Analysis

  • max time kernel
    58s
  • max time network
    61s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2023 07:24

General

  • Target

    522d2ac90778154b783b8c367901d0dc994e849b.exe

  • Size

    860KB

  • MD5

    60560661bb1ebaf6358a09997fd68c61

  • SHA1

    522d2ac90778154b783b8c367901d0dc994e849b

  • SHA256

    43a0be7895e81ab00df511b6e247641f46291a794c103111e602ff1401ea0324

  • SHA512

    da3e517bace9ebb6c770b0ab03660a56811ba4aba3e83ab21ed1d99b5f99f18082678ddd2887c3a0c644c27511e6e523925ad90bb649deac48c3a66d5c114f61

  • SSDEEP

    12288:bjSWEpeRUrakx5Q2t4rOa/J8OXVbeV2b2WtOez1Gi2Dg1Pjqn0Ta4spUT22tr:bApyUh8Oa/zb2WZz1Giwgbq0r9

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5590596148:AAFELAezvK26mOp3KWIpAgxEVzQMQ56n6zg/

Signatures

  • AgentTesla

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

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\522d2ac90778154b783b8c367901d0dc994e849b.exe
    "C:\Users\Admin\AppData\Local\Temp\522d2ac90778154b783b8c367901d0dc994e849b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1032
    • 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\522d2ac90778154b783b8c367901d0dc994e849b.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1776
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rYfUNaSeLEBFy.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:944
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rYfUNaSeLEBFy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88B1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1152
    • C:\Users\Admin\AppData\Local\Temp\522d2ac90778154b783b8c367901d0dc994e849b.exe
      "C:\Users\Admin\AppData\Local\Temp\522d2ac90778154b783b8c367901d0dc994e849b.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:860

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp88B1.tmp

    Filesize

    1KB

    MD5

    1517ba8a404577e00ab0238360bf72a8

    SHA1

    5b8aed8e6ce1df8f155a191e42e3c93596ddd74a

    SHA256

    27f2014749e728a4c280a7219ede167dec35632ec1340b563ecd347abed0e83c

    SHA512

    58a8fb8ca6cc4335dd21c30dc35b86bd9f673ee4f973e71d55f98c78f231d8fd7fb0b2d626bd322c0ee14bd76cdb7ce3f1a1db803afb668d8d3e0e545d7589ec

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

    Filesize

    7KB

    MD5

    dc3c1d37313b572755d9cf6fdde21b61

    SHA1

    a17881a673c15328cef1fe359c27122bce324a7c

    SHA256

    da7cf97803f2caf4e6e9c8b5dc667674a7e9c71806539e188c445d2272471732

    SHA512

    9b7e67b606cc648d1c934676f0e44f62cc0cd7862af7b4ced1f111b4701d1152ae33bc809474f65e019b878146bad1e5b6a9e44e79611316e5fd483b5fedc2c5

  • memory/860-77-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-67-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-75-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-72-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-71-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-68-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/860-70-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/944-80-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB

  • memory/944-81-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB

  • memory/1032-66-0x0000000005CB0000-0x0000000005CF6000-memory.dmp

    Filesize

    280KB

  • memory/1032-54-0x00000000011C0000-0x000000000129C000-memory.dmp

    Filesize

    880KB

  • memory/1032-58-0x0000000005B00000-0x0000000005B80000-memory.dmp

    Filesize

    512KB

  • memory/1032-57-0x0000000000730000-0x000000000073A000-memory.dmp

    Filesize

    40KB

  • memory/1032-56-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/1032-55-0x0000000075501000-0x0000000075503000-memory.dmp

    Filesize

    8KB

  • memory/1776-79-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB

  • memory/1776-82-0x000000006E820000-0x000000006EDCB000-memory.dmp

    Filesize

    5.7MB