Analysis

  • max time kernel
    124s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    30-06-2020 13:24

General

  • Target

    Invoice_33748.exe

  • Size

    413KB

  • MD5

    1526bf783e32b08409639b9cefb0ff08

  • SHA1

    a921eba7d983bcb181d0bb224c91ef64769021e7

  • SHA256

    7b888494d9279f87b3b2a69e11fa5a68efa06bc86522d02764382da220396861

  • SHA512

    37375425a49e2fcfe4df6ec1cfa2f4837b9cdd2c163a16de8b7fb2bb067a687f0d2e29b4850b1ab5271e3483cfc2863356f399f2e240eab7a42c7b2071a4fe28

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.uteshiyamedicare.com
  • Port:
    587
  • Username:
    info@uteshiyamedicare.com
  • Password:
    info111@

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.uteshiyamedicare.com
  • Port:
    587
  • Username:
    info@uteshiyamedicare.com
  • Password:
    info111@

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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice_33748.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice_33748.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Users\Admin\AppData\Local\Temp\Invoice_33748.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3852

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_33748.exe.log
    MD5

    3753b01eddc20f64178eaf3d55b5c146

    SHA1

    ca50665940eb8519e1df0c1f185fb72a271c2a66

    SHA256

    99096651b1d9b4a7562f56c8e42c06d1166f7f22a93816e2862317ada8154b37

    SHA512

    566366e651e94fab25454fb0199508cd62a64723137b32fbd5bee531110403d9194b9a4fc053740c571a69e820c1c72e48d65fc3a5410a22b6ae9d2e55508bf3

  • memory/3852-0-0x0000000000400000-0x000000000044C000-memory.dmp
    Filesize

    304KB

  • memory/3852-1-0x00000000004471EE-mapping.dmp