Analysis

  • max time kernel
    59s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 03:46

General

  • Target

    INVOICE copy.pdf.exe

  • Size

    689KB

  • MD5

    5f6d5bc9d3eb49159c86ad34d9d56630

  • SHA1

    6ca254c29159461ec8b0102c7a830656729b1989

  • SHA256

    3ebf463f9b7164a3e4ebcbac495f7fe23b2dbe7f18a7ebc2c0ee55fb4b651c83

  • SHA512

    da82a06d2d2351f0a5f11b5a326db73110a713b231521449074906602ca12bfd6e2641ffb345a7351e9b1a6dfc95997ce995a4368a2fe351f602e3cc0d9878d0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    chibuikelightwork1

Signatures

  • AgentTesla

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

  • AgentTesla Payload 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\INVOICE copy.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\INVOICE copy.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\INVOICE copy.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\INVOICE copy.pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:540

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/540-55-0x00000000004A2410-mapping.dmp

  • memory/540-57-0x0000000000380000-0x00000000003CC000-memory.dmp

    Filesize

    304KB

  • memory/540-58-0x0000000000380000-0x00000000003CC000-memory.dmp

    Filesize

    304KB

  • memory/540-60-0x00000000749A0000-0x0000000074F4B000-memory.dmp

    Filesize

    5.7MB

  • memory/1672-54-0x0000000075B61000-0x0000000075B63000-memory.dmp

    Filesize

    8KB

  • memory/1672-56-0x0000000000280000-0x000000000028A000-memory.dmp

    Filesize

    40KB