Analysis

  • max time kernel
    147s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    26-10-2021 04:17

General

  • Target

    New_Order_PO#960780_MT_Quote.exe

  • Size

    373KB

  • MD5

    42ca495d2da951c33eb97eb1b5dca02c

  • SHA1

    bb76ea2952bc8706df0f7ef51e336adce40500f5

  • SHA256

    daa3b0d4f7fe78a4525edd94a77767330b6a37c23ae0a576ce5b53e7fb21717c

  • SHA512

    6fd9c8720ba4da1ff54f46f172516f6af1af275799ab2cedd747387d2c7ee3e92f7053739858b76c61afca56f036d23a67b22a2518ae684eccb98f7097b815d2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.karanex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Oi&-tmhj@d5v

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New_Order_PO#960780_MT_Quote.exe
    "C:\Users\Admin\AppData\Local\Temp\New_Order_PO#960780_MT_Quote.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:912
    • 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\New_Order_PO#960780_MT_Quote.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:848
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cCuwSjrQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp890D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:792
    • C:\Users\Admin\AppData\Local\Temp\New_Order_PO#960780_MT_Quote.exe
      "C:\Users\Admin\AppData\Local\Temp\New_Order_PO#960780_MT_Quote.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/792-64-0x0000000000000000-mapping.dmp

  • memory/848-73-0x0000000002390000-0x0000000002FDA000-memory.dmp

    Filesize

    12.3MB

  • memory/848-62-0x0000000000000000-mapping.dmp

  • memory/848-76-0x0000000002390000-0x0000000002FDA000-memory.dmp

    Filesize

    12.3MB

  • memory/848-75-0x0000000002390000-0x0000000002FDA000-memory.dmp

    Filesize

    12.3MB

  • memory/912-57-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

    Filesize

    8KB

  • memory/912-58-0x0000000004A00000-0x0000000004A01000-memory.dmp

    Filesize

    4KB

  • memory/912-59-0x000000007EF40000-0x000000007EF41000-memory.dmp

    Filesize

    4KB

  • memory/912-60-0x0000000004040000-0x0000000004047000-memory.dmp

    Filesize

    28KB

  • memory/912-61-0x0000000005210000-0x0000000005268000-memory.dmp

    Filesize

    352KB

  • memory/912-55-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/1708-67-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-70-0x000000000043789E-mapping.dmp

  • memory/1708-69-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-71-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-74-0x0000000002270000-0x0000000002271000-memory.dmp

    Filesize

    4KB

  • memory/1708-68-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-66-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-65-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1708-77-0x0000000002271000-0x0000000002272000-memory.dmp

    Filesize

    4KB