Analysis

  • max time kernel
    121s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    20-10-2021 21:17

General

  • Target

    zBHZhzCVMBLbH7M.exe

  • Size

    413KB

  • MD5

    93a8e8650c365c2bd5b1bc94d65d8c30

  • SHA1

    3790b9359c7eec1e1554401294171db53f1e304f

  • SHA256

    8ec9d184c60520182a56b81909dee589b1409da5d32962008c2134fbc735e357

  • SHA512

    f48e08fa95448fe280953058d71b119c155655a934010f7b08be4611539ce7de94f710a4ca45cf5ec347597ce8cfa6ef2878976d4c055296391e6c57033e7ab0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sayyes123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 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 SetWindowsHookEx 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\zBHZhzCVMBLbH7M.exe
    "C:\Users\Admin\AppData\Local\Temp\zBHZhzCVMBLbH7M.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1256
    • C:\Users\Admin\AppData\Local\Temp\zBHZhzCVMBLbH7M.exe
      "C:\Users\Admin\AppData\Local\Temp\zBHZhzCVMBLbH7M.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1296

Network

MITRE ATT&CK Matrix ATT&CK v6

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/1256-54-0x0000000000AB0000-0x0000000000AB1000-memory.dmp
    Filesize

    4KB

  • memory/1256-56-0x00000000762D1000-0x00000000762D3000-memory.dmp
    Filesize

    8KB

  • memory/1256-57-0x0000000002190000-0x0000000002191000-memory.dmp
    Filesize

    4KB

  • memory/1256-58-0x00000000003A0000-0x00000000003A7000-memory.dmp
    Filesize

    28KB

  • memory/1256-59-0x0000000004E30000-0x0000000004E88000-memory.dmp
    Filesize

    352KB

  • memory/1296-60-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-63-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-65-0x000000000043760E-mapping.dmp
  • memory/1296-64-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1296-68-0x0000000004990000-0x0000000004991000-memory.dmp
    Filesize

    4KB

  • memory/1296-69-0x0000000004991000-0x0000000004992000-memory.dmp
    Filesize

    4KB