abe20a0f8a4ae82b9560e6db20c4ec76b6425b
        • MD5 SHA1 SHA512 SSDEEP

        LocalNePRdcnFKm.exe

        • Path C:\Users\Admin\AppData\LocalNePRdcnFKm.exe
        • Size 746KB
        • SHA256 29e98316caac2dec3ca75404f4abe20a0f8a4ae82b9560e6db20c4ec76b6425b
        • MD5 SHA1 SHA512 SSDEEP

        LocalNePRdcnFKm.exe

        • Path C:\Users\Admin\AppData\LocalNePRdcnFKm.exe
        • Size 746KB
        • SHA256 29e98316caac2dec3ca75404f4abe20a0f8a4ae82b9560e6db20c4ec76b6425b
        • MD5 SHA1 SHA512 SSDEEP

        LocalRguquifM_i.pdf

        • Path C:\Users\Admin\AppData\LocalRguquifM_i.pdf
        • Size 4KB
        • SHA256 bc723b24c022a75063ce07bbb96bd8182621c8aea4a37cd3b6c02650b24ed78c
        • MD5 SHA1 SHA512 SSDEEP

        tmpEC72.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmpEC72.tmp
        • Size 1KB
        • SHA256 891c2ab5a6dac32a0cf4ce00973212245d97046806d9158deacb8f85fe93111c
        • MD5 SHA1 SHA512

        d93f411851d7c929.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
        • Size 7KB
        • SHA256 ea4740be905e0ddc0c48a145fd41ca0b852b3a6f5664282a740b559f610379e4
        • MD5 SHA1 SHA512 SSDEEP

        memory/544-60-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

        memory/616-88-0x000000006CA30000-0x000000006CFDB000-memory.dmp

        memory/616-91-0x000000006CA30000-0x000000006CFDB000-memory.dmp

        memory/1200-90-0x000000006CA30000-0x000000006CFDB000-memory.dmp

        memory/1200-89-0x000000006CA30000-0x000000006CFDB000-memory.dmp

        memory/1476-66-0x0000000005830000-0x00000000058B2000-memory.dmp

        memory/1476-61-0x0000000000080000-0x0000000000140000-memory.dmp

        memory/1476-65-0x00000000003D0000-0x00000000003DE000-memory.dmp

        memory/1476-74-0x00000000058B0000-0x00000000058FA000-memory.dmp

        memory/1476-64-0x00000000003C0000-0x00000000003D6000-memory.dmp

        memory/1940-79-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-80-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-78-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-86-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-84-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-76-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1940-75-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1992-54-0x000007FEF4640000-0x000007FEF5063000-memory.dmp

        memory/1992-55-0x000007FEFC001000-0x000007FEFC003000-memory.dmp