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Analysis

  • max time kernel
    129s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    08/07/2020, 12:53

General

  • Target

    Invoice00846.pif.exe

  • Size

    879KB

  • MD5

    2946020f2dc046aceff16b15d84d5122

  • SHA1

    3e6c8a4d954923a608e3b4a6a02e6f6b010cb32e

  • SHA256

    c897bb6c238b8990b86fd2c2a543b631e1cde061033da452c02d8037c6a19fe1

  • SHA512

    c4f91e5302d0f00973a923102c58a66e7db9fb694904e6a19b3616b292f89602f51d69d7a622d81a64739a669d0824afb8e60f3a0992e09226465e6d14377821

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.ionos.es
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    EWP552255EWP

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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice00846.pif.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice00846.pif.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1376
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bCKekA" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B6D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1612
    • C:\Users\Admin\AppData\Local\Temp\Invoice00846.pif.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1164

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1164-4-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1164-6-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1164-7-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB