Analysis

  • max time kernel
    137s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 00:08

General

  • Target

    761382.exe

  • Size

    599KB

  • MD5

    224cf907f188dcb2763b903256eb33df

  • SHA1

    a2148df06408e521e22cc468fe9f996fb9640a9b

  • SHA256

    3a21dd00809d7b9f054f3a4cdd5b5cd69965e8dcf98c9ec33897da2e211e1115

  • SHA512

    daba770fd851acc6e2e4130069b1f3297ad483b6be38d6f6edc385cb98d79ab4e95b0708379c43472d62b89c3bbb54d931104ba5b7925bed7b254d78184d8afe

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.medicare-equipment.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    AllTheBest777

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • 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
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\761382.exe
    "C:\Users\Admin\AppData\Local\Temp\761382.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AagKbKHaPPfENR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEADC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1836
    • C:\Users\Admin\AppData\Local\Temp\761382.exe
      "C:\Users\Admin\AppData\Local\Temp\761382.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1504

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1504-64-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-63-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-69-0x0000000004C61000-0x0000000004C62000-memory.dmp

    Filesize

    4KB

  • memory/1504-68-0x0000000004C60000-0x0000000004C61000-memory.dmp

    Filesize

    4KB

  • memory/1504-66-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-60-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-62-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-61-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/1504-65-0x000000000043764E-mapping.dmp

  • memory/1516-54-0x0000000001160000-0x0000000001161000-memory.dmp

    Filesize

    4KB

  • memory/1516-56-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

    Filesize

    4KB

  • memory/1516-58-0x0000000005A30000-0x0000000005A88000-memory.dmp

    Filesize

    352KB

  • memory/1516-57-0x0000000000260000-0x0000000000268000-memory.dmp

    Filesize

    32KB

  • memory/1836-59-0x0000000000000000-mapping.dmp