Overview

overview

10

Static

static

3

SilverClient.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    SilverClient.exe

  • Size

    43KB

  • Sample

    240902-18va8aydpn

  • MD5

    16edc9184a4f2e4c18200304594d43d9

  • SHA1

    9328f1016cf247a13b110d6ece2826ba4ad5a8cf

  • SHA256

    be652d4e5771a47651e037776bbd47e90d3ab7de28e61e3c86abfc4b76c813dd

  • SHA512

    196f4c9b55d2883b4c7364aca90741a9e606952e2c798b2c4075a661768dab274b5b6683280404ff31eed98a11003991c67f7af4d61cf48dd131e7365a3cf74d

  • SSDEEP

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

Score
10/10
stormkittydiscoveryevasionexecutionpersistenceransomwarestealertrojan

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
    stormkittydiscoveryevasionexecutionpersistenceransomwarestealertrojan

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • StormKitty

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

      stealerstormkitty

    • StormKitty payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

      evasiontrojan

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Disables RegEdit via registry modification

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Enumerates connected drives

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

    • Drops file in System32 directory

    • 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

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

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

Active Setup

1
T1547.014

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

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

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

7
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

2
T1120

Query Registry

6
T1012

System Information Discovery

7
T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Tasks