Analysis

  • max time kernel
    147s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    07/03/2021, 07:46

General

  • Target
    c6b4f3ee78233d773c9d4b774a853ef7.exe
  • Size 849KB
  • Sample210307-vfd55s3xe6
  • SHA256 cba011ff738721f548b90c2297b21da4e3292ddd215dbce5a1b5df3371e8dadd
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    browse9ja

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6b4f3ee78233d773c9d4b774a853ef7.exe
    "C:\Users\Admin\AppData\Local\Temp\c6b4f3ee78233d773c9d4b774a853ef7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PzRoDTODDrjPp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9C7E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1456
    • C:\Users\Admin\AppData\Local\Temp\c6b4f3ee78233d773c9d4b774a853ef7.exe
      "C:\Users\Admin\AppData\Local\Temp\c6b4f3ee78233d773c9d4b774a853ef7.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:952

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/952-10-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/952-12-0x00000000746F0000-0x0000000074DDE000-memory.dmp

        memory/952-13-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/952-15-0x0000000004C20000-0x0000000004C21000-memory.dmp

        memory/1640-2-0x00000000746F0000-0x0000000074DDE000-memory.dmp

        memory/1640-3-0x0000000000B10000-0x0000000000B11000-memory.dmp

        memory/1640-5-0x0000000000260000-0x0000000000267000-memory.dmp

        memory/1640-6-0x0000000004E80000-0x0000000004E81000-memory.dmp

        memory/1640-7-0x0000000000980000-0x00000000009DD000-memory.dmp