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Analysis

  • max time kernel
    140s
  • max time network
    131s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    09/07/2020, 08:04

General

  • Target

    invoice copy.pdf.exe

  • Size

    936KB

  • MD5

    2edd8dec034997eaaaec39c5fd672253

  • SHA1

    6f69c8c6c7f4495bb7c7c1aefb37c493fdcd2220

  • SHA256

    61b6252c6e94348dfb52432de874d4784801bbf11016af055d2b625c1ec65463

  • SHA512

    655df6b4bb8f3a87534643b8242e94e27b67857bb54280e3da39babec88d8e557cc77888e60ee6344931c7a249cd2d6bda361ee9023a939fa98779340540fee5

Malware Config

Extracted

Credentials

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

Signatures

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • AgentTesla

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Suspicious use of WriteProcessMemory 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious behavior: EnumeratesProcesses 4 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 WriteProcessMemory
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    PID:2920
    • C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: EnumeratesProcesses
      PID:2980

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2980-0-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/2980-2-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/2980-3-0x0000000000400000-0x00000000004A4000-memory.dmp

    Filesize

    656KB

  • memory/2980-4-0x00000000021E0000-0x000000000222C000-memory.dmp

    Filesize

    304KB

  • memory/2980-5-0x0000000000662000-0x0000000000663000-memory.dmp

    Filesize

    4KB