Overview

overview

10

Static

static

3

Readme.exe

windows7-x64

10

Readme.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Readme.txt

  • Size

    58KB

  • Sample

    231031-h3t46abc76

  • MD5

    d458a2f85bc1330f13acccd63d88d015

  • SHA1

    2604402597e41faa97db737fe0fb4166864752ad

  • SHA256

    0b997e8b0d0ff6cc4e6f1919c6c0f3080eaa0d08c8fccdf50f7648bf05cca446

  • SHA512

    5e89c3541022d31df8d7d2b15522734649796428ba6842182ab59988d3ea5679e1f8b2903b4e7646785c46c8d41b5e99031a4875a340e9be84362b63797e1c99

  • SSDEEP

    1536:hNeRBl5PT/rx1mzwRMSTdLpJ5mwnf+viID/:hQRrmzwR5JUD/

Score
10/10
phobosevasionpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      Readme.txt

    • Size

      58KB

    • MD5

      d458a2f85bc1330f13acccd63d88d015

    • SHA1

      2604402597e41faa97db737fe0fb4166864752ad

    • SHA256

      0b997e8b0d0ff6cc4e6f1919c6c0f3080eaa0d08c8fccdf50f7648bf05cca446

    • SHA512

      5e89c3541022d31df8d7d2b15522734649796428ba6842182ab59988d3ea5679e1f8b2903b4e7646785c46c8d41b5e99031a4875a340e9be84362b63797e1c99

    • SSDEEP

      1536:hNeRBl5PT/rx1mzwRMSTdLpJ5mwnf+viID/:hQRrmzwR5JUD/

    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 (308) files with added filename extension

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

      ransomware

    • Renames multiple (441) 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

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

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