Overview

overview

10

Static

static

3

SilverClient.exe

windows10-1703-x64

10

Sharing

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General

  • Target

    SilverClient.exe

  • Size

    43KB

  • Sample

    240902-2p4k8azajm

  • MD5

    16edc9184a4f2e4c18200304594d43d9

  • SHA1

    9328f1016cf247a13b110d6ece2826ba4ad5a8cf

  • SHA256

    be652d4e5771a47651e037776bbd47e90d3ab7de28e61e3c86abfc4b76c813dd

  • SHA512

    196f4c9b55d2883b4c7364aca90741a9e606952e2c798b2c4075a661768dab274b5b6683280404ff31eed98a11003991c67f7af4d61cf48dd131e7365a3cf74d

  • SSDEEP

    768:UsvI7cIxr7BcD1wjWxYQ4xJNHVR8kq/5h34vCvZPxaxP4RULQv9S6HPz1QB6Si/o:UsvwcIxrgwkbcrq/5xcl4Gsv9j71QoJg

Score
10/10
stormkittycredential_accessdefense_evasiondiscoveryevasionexecutionpersistenceprivilege_escalationransomwarespywarestealertrojan

Malware Config

Targets

    • Target

      SilverClient.exe

    • Size

      43KB

    • MD5

      16edc9184a4f2e4c18200304594d43d9

    • SHA1

      9328f1016cf247a13b110d6ece2826ba4ad5a8cf

    • SHA256

      be652d4e5771a47651e037776bbd47e90d3ab7de28e61e3c86abfc4b76c813dd

    • SHA512

      196f4c9b55d2883b4c7364aca90741a9e606952e2c798b2c4075a661768dab274b5b6683280404ff31eed98a11003991c67f7af4d61cf48dd131e7365a3cf74d

    • SSDEEP

      768:UsvI7cIxr7BcD1wjWxYQ4xJNHVR8kq/5h34vCvZPxaxP4RULQv9S6HPz1QB6Si/o:UsvwcIxrgwkbcrq/5xcl4Gsv9j71QoJg

    Score
    10/10
    stormkittycredential_accessdefense_evasiondiscoveryevasionexecutionpersistenceprivilege_escalationransomwarespywarestealertrojan

    • StormKitty

      StormKitty is an open source info stealer written in C#.

      stealerstormkitty

    • StormKitty payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

      evasiontrojan

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

      credential_accessstealer

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Disables RegEdit via registry modification

      evasion

    • Modifies Windows Firewall

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Executes dropped EXE

    • 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

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops desktop.ini file(s)

    • Modifies WinLogon

      persistence

    • Hide Artifacts: Hidden Users

      defense_evasion

    • Sets desktop wallpaper using registry

      ransomware
    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

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

3
T1564

Hidden Files and Directories

2
T1564.001

Hidden Users

1
T1564.002

Impair Defenses

2
T1562

Disable or Modify System Firewall

1
T1562.004

Disable or Modify Tools

1
T1562.001

Modify Registry

5
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

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

5
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Tasks