Overview

overview

10

Static

static

3

b85123da03...6a.exe

windows7-x64

10

b85123da03...6a.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b85123da03ee5c76a1a98d7b8a5c56cc07efe444b9cbf9f2c1f8813fa324ce6a.exe

  • Size

    622KB

  • Sample

    240328-c1x55sdb9z

  • MD5

    467111735472753ad98e8500663b1de7

  • SHA1

    8986442fd28e74c6f55baf354002dd678f73995e

  • SHA256

    b85123da03ee5c76a1a98d7b8a5c56cc07efe444b9cbf9f2c1f8813fa324ce6a

  • SHA512

    892f17af5c873a5e9717c72b1c5c7783536872e89e42663079c9f0848b8a104ad29d231ae7bd4a62d6fd49996ac5fb516dffd058cbe26e5f74ef4cad7306894e

  • SSDEEP

    12288:aa5WDRFksUKQNuqq2QJrK9E8qIr18hrQBQKXXUaHMvA1dmGBLyrN1H80UjHgJ:+HkswdxkrK9E8zrWJcxt9dmKyrN1u

Score
10/10
agentteslakeyloggerspywarestealertrojan

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:     smtp
  • Host:
    smtp.flying-fish-cn.com
  • Port:
    587
  • Username:
    office@flying-fish-cn.com
  • Password:
    hkk999@@@
  • Email To:
    office@flying-fish-cn.com

Extracted

Credentials

  • Protocol:     smtp
  • Host:
    smtp.flying-fish-cn.com
  • Port:
    587
  • Username:
    office@flying-fish-cn.com
  • Password:
    hkk999@@@

Targets

    • Target

      b85123da03ee5c76a1a98d7b8a5c56cc07efe444b9cbf9f2c1f8813fa324ce6a.exe

    • Size

      622KB

    • MD5

      467111735472753ad98e8500663b1de7

    • SHA1

      8986442fd28e74c6f55baf354002dd678f73995e

    • SHA256

      b85123da03ee5c76a1a98d7b8a5c56cc07efe444b9cbf9f2c1f8813fa324ce6a

    • SHA512

      892f17af5c873a5e9717c72b1c5c7783536872e89e42663079c9f0848b8a104ad29d231ae7bd4a62d6fd49996ac5fb516dffd058cbe26e5f74ef4cad7306894e

    • SSDEEP

      12288:aa5WDRFksUKQNuqq2QJrK9E8qIr18hrQBQKXXUaHMvA1dmGBLyrN1H80UjHgJ:+HkswdxkrK9E8zrWJcxt9dmKyrN1u

    Score
    10/10
    agentteslakeyloggerspywarestealertrojan

    • AgentTesla

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

      keyloggertrojanstealerspywareagenttesla

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with SmartAssembly

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

      spywarestealer

    • Reads user/profile data of local email clients

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

      spywarestealer

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

4
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks