Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27-04-2024 01:29

General

  • Target

    Statement of Account PDF.exe

  • Size

    693KB

  • MD5

    8db4915ba4e6bb27cb249554a18a9f4c

  • SHA1

    fd3e06212f9da365c2106dcd808caf291ccb3a2a

  • SHA256

    470e7bcb766a436b50d28e362621b59467b6e6aa4146b467f4175a8b5c9eaa04

  • SHA512

    ec42a9de73e4e79911cf870fd3d41392b1dc5726ceb4660ba8d7bc4bbedee9a3e111cb5426b3d3797c8517cebb2bdbb4e7d3a96590ee14f2bb89b4a3e286b50c

  • SSDEEP

    12288:lYIPXj/PqfEKyBVaLXKfjJUKJepONj9BtjWVpFZt/DAjB4Bd:lYIPesVaLXKnJeAj9BtqzFHiWX

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs
  • Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 5 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs
  • Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs
  • 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.

  • 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).

  • Program crash 1 IoCs
  • 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 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Statement of Account PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Statement of Account PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1224
    • 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\Statement of Account PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2580
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gDdsxauPhk.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gDdsxauPhk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC5DE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2692
    • C:\Users\Admin\AppData\Local\Temp\Statement of Account PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Statement of Account PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2388
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1224 -s 1048
      2⤵
      • Program crash
      PID:2836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC5DE.tmp

    Filesize

    1KB

    MD5

    262c2923bd4a7a4481d03769340bba4d

    SHA1

    cc801179d80e2edb68533d2f64f838ae39f2aa84

    SHA256

    e857b5ecf8d8c19d479d51e59a215a7e0982517f0f9e791461b8b388fa780baf

    SHA512

    999788312919580117762475e6d338794427925a062d0269e29f9895498d03ac0ea1bbde78b6e812577f84f19d11d19499b4dfe60c04aab0670f4d35206b64c5

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\YTNP1O5WS8OAXZRGSFH3.temp

    Filesize

    7KB

    MD5

    fcd2771a4bd269c012210563cb0d866e

    SHA1

    0c1ceb07fab2fa5edfdf971c2a101931af6e8998

    SHA256

    2572b011a316c1b9c729cd3cf3ea741c9ed585c8f1314d9d39ec91ed8a15545f

    SHA512

    4191041c9ea9008dbd88224ae988f520d9e5be8babeb38b93d52ea43bf03249a182e66ce762f4cb311419c3b2f7a7f5ca136df3f4b0d95ce61085414d0c33f8f

  • memory/1224-30-0x0000000074B20000-0x000000007520E000-memory.dmp

    Filesize

    6.9MB

  • memory/1224-1-0x0000000074B20000-0x000000007520E000-memory.dmp

    Filesize

    6.9MB

  • memory/1224-2-0x0000000004950000-0x0000000004990000-memory.dmp

    Filesize

    256KB

  • memory/1224-3-0x0000000000440000-0x0000000000460000-memory.dmp

    Filesize

    128KB

  • memory/1224-4-0x0000000000530000-0x0000000000544000-memory.dmp

    Filesize

    80KB

  • memory/1224-5-0x0000000005F00000-0x0000000005F84000-memory.dmp

    Filesize

    528KB

  • memory/1224-0-0x0000000000340000-0x00000000003F4000-memory.dmp

    Filesize

    720KB

  • memory/2388-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-27-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2388-24-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2388-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB