Overview

overview

9

Static

static

1

WebCompani...er.exe

windows10-2004-x64

9

Sharing

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General

  • Target
    WebCompanionInstaller.zip
  • Size 499KB
  • Sample260910-kjdn6sak2y
  • SHA256 ff0cf47220014fa7550de865d22b962a67314da12436c1ff53fe4725c2017700
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
defense_evasiondiscoveryexecutionpersistenceprivilege_escalationransomwarespywarestealertrojan

Malware Config

Targets

    • Target
      WebCompanionInstaller.exe
    • Size 747KB
    • SHA256 be2a29b717564c78912fe6caab8a0d2f9484ef705fc23ca165550f522436a9fe
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    defense_evasiondiscoveryexecutionpersistenceprivilege_escalationransomwarespywarestealertrojan

    • Renames multiple (118) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Drops file in Drivers directory

    • Creates new service(s)

      persistenceexecution

    • Adds Run key to start application

      persistence

    • Checks computer location settings

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

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Command Shell

1
T1059.003

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Modify Registry

2
T1112

Subvert Trust Controls

2
T1553

Install Root Certificate

2
T1553.004

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

Peripheral Device Discovery

1
T1120

Query Registry

4
T1012

System Information Discovery

4
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks