Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    12-09-2024 18:16

General

  • Target

    documento de envio para fatura nº 52-FK-24.pdf.scr

  • Size

    660KB

  • MD5

    2f259ff8ae0f320abb13417929e10500

  • SHA1

    ec02c62d9850589093716dbfb645be6e9aa35b5f

  • SHA256

    f207f360f60925ba6e949a315ac35e01ef7190993146fdad3aa1d27b2c9bb776

  • SHA512

    ee4e5a1a9a08cf6aeab8eefe64b0051292614ac07e856d987c99ef1d4836ad6c0a31386b45b319aa56775e0d9e1d25928cf9cadce43c380af8e9e402e9c6bb99

  • SSDEEP

    12288:7Df8n+GNns0+nZJgcC4eOcth7ZqUlmmN0KHiZ/75S+pO6wtPXHuhkR:Q+ib+Tgvh7UuRCZDNpQ+8

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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 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 3 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\documento de envio para fatura nº 52-FK-24.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\documento de envio para fatura nº 52-FK-24.pdf.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:620
    • 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\documento de envio para fatura nº 52-FK-24.pdf.scr"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\PWdnQUQIF.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2460
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PWdnQUQIF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD0F5.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2700
    • C:\Users\Admin\AppData\Local\Temp\documento de envio para fatura nº 52-FK-24.pdf.scr
      "C:\Users\Admin\AppData\Local\Temp\documento de envio para fatura nº 52-FK-24.pdf.scr"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD0F5.tmp

    Filesize

    1KB

    MD5

    76c94de05cc2f86366f50af690f7ac96

    SHA1

    5c345b4cc234ee0d38ffa14bcf06b9791ad7f79b

    SHA256

    cc19e0f871f65e89cff487ed4beaf605664d52c87ea2a37d7bcc1610845876e5

    SHA512

    81f493cf2e3d8539ba9e20928d045f8577a5461b9f7dfcb6549c5e58e3c3954ab88cdfd19417792855ce540d0c1990c6cd55e13b555b13a60dace8e395c8caa6

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

    Filesize

    7KB

    MD5

    4720ca49d75c507f2a49cc06b226ab0e

    SHA1

    686dfb37851ef6146967d665b2dfe9152196edf6

    SHA256

    8c8992a90a6d32aa6bced22094bfc7df9beabb2cc6919636b8d301fd1693601f

    SHA512

    7053b3c0a443b0f6537d3fd3362e0ce38e91bf16dfebe89e5aafb64073db6fce424ea285055a05295722347e8591bb723366493a7257e98728d4cc14142d6818

  • memory/620-4-0x000000007427E000-0x000000007427F000-memory.dmp

    Filesize

    4KB

  • memory/620-32-0x0000000074270000-0x000000007495E000-memory.dmp

    Filesize

    6.9MB

  • memory/620-0-0x000000007427E000-0x000000007427F000-memory.dmp

    Filesize

    4KB

  • memory/620-5-0x0000000074270000-0x000000007495E000-memory.dmp

    Filesize

    6.9MB

  • memory/620-6-0x00000000052D0000-0x0000000005354000-memory.dmp

    Filesize

    528KB

  • memory/620-2-0x0000000074270000-0x000000007495E000-memory.dmp

    Filesize

    6.9MB

  • memory/620-1-0x0000000000800000-0x00000000008A8000-memory.dmp

    Filesize

    672KB

  • memory/620-3-0x0000000000460000-0x0000000000470000-memory.dmp

    Filesize

    64KB

  • memory/2708-29-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-25-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-23-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-21-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2708-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2708-31-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB