Overview

overview

10

Static

static

gunzipped.exe

windows7_x64

10

gunzipped.exe

windows10_x64

10

Analysis

  • max time kernel
    138s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    30-06-2020 06:34

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General

  • Target

    gunzipped.exe

  • Size

    399KB

  • MD5

    e55b5bd68342c4f7704ca1c5792b45ca

  • SHA1

    f5dd6749efe6206a829d2a9c4b00516f4ea366a8

  • SHA256

    736752175fe91906f41d00670318a55afe8c2c85e30ced11df477f5c61fddac8

  • SHA512

    629035fc3b963cc38a457b88a75f5705399bcdd36470bd6eada109b418135826efdef283965e8bf01768f30bf43012e3cc59fe3b4b1ecdd7f735bf8979425537

Score
10/10
spywarekeyloggertrojanstealeragenttesla

Malware Config

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.anding-tw.com
  • Port:
    587
  • Username:
    issac@anding-tw.com
  • Password:
    zra1@!G8gQ+i

Signatures

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

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

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

    spyware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • 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
  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • Suspicious use of WriteProcessMemory 11 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
    "C:\Users\Admin\AppData\Local\Temp\gunzipped.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    PID:1628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\omTpBJC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C69.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3700
    • C:\Users\Admin\AppData\Local\Temp\gunzipped.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3812

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Credentials in Files

3
T1081

Discovery

Lateral Movement

Collection

Data from Local System

3
T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\gunzipped.exe.log
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  • C:\Users\Admin\AppData\Local\Temp\tmp7C69.tmp
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  • memory/3700-0-0x0000000000000000-mapping.dmp
    Download
  • memory/3812-3-0x0000000000446E2E-mapping.dmp
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  • memory/3812-2-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

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