Overview

overview

10

Static

static

3

2024-04-09...os.exe

windows7-x64

10

2024-04-09...os.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 11:42

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General

  • Target
    2024-04-09_9a0b31d23cb17d47e70187398a873e4a_phobos.exe
  • Size 58KB
  • Sample240409-nt78bahc8y
  • SHA256 f5fa627b43bd6206e7890d4abbeb2473d04b267ef86f8cab517fbbfd97cb8fee
  • MD5 SHA1 SHA512 SSDEEP
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 (293) 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) 4 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • 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 49 IoCs
  • Suspicious use of WriteProcessMemory 18 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\2024-04-09_9a0b31d23cb17d47e70187398a873e4a_phobos.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-09_9a0b31d23cb17d47e70187398a873e4a_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:2412
    • C:\Users\Admin\AppData\Local\Temp\2024-04-09_9a0b31d23cb17d47e70187398a873e4a_phobos.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-04-09_9a0b31d23cb17d47e70187398a873e4a_phobos.exe"
      2⤵
        PID:4548
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5000
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:2804
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:2808
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:544
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4908
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4880
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4324
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4176
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:3352
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4944
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1240
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1548
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:268
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1312 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:3188

        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

              Peripheral Device Discovery

              1
              T1120

              Query Registry

              2
              T1012

              System Information Discovery

              1
              T1082

              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

              CompressSplit.sql
              • Path C:\Program Files\CompressSplit.sql
              • Size 967KB
              • SHA256 fbda6a45614f2ce5cf8c792b71c2801145780ac598d8ff797ce5041d1c59d96f
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              relaxngcc.md
              • Path C:\Program Files\Java\jdk-1.8\legal\jdk\relaxngcc.md
              • Size 2KB
              • SHA256 0c19ba9eeecab3cbbdf38da08c3fa0266f10ce8166e056715931efc543335eeb
              • MD5 SHA1 SHA512
              Submit Download

              THIRDPARTYLICENSEREADME-JAVAFX.txt
              • Path C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt
              • Size 190B
              • SHA256 07ec9bf950252d0254d4d778698c2e4173f36dbc3f57f51f34d1b85a07c2eab0
              • MD5 SHA1 SHA512
              Submit Download

              invalid32x32.gif
              • Path C:\Program Files\Java\jre-1.8\lib\images\cursors\invalid32x32.gif
              • Size 153B
              • SHA256 f1663cceeb67ba35c5a5cbf58b56050ddbe5ec5680ea9e55837b57524f29b876
              • MD5 SHA1 SHA512
              Submit Download

              Slipstream.xml
              • Path C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Slipstream.xml
              • Size 744B
              • SHA256 1b66520d471367f736d50c070a2e2bba8ad88ac58743394a764b888e9cb6f6be
              • MD5 SHA1 SHA512
              Submit Download

              POWERPNT_F_COL.HXK
              • Path C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_F_COL.HXK
              • Size 114B
              • SHA256 802bbf1167e97e336bc7e1d1574466db744c7021efe0f0ff01ff7e352c44f56b
              • MD5 SHA1 SHA512
              Submit Download

              POWERPNT_K_COL.HXK
              • Path C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_K_COL.HXK
              • Size 113B
              • SHA256 951b1c95584b91fd8776e1d26b25d745ad5d508f6337686b9f7131d7c2f7096a
              • MD5 SHA1 SHA512
              Submit Download

              PersonaSpy.html
              • Path C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\PersonaSpy.html
              • Size 1KB
              • SHA256 1777e4f7955cb5900c97d92081efc4b11704ee3b265717a7d7152972b49a36c4
              • MD5 SHA1 SHA512
              Submit Download

              iconcache_96.db
              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_96.db
              • Size 24B
              • SHA256 9d908ecfb6b256def8b49a7c504e6c889c4b0e41fe6ce3e01863dd7b61a20aa0
              • MD5 SHA1 SHA512
              Submit Download