Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 03:43

General

  • Target

    PO00211.exe

  • Size

    670KB

  • MD5

    2b12a266317f002c205011fa1958072c

  • SHA1

    07e6859611698f37aa9c4011f76907aafe524218

  • SHA256

    dff297acb567f990471dca2871adee15229e572c35fef5fd20eb9a1428946c04

  • SHA512

    444f0444202f3c4c67cdf3deeb479233041edd4d7a16c0240b729173b5781322278d21abb9e55eb09668795e1121a77ea9ffd11735823a08b109f064969f67b8

  • SSDEEP

    12288:J0FJzi8LkpEaAxx1Qy0+9+WTehgXkWP3DdFsOFHplgCIQlHzWH4jdmeO1W+TLTuU:KT2jE3LS7+99fXxP3DdFnFJ2CIQBgcdO

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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO00211.exe
    "C:\Users\Admin\AppData\Local\Temp\PO00211.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2216
    • 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\PO00211.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3044
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eeOuEr.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2880
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eeOuEr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp400C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2648
    • C:\Users\Admin\AppData\Local\Temp\PO00211.exe
      "C:\Users\Admin\AppData\Local\Temp\PO00211.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp400C.tmp

    Filesize

    1KB

    MD5

    e809d2cda61370e84576c87056c7fd36

    SHA1

    e945f6bb3ef0ac7be218cc0e17775df94f529315

    SHA256

    a754014c45ba7c7db38faf214a41200758dbe8267b92047961156569ba68be94

    SHA512

    0bb8c49940d5cc15b0d11c75f444f72ea08dbd72a569c1fc1ed2894d2eb60298ad6e45feb103c2d02884e30a7a7a5fab39c0d2c53ad81b41a117d25d6d81729e

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    62dd5436ad3b4477b6aaa5418bde097f

    SHA1

    87658353c8b4f2dda369a7ea5477176b67ffbf7f

    SHA256

    34a14c22394c61f8d9091a0a7da3a68ffe05f2caf1571bc1c38c1870207035ba

    SHA512

    2e58935637d78e42e4e3875e919ac8587509aabd3b70fc7e5ac8153212ac8cfb236ee7b78b7a7289bdcfaf6540041409d1e3ca99cb6fe48e0f311af47415479f

  • memory/2216-31-0x0000000074B00000-0x00000000751EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2216-1-0x0000000000EC0000-0x0000000000F6A000-memory.dmp

    Filesize

    680KB

  • memory/2216-2-0x0000000074B00000-0x00000000751EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2216-3-0x0000000000460000-0x000000000047A000-memory.dmp

    Filesize

    104KB

  • memory/2216-4-0x0000000000410000-0x0000000000420000-memory.dmp

    Filesize

    64KB

  • memory/2216-5-0x00000000052E0000-0x0000000005364000-memory.dmp

    Filesize

    528KB

  • memory/2216-0-0x0000000074B0E000-0x0000000074B0F000-memory.dmp

    Filesize

    4KB

  • memory/2436-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-24-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-27-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2436-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB