Analysis

  • max time kernel
    88s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    07-07-2020 09:20

General

  • Target

    Invoice_pdf.exe

  • Size

    552KB

  • MD5

    c72e293b8bc1a7a7e513fd4b43d75541

  • SHA1

    7a2328cb4c022b7cf996c1804af56b024ce15a98

  • SHA256

    f4b9349afed77764e8478c1ba283b708f7529c9afd4e047d75fe04233e7e4ddb

  • SHA512

    34ecd367b055ae15c8c2c44e24bdf391e4fff00fad5e95607cf17f184ed670ac8303e6daef65a98dc2f4d9b12ea09c4c1a4ce0f5188c6e86f680162600170f10

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gascuenca.es
  • Port:
    587
  • Username:
    angelmartinez@gascuenca.es
  • Password:
    gasW204@Z7

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gascuenca.es
  • Port:
    587
  • Username:
    angelmartinez@gascuenca.es
  • Password:
    gasW204@Z7

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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3788
    • C:\Users\Admin\AppData\Local\Temp\Invoice_pdf.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2540

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Invoice_pdf.exe.log
    MD5

    3753b01eddc20f64178eaf3d55b5c146

    SHA1

    ca50665940eb8519e1df0c1f185fb72a271c2a66

    SHA256

    99096651b1d9b4a7562f56c8e42c06d1166f7f22a93816e2862317ada8154b37

    SHA512

    566366e651e94fab25454fb0199508cd62a64723137b32fbd5bee531110403d9194b9a4fc053740c571a69e820c1c72e48d65fc3a5410a22b6ae9d2e55508bf3

  • memory/2540-0-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/2540-1-0x0000000000446B8E-mapping.dmp