Analysis

  • max time kernel
    99s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    27-07-2021 15:06

General

  • Target

    PO 98246.exe

  • Size

    940KB

  • MD5

    87fb6b88ed5e0ad768dd1fb8fc9c46af

  • SHA1

    739749390782129616a8a776ff745a748de3048a

  • SHA256

    9cb1e7f66fe3c5e0ba2e1d525dddf593ceb57df41a49b874228c61322e6a4861

  • SHA512

    e3c4177f3de2aecb953b0f6efed90d969e9a3d4254985ad4ae58a917554961164321570fcf83ae8e5d95c6c5f9fc008ce2c241faaad28c9b01bbc3f82d081ef5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    paola.micheli@copangroup.xyz
  • Password:
    gibson.1990

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1960

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

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1908-60-0x0000000000B50000-0x0000000000B51000-memory.dmp
    Filesize

    4KB

  • memory/1908-62-0x00000000022D0000-0x00000000022D1000-memory.dmp
    Filesize

    4KB

  • memory/1908-63-0x0000000000AA0000-0x0000000000B08000-memory.dmp
    Filesize

    416KB

  • memory/1908-64-0x00000000001F0000-0x00000000001FF000-memory.dmp
    Filesize

    60KB

  • memory/1960-66-0x000000000043760E-mapping.dmp
  • memory/1960-65-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1960-67-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1960-69-0x00000000022D0000-0x00000000022D1000-memory.dmp
    Filesize

    4KB

  • memory/1960-70-0x00000000022D1000-0x00000000022D2000-memory.dmp
    Filesize

    4KB