Overview

overview

10

Static

static

3

BALDI.exe

windows7-x64

1

BALDI.exe

windows10-2004-x64

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General

  • Target

    BALDI.exe

  • Size

    5.6MB

  • Sample

    240625-gx397sthkd

  • MD5

    8235f398b63cb2b0926edf528a56ad35

  • SHA1

    668ff71112d6bf289b70659d063d524481c19b0f

  • SHA256

    0091be76fcfaadfb4d45f22ce3cb5189fd919ee89cfb901c9eed7f6a6aa61c6a

  • SHA512

    51cf7794ea120ebaad6d53b2722f35e57b1d28b5365e53a74d945f45d180d6a5bfe3b27f963485c53079103947e552c88631485ba49a160a4b09c9afd4a66674

  • SSDEEP

    98304:3rd/2Kf8MIhWIcn1111DIgzO9QeMfXTjig8nuluLlKUORY+6Mrv:3rR2KfBIc1j1J8sfXvpQlHfE

Score
10/10
umbraldiscoveryevasionexecutionexploitpersistenceprivilege_escalationransomwarestealertrojan

Malware Config

Targets

    • Target

      BALDI.exe

    • Size

      5.6MB

    • MD5

      8235f398b63cb2b0926edf528a56ad35

    • SHA1

      668ff71112d6bf289b70659d063d524481c19b0f

    • SHA256

      0091be76fcfaadfb4d45f22ce3cb5189fd919ee89cfb901c9eed7f6a6aa61c6a

    • SHA512

      51cf7794ea120ebaad6d53b2722f35e57b1d28b5365e53a74d945f45d180d6a5bfe3b27f963485c53079103947e552c88631485ba49a160a4b09c9afd4a66674

    • SSDEEP

      98304:3rd/2Kf8MIhWIcn1111DIgzO9QeMfXTjig8nuluLlKUORY+6Mrv:3rR2KfBIc1j1J8sfXvpQlHfE

    Score
    10/10
    umbraldiscoveryevasionexecutionexploitpersistenceprivilege_escalationransomwarestealertrojan

    • Detect Umbral payload

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Umbral

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

      stealerumbral

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Disables Task Manager via registry modification

      evasion

    • Possible privilege escalation attempt

      exploit

    • Modifies file permissions

      discovery

    • 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.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Accessibility Features

1
T1546.008

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Event Triggered Execution

1
T1546

Accessibility Features

1
T1546.008

Defense Evasion

Modify Registry

3
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

File and Directory Permissions Modification

1
T1222

Credential Access

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks