Overview

overview

10

Static

static

3

2024-05-22...os.exe

windows7-x64

10

2024-05-22...os.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    2024-05-22_731066cbba8733b1978aed3338721753_phobos
  • Size 56KB
  • Sample240522-becfwafd53
  • SHA256 a8b59f5025d268a3dee891a8b991f66dcee7cb35b3d296e38a86631b835cf303
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
phobosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target
      2024-05-22_731066cbba8733b1978aed3338721753_phobos
    • Size 56KB
    • SHA256 a8b59f5025d268a3dee891a8b991f66dcee7cb35b3d296e38a86631b835cf303
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    phobosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

    • 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 (309) files with added filename extension

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

      ransomware

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Modifies Windows Firewall

      evasion

    • Drops startup file

    • 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

    • Drops desktop.ini file(s)

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Management Instrumentation

1
T1047

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

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

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

4
T1490

Tasks