Analysis

  • max time kernel
    91s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:44

General

  • Target

    169287394-75414-SANWVDDNETP0034-3.pdf.exe

  • Size

    620KB

  • MD5

    e7039a6bab57769e5d31dd8f6b205942

  • SHA1

    6bdbe09b0ef07742e30efe017c87989b21c46266

  • SHA256

    3495ebe6b428bddfa71646ed4e09f1f707d7b8a512549841c96d88bc03f328db

  • SHA512

    66ca67f015f556349f6ffceda23bf3a4a6696fb0c70bdb35baa5b66c7fe183ea37b1d730b0460a14026b18f65ddff1a3dada737c3921989ec96cbfc3117b814a

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.ru
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    jose2130

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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\169287394-75414-SANWVDDNETP0034-3.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\169287394-75414-SANWVDDNETP0034-3.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\AppData\Local\Temp\169287394-75414-SANWVDDNETP0034-3.pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1532

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

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\169287394-75414-SANWVDDNETP0034-3.pdf.exe.log
    Filesize

    507B

    MD5

    76ffb2f33cb32ade8fc862a67599e9d8

    SHA1

    920cc4ab75b36d2f9f6e979b74db568973c49130

    SHA256

    f1a3724670e3379318ec9c73f6f39058cab0ab013ba3cd90c047c3d701362310

    SHA512

    f33502c2e1bb30c05359bfc6819ca934642a1e01874e3060349127d792694d56ad22fccd6c9477b8ee50d66db35785779324273f509576b48b7f85577e001b4e

  • memory/1532-134-0x0000000000000000-mapping.dmp
  • memory/1532-135-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/1532-137-0x0000000006030000-0x0000000006096000-memory.dmp
    Filesize

    408KB

  • memory/1532-138-0x00000000079B0000-0x0000000007A00000-memory.dmp
    Filesize

    320KB

  • memory/1532-139-0x0000000007A30000-0x0000000007A3A000-memory.dmp
    Filesize

    40KB

  • memory/4436-130-0x0000000000030000-0x00000000000D2000-memory.dmp
    Filesize

    648KB

  • memory/4436-131-0x00000000074B0000-0x0000000007A54000-memory.dmp
    Filesize

    5.6MB

  • memory/4436-132-0x0000000006FA0000-0x0000000007032000-memory.dmp
    Filesize

    584KB

  • memory/4436-133-0x0000000007040000-0x00000000070DC000-memory.dmp
    Filesize

    624KB