Analysis

  • max time kernel
    88s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    10/07/2020, 07:06

General

  • Target

    po=593624.exe

  • Size

    410KB

  • MD5

    ba0ebf1fef1d06e21378af70a1e8babe

  • SHA1

    b0d07ccd59b84569841d2aa3a0529cedb7d7ecc4

  • SHA256

    744b624507df8e9bccf72af6cc834130ad75deb8c1beff8084cd101605c8eec1

  • SHA512

    ce49bc92c10916afbc9f7c8bc1d9c34184f674f62f03ac02b600c335aec5873c4dcaaa6dd275f539bafa088f8ae79dd197269c85bb7b59e8b3598c8c0ed5954a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    web2.changeip.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    OGywVbROjkvK

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\po=593624.exe
    "C:\Users\Admin\AppData\Local\Temp\po=593624.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CzVjnXZqugxQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF102.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:772
    • C:\Users\Admin\AppData\Local\Temp\po=593624.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1604

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1604-4-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1604-6-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1604-7-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB