Analysis

  • max time kernel
    59s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 19:47

General

  • Target
    URGENT TENDER#675320 (covid19 kits).exe
  • Size 415KB
  • Sample201109-m3jg5jcsss
  • SHA256 2841a78e3acf75956e7ed6ebb99cac1a3e349cdca5e9113381a997c5e1ecef47
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.chinagrill.co

  • Port

    587

  • Password

    SnIVrXH!]f1q

Signatures

  • AgentTesla

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

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • AgentTesla Payload 4 IoCs
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\URGENT TENDER#675320 (covid19 kits).exe
    "C:\Users\Admin\AppData\Local\Temp\URGENT TENDER#675320 (covid19 kits).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1980

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1588-0-0x0000000074670000-0x0000000074D5E000-memory.dmp

        memory/1588-1-0x00000000002C0000-0x00000000002C1000-memory.dmp

        memory/1588-3-0x0000000000360000-0x0000000000363000-memory.dmp

        memory/1588-4-0x0000000004740000-0x0000000004792000-memory.dmp

        memory/1980-5-0x0000000000400000-0x0000000000450000-memory.dmp

        memory/1980-8-0x0000000000400000-0x0000000000450000-memory.dmp

        memory/1980-7-0x0000000000400000-0x0000000000450000-memory.dmp

        memory/1980-9-0x0000000074670000-0x0000000074D5E000-memory.dmp