Analysis

  • max time kernel
    142s
  • max time network
    12s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    08-02-2022 03:12

General

  • Target

    INV.exe

  • Size

    310KB

  • MD5

    74af18caa94425fd150c9bc2b1b89771

  • SHA1

    d324c1ea8218c2a65b89c47b0ba11b63acb464b0

  • SHA256

    0689d5aa88eeabb27ebb29c4a50ce9d1d125e641484cc649ab1bf34327e611e5

  • SHA512

    0d81e5216fd47ede4023996a82554e7592eb33c804a8d9407079482c5c0902d08cc4ae3cd3fb1ca019a1923c1213af594f63bd5f3b2aaa8ef46fc92dbe32d96d

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MARYolanmauluogwo@ever

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Drops startup file 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INV.exe
    "C:\Users\Admin\AppData\Local\Temp\INV.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1536
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\INV.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\I$s#$lT3ssl.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:464
    • C:\Users\Admin\AppData\Local\Temp\INV.exe
      "C:\Users\Admin\AppData\Local\Temp\INV.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1224

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/464-71-0x00000000703E0000-0x000000007098B000-memory.dmp
    Filesize

    5.7MB

  • memory/464-76-0x0000000002280000-0x0000000002560000-memory.dmp
    Filesize

    2.9MB

  • memory/464-74-0x00000000703E0000-0x000000007098B000-memory.dmp
    Filesize

    5.7MB

  • memory/464-73-0x00000000703E0000-0x000000007098B000-memory.dmp
    Filesize

    5.7MB

  • memory/464-72-0x0000000002280000-0x0000000002560000-memory.dmp
    Filesize

    2.9MB

  • memory/1224-65-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-67-0x0000000074D60000-0x000000007544E000-memory.dmp
    Filesize

    6.9MB

  • memory/1224-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-63-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-64-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-77-0x00000000021A1000-0x00000000021A2000-memory.dmp
    Filesize

    4KB

  • memory/1224-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1224-68-0x00000000021A0000-0x00000000021A1000-memory.dmp
    Filesize

    4KB

  • memory/1536-60-0x0000000000310000-0x0000000000326000-memory.dmp
    Filesize

    88KB

  • memory/1536-58-0x00000000006B0000-0x0000000000700000-memory.dmp
    Filesize

    320KB

  • memory/1536-57-0x0000000000670000-0x0000000000671000-memory.dmp
    Filesize

    4KB

  • memory/1536-56-0x0000000076C91000-0x0000000076C93000-memory.dmp
    Filesize

    8KB

  • memory/1536-55-0x0000000074D60000-0x000000007544E000-memory.dmp
    Filesize

    6.9MB

  • memory/1536-54-0x00000000009D0000-0x0000000000A24000-memory.dmp
    Filesize

    336KB