Analysis

  • max time kernel
    110s
  • max time network
    97s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    17-07-2020 20:23

General

  • Target

    BL Draft DOC-20200716-PL#73820.exe

  • Size

    569KB

  • MD5

    9d053999325a2bec268f87221c67e989

  • SHA1

    76f78a2db52f185dae549602630cd3e4fb840b48

  • SHA256

    7dca78670f25be48dc43566c5d13185a9f6fa638f7bca006ebbb16f433b6bba1

  • SHA512

    ecba794cd2d13b55339964c02ab28e784fc1ca89ce2eda5eb571b0cef06af70c34f4a747cfce5d5bd3bbb3028f0db416aa222294def7ad82743eba4cd2dd49f8

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Sages101*

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe
    "C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2564
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\Halnza" /XML "C:\Users\Admin\AppData\Local\Temp\tmp49D0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2192
    • C:\Users\Admin\AppData\Local\Temp\BL Draft DOC-20200716-PL#73820.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2728

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2728-2-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB