Analysis

  • max time kernel
    130s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    18-10-2021 23:52

General

  • Target

    New_Order_PO#960780_MT_Quote.exe

  • Size

    473KB

  • MD5

    03080711e2952cde2c9fd19d133a939e

  • SHA1

    3237ca2d142a3c4a0e87bca096bcca738d9601a2

  • SHA256

    3b2c7ef4cf7315a1bf510c073a7bd50bbc16a371b5e624479a2333b840f72e93

  • SHA512

    59949884887c288ca7e61ec2b894ca5d1a4125105b83ef16264f32fec1ded5a1d7053d55195df886c4857dbd84e8f2268337348d9ed9b5ccf9c75685c023ab95

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:1768
    • 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:1112
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RULEhjpmww" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8D51.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:108
    • 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:748

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/108-60-0x0000000000000000-mapping.dmp

  • memory/748-68-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-71-0x0000000004B20000-0x0000000004B21000-memory.dmp

    Filesize

    4KB

  • memory/748-65-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-64-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-66-0x000000000043787E-mapping.dmp

  • memory/748-63-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-61-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-62-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/748-73-0x0000000004B21000-0x0000000004B22000-memory.dmp

    Filesize

    4KB

  • memory/1112-59-0x0000000075821000-0x0000000075823000-memory.dmp

    Filesize

    8KB

  • memory/1112-58-0x0000000000000000-mapping.dmp

  • memory/1112-72-0x00000000024D0000-0x000000000311A000-memory.dmp

    Filesize

    12.3MB

  • memory/1112-67-0x00000000024D0000-0x000000000311A000-memory.dmp

    Filesize

    12.3MB

  • memory/1112-69-0x00000000024D0000-0x000000000311A000-memory.dmp

    Filesize

    12.3MB

  • memory/1768-55-0x00000000003F0000-0x00000000003F1000-memory.dmp

    Filesize

    4KB

  • memory/1768-53-0x0000000000F30000-0x0000000000F31000-memory.dmp

    Filesize

    4KB

  • memory/1768-57-0x00000000059D0000-0x0000000005A28000-memory.dmp

    Filesize

    352KB

  • memory/1768-56-0x00000000003E0000-0x00000000003E8000-memory.dmp

    Filesize

    32KB