Analysis

  • max time kernel
    137s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7v200430
  • submitted
    16-07-2020 18:38

General

  • Target

    DHL INV+AWB100617740009725.PDF____.exe

  • Size

    727KB

  • MD5

    279189f9746b79c1112ebf9cbb2daef8

  • SHA1

    0723886286f7050f9a330defff50c3216e40fe1b

  • SHA256

    1868421d82c1476c4106fee2902fde4c749d7e8bcd9b34fdc09d86733d9198de

  • SHA512

    03a748075224e73c93bf1681800070aae3e903a379339777b6a8cf73b95d3399d185d8506ca5f07f082a3a0affd7d63c0230f8f9826a40b9a36be6f8fb45b328

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    opjis0123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL INV+AWB100617740009725.PDF____.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL INV+AWB100617740009725.PDF____.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1432
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1832

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1832-4-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1832-7-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/1832-8-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB