Overview

overview

10

Static

static

1

NEW_JJSploit.zip

windows10-ltsc 2021-x64

10

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General

  • Target

    NEW_JJSploit.zip

  • Size

    408KB

  • Sample

    250112-gbbm3a1lap

  • MD5

    2791f19789ee184e7d17a4a6ecf5a84f

  • SHA1

    7837b2d22748d31368784e88e25ce5890a76a8c7

  • SHA256

    4fcb4f976aa56b66a598ffe94ff636265de995840c64470035662111e8702cd1

  • SHA512

    d7fca2820467ce21412ed27f375d87c33f4e5f5745e34aa8720a53fb36323c12f9efc5d7fd878b5e3cfb6af1f470d3588bbcd95d040c5784a588af279ec077c9

  • SSDEEP

    12288:uTOWtfmeUes659ELUOkdRe6c5uqbvAzC/Z7qth:xgme15QUefbvZ7yh

Score
10/10
umbraldiscoveryexecutionpersistenceprivilege_escalationspywarestealer

Malware Config

Targets

    • Target

      NEW_JJSploit.zip

    • Size

      408KB

    • MD5

      2791f19789ee184e7d17a4a6ecf5a84f

    • SHA1

      7837b2d22748d31368784e88e25ce5890a76a8c7

    • SHA256

      4fcb4f976aa56b66a598ffe94ff636265de995840c64470035662111e8702cd1

    • SHA512

      d7fca2820467ce21412ed27f375d87c33f4e5f5745e34aa8720a53fb36323c12f9efc5d7fd878b5e3cfb6af1f470d3588bbcd95d040c5784a588af279ec077c9

    • SSDEEP

      12288:uTOWtfmeUes659ELUOkdRe6c5uqbvAzC/Z7qth:xgme15QUefbvZ7yh

    Score
    10/10
    umbraldiscoveryexecutionpersistenceprivilege_escalationspywarestealer

    • Detect Umbral payload

    • Modifies WinLogon for persistence

      persistence

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

      stealerumbral

    • Umbral family

      umbral

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Drops file in Drivers directory

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

      persistenceprivilege_escalation

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

AppInit DLLs

1
T1546.010

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

AppInit DLLs

1
T1546.010

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks