Analysis

  • max time kernel
    90s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 10:52

General

  • Target

    sam334.exe

  • Size

    730KB

  • MD5

    09f3daddaec326433de907b3653d58e5

  • SHA1

    42886f9f361dc8aee4820d087dbbb865261b26ed

  • SHA256

    c04c4bb521cb18dc16fbacc4220c0f854bfadfdc0c016ec6fd868d52fe8c3e08

  • SHA512

    050fb5a6c3dbc0af923b29c16c11d3b65dfc57d3d53590ca324924b5bd66d2f666be65fd8ed72b7fcf2b3dbdf8732ed64c5e24dae3ac7c97c2414cec1f8c728c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.shrc-india.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Orders@9999

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 60 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sam334.exe
    "C:\Users\Admin\AppData\Local\Temp\sam334.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\sam334.exe
      "C:\Users\Admin\AppData\Local\Temp\sam334.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:2640
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:264
      • C:\Users\Admin\AppData\Local\Temp\sam334.exe
        "C:\Users\Admin\AppData\Local\Temp\sam334.exe" 2 2640 240571109
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:5036

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/264-140-0x0000000000000000-mapping.dmp
    • memory/2640-136-0x0000000004D60000-0x0000000005304000-memory.dmp
      Filesize

      5.6MB

    • memory/2640-132-0x0000000000940000-0x0000000000992000-memory.dmp
      Filesize

      328KB

    • memory/2640-134-0x0000000000940000-0x0000000000992000-memory.dmp
      Filesize

      328KB

    • memory/2640-130-0x0000000000000000-mapping.dmp
    • memory/2640-137-0x0000000004A70000-0x0000000004B02000-memory.dmp
      Filesize

      584KB

    • memory/2640-138-0x0000000004B30000-0x0000000004BCC000-memory.dmp
      Filesize

      624KB

    • memory/2640-139-0x0000000005900000-0x0000000005966000-memory.dmp
      Filesize

      408KB

    • memory/2640-141-0x0000000005E30000-0x0000000005E80000-memory.dmp
      Filesize

      320KB

    • memory/2640-142-0x00000000062C0000-0x00000000062CA000-memory.dmp
      Filesize

      40KB

    • memory/4956-133-0x0000000000400000-0x00000000004BE000-memory.dmp
      Filesize

      760KB

    • memory/5036-135-0x0000000000400000-0x00000000004BE000-memory.dmp
      Filesize

      760KB

    • memory/5036-131-0x0000000000000000-mapping.dmp