Overview

overview

10

Static

static

3

2024-04-08...os.exe

windows7-x64

10

2024-04-08...os.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos

  • Size

    56KB

  • Sample

    240408-r6sj6sbg66

  • MD5

    a47951dfeddc650b43abe3a02502afc9

  • SHA1

    81418d88cb2dbbea442dd0b588b3f373e15ae949

  • SHA256

    5f2ad6172b35b5fcc40460af64e7c97ac5ee6726ddb8e7178fc5a6258c1e3a61

  • SHA512

    1c89e6b3a4dbda370da2dfd2abf587e0c00c9394a82b9353a7f7c8f64d31e490cce603840d2a8dc6c5556566e8f2778a7644d1d2874ef209289265a9ec0a0a54

  • SSDEEP

    1536:/NeRBl5PT/rx1mzwRMSTdLpJ6Z2tIDGKbC:/QRrmzwR5J7ISM

Score
10/10
phobosevasionpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos

    • Size

      56KB

    • MD5

      a47951dfeddc650b43abe3a02502afc9

    • SHA1

      81418d88cb2dbbea442dd0b588b3f373e15ae949

    • SHA256

      5f2ad6172b35b5fcc40460af64e7c97ac5ee6726ddb8e7178fc5a6258c1e3a61

    • SHA512

      1c89e6b3a4dbda370da2dfd2abf587e0c00c9394a82b9353a7f7c8f64d31e490cce603840d2a8dc6c5556566e8f2778a7644d1d2874ef209289265a9ec0a0a54

    • SSDEEP

      1536:/NeRBl5PT/rx1mzwRMSTdLpJ6Z2tIDGKbC:/QRrmzwR5J7ISM

    Score
    10/10
    phobosevasionpersistenceransomwarespywarestealer

    • Phobos

      Phobos ransomware appeared at the beginning of 2019.

      ransomwarephobos

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (300) 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 Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

4
T1490

Resource Development

Reconnaissance

Tasks