Analysis

  • max time kernel
    42s
  • max time network
    9s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    10-07-2020 07:16

General

  • Target

    Purchase Order.pdf.exe

  • Size

    804KB

  • MD5

    1b02f2f6ea986292e7a8dc776af16856

  • SHA1

    17913bd6f90ac99f55c8bf3f274d6f889cafa1fd

  • SHA256

    661e8315649bab0f2f8f78a31a60935ff0a88d70883db4f1d54024a80f3bc798

  • SHA512

    6789cd591b698eef0ad08bfd27761607a228409a6490b0ba6aef7b3719ef89c50e6561116e4a40482183d162fe8cf913da6e58920738433f8186aa33ddae9d1c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sensar-light.com
  • Port:
    587
  • Username:
    boss@sensar-light.com
  • Password:
    boss12345@@@@@

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • 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.

  • 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 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1068
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1328
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order.pdf.exe" 2 1328 86580
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1428

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

  • memory/1328-0-0x0000000000400000-0x00000000004A4000-memory.dmp
    Filesize

    656KB

  • memory/1328-1-0x00000000004A24A0-mapping.dmp
  • memory/1328-3-0x0000000000400000-0x00000000004A4000-memory.dmp
    Filesize

    656KB

  • memory/1328-4-0x0000000000400000-0x00000000004A4000-memory.dmp
    Filesize

    656KB

  • memory/1328-5-0x0000000000370000-0x00000000003BC000-memory.dmp
    Filesize

    304KB

  • memory/1328-6-0x0000000001F72000-0x0000000001F73000-memory.dmp
    Filesize

    4KB

  • memory/1328-7-0x0000000000220000-0x0000000000266000-memory.dmp
    Filesize

    280KB

  • memory/1428-2-0x0000000000000000-mapping.dmp