Overview

overview

8

Static

static

3

IRS_Docume...er.exe

windows10-2004-x64

8

IRS_Docume...er.exe

windows11-ltsc_2024-x64

8

Sharing

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General

  • Target
    IRS_Document_Viewer.exe
  • Size 4.2MB
  • Sample260729-rew4aawape
  • SHA256 1f7903067338b2f35365bbe145ea39a88d35f4f0cf0cd1d0bc7d8df3494d8003
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
defense_evasiondiscoveryexecutionransomwarespywaretrojan

Malware Config

Targets

    • Target
      IRS_Document_Viewer.exe
    • Size 4.2MB
    • SHA256 1f7903067338b2f35365bbe145ea39a88d35f4f0cf0cd1d0bc7d8df3494d8003
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    defense_evasiondiscoveryexecutionransomwarespywaretrojan

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Executes dropped EXE

    • Loads dropped DLL

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks