Overview

overview

10

Static

static

WMTR0987S5...om.exe

windows7_x64

9

WMTR0987S5...om.exe

windows10_x64

10

Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    29/06/2020, 09:16

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General

  • Target
    WMTR0987S5__PDF__.com.exe
  • Size 482KB
  • Sample200629-prpky5gnra
  • SHA256 3d9dcaab541c278bd14cfdc7b333296c44bf36be1443fa381f61784c9d871f2c
  • MD5 SHA1 SHA512
Score
10/10
agentteslaevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • agenttesla

Credentials
  • Protocol

    smtp
  • Host

    mail.privateemail.com
  • Port

    587
  • Username

    [email protected]
  • Password

    dubem@4000XAXAX

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 2 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Drops file in Drivers directory 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • 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.

    spyware
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

    spyware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WMTR0987S5__PDF__.com.exe
    "C:\Users\Admin\AppData\Local\Temp\WMTR0987S5__PDF__.com.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4092
    • C:\Users\Admin\AppData\Local\Temp\WMTR0987S5__PDF__.com.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3956

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3956-0-0x0000000000400000-0x000000000044C000-memory.dmp
        Download