Analysis

  • max time kernel
    159s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 22:18

General

  • Target

    YdvJnnnDX0FUKjI.exe

  • Size

    290KB

  • MD5

    1795c0e7a5c67752a3e13c5a0f6ce9af

  • SHA1

    509635b13636a2b0dc5308270fbabfdfa4e0a020

  • SHA256

    6fae5955bfeac6e762f65fabedb2be2fdcd385347e6b9db19825096ee2ebd9a1

  • SHA512

    ed7384717a3c6c63b53188b73a46c57058f4bd327c14fb11f23ae7e8c42cf7f63a7e0aef6914cc08301b4615d3f3d9d87c56037a37e4e57269e63703d53683d2

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.arhigraf.ro
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    kH~2kU(;kEtR

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\YdvJnnnDX0FUKjI.exe
    "C:\Users\Admin\AppData\Local\Temp\YdvJnnnDX0FUKjI.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Users\Admin\AppData\Local\Temp\YdvJnnnDX0FUKjI.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4520

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1832-130-0x0000000000F60000-0x0000000000FAE000-memory.dmp

    Filesize

    312KB

  • memory/1832-131-0x0000000005B00000-0x0000000005B92000-memory.dmp

    Filesize

    584KB

  • memory/1832-132-0x0000000006210000-0x00000000062AC000-memory.dmp

    Filesize

    624KB

  • memory/1832-133-0x0000000006960000-0x0000000006F04000-memory.dmp

    Filesize

    5.6MB

  • memory/4520-134-0x0000000000000000-mapping.dmp

  • memory/4520-135-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/4520-136-0x0000000006050000-0x00000000060B6000-memory.dmp

    Filesize

    408KB

  • memory/4520-137-0x0000000006800000-0x0000000006850000-memory.dmp

    Filesize

    320KB