Overview

overview

10

Static

static

3

2024-04-10...os.exe

windows7-x64

10

2024-04-10...os.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    164s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240319-en
  • resource tags

    arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
  • submitted
    10-04-2024 18:47

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General

  • Target

    2024-04-10_ab604ecb0bcf773d4759437cf693ac91_phobos.exe

  • Size

    56KB

  • MD5

    ab604ecb0bcf773d4759437cf693ac91

  • SHA1

    4c5b8eac84291d3cf73277e2fc9b2c16b21103ec

  • SHA256

    43194ae25598e6c4d666faad94757c3122c42401bdac1a3be8926b07fe6854db

  • SHA512

    248c6e1b394aaf85c96d82dc3302a5245b19ac31edeb944e5e9208546ebbf05656e728b252b0f3d7ab6b4b598e7ede90ce7cc1ba4a1357c76f7527e9288f161f

  • SSDEEP

    1536:BNeRBl5PT/rx1mzwRMSTdLpJwyE2lYkh8:BQRrmzwR5JLh

Score
10/10
phobosevasionpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Renames multiple (275) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 14 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-10_ab604ecb0bcf773d4759437cf693ac91_phobos.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_ab604ecb0bcf773d4759437cf693ac91_phobos.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2932
    • C:\Users\Admin\AppData\Local\Temp\2024-04-10_ab604ecb0bcf773d4759437cf693ac91_phobos.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-04-10_ab604ecb0bcf773d4759437cf693ac91_phobos.exe"
      2⤵
        PID:2964
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2564
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:2580
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1616
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2660
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2528
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1904
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2572
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:3016
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1228
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2536
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1988
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:2208
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:1692

        Network

        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

        Impair Defenses

        1
        T1562

        Disable or Modify System Firewall

        1
        T1562.004

        Indicator Removal

        3
        T1070

        File Deletion

        3
        T1070.004

        Modify Registry

        1
        T1112

        Credential Access

        Unsecured Credentials

        1
        T1552

        Credentials In Files

        1
        T1552.001

        Discovery

        Query Registry

        1
        T1012

        Lateral Movement

        Collection

        Data from Local System

        1
        T1005

        Command and Control

        Exfiltration

        Impact

        Inhibit System Recovery

        4
        T1490

        Replay Monitor

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        Downloads

        • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPsWW2.cab.id[10173E14-3412].[[email protected]].Elbie
          Filesize

          189.5MB

          MD5

          1d11eae062cd6f5c567b4e687c86774e

          SHA1

          e12430e8a81b23a7c5d1781d76390a7775b3bed7

          SHA256

          695238b5abbe5bd595a25dbb4c79e913aadae7228284d0020be152e5df4b10ca

          SHA512

          06d2df185e7103953854a16e6599893001c4a240e8122576faeefd2b5f713056965ac4738536d532c220ce52f4463d8a09ba48b8fa1afb6d87b662de92662330

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