Overview

overview

10

Static

static

3

43f846c12c...fc.exe

windows10-ltsc_2021-x64

43f846c12c...fc.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.zip
  • Size 39KB
  • Sample260502-tm918af14k
  • SHA256 cb44f0049c0bb10c13da020110a9e66a15cbf14448967093f5822e93a9748eb8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
phobosadwarecredential_accessdefense_evasiondiscoveryevasionexecutionimpactpersistenceprivilege_escalationransomwarespywarestealertrojan

Malware Config

Targets

    • Target
      43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe
    • Size 55KB
    • SHA256 43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    credential_accessdefense_evasiondiscoveryevasionexecutionphobosimpactpersistenceprivilege_escalationransomwarespywarestealeradwaretrojan

    • Family: Phobos

      Phobos ransomware appeared at the beginning of 2019.

      ransomwarephobos

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (804) files with added filename extension

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

      ransomware

    • 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

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Modifies Windows Firewall

      defense_evasion

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Management Instrumentation

1
T1047

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

Event Triggered Execution

2
T1546

Component Object Model Hijacking

1
T1546.015

Netsh Helper DLL

1
T1546.007

Privilege Escalation

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

Event Triggered Execution

2
T1546

Component Object Model Hijacking

1
T1546.015

Netsh Helper DLL

1
T1546.007

Defense Evasion

Direct Volume Access

1
T1006

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

6
T1112

Subvert Trust Controls

1
T1553

SIP and Trust Provider Hijacking

1
T1553.003

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

2
T1120

Query Registry

7
T1012

System Information Discovery

7
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

4
T1490

Tasks