Overview

overview

10

Static

static

8

knitted ya...ts.exe

windows7_x64

10

knitted ya...ts.exe

windows10_x64

10

Analysis

  • max time kernel
    100s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    20/11/2020, 07:50

Sharing

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General

  • Target
    knitted yarn documents.exe
  • Size 342KB
  • Sample201120-jc9rtflxpn
  • SHA256 e10c50ccf291423e5b5205ceb99349f63dcdface40517c70bf7486f119ec1ee4
  • MD5 SHA1 SHA512
Score
10/10
agentteslakeyloggerspywarestealertrojanupx

Malware Config

Extracted

Family

  • agenttesla

Credentials
  • Protocol

    smtp
  • Host

    smtp.gmail.com
  • Port

    587
  • Username

    [email protected]
  • Password

    pounds22222

Signatures

  • AgentTesla

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

    keyloggertrojanstealerspywareagenttesla
  • AgentTesla Payload 2 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe
    "C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:428
    • C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe
      "C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3524
    • C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe
      "C:\Users\Admin\AppData\Local\Temp\knitted yarn documents.exe" 2 3524 259298093
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3468

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/428-0-0x0000000000400000-0x00000000004BC000-memory.dmp
        Download

        memory/3468-6-0x0000000000400000-0x00000000004BC000-memory.dmp
        Download

        memory/3524-1-0x0000000000400000-0x0000000000486000-memory.dmp
        Download

        memory/3524-4-0x0000000000400000-0x0000000000486000-memory.dmp
        Download

        memory/3524-5-0x0000000000400000-0x0000000000486000-memory.dmp
        Download

        memory/3524-7-0x0000000002170000-0x00000000021AC000-memory.dmp
        Download

        memory/3524-8-0x0000000002212000-0x0000000002213000-memory.dmp
        Download