Overview

overview

10

Static

static

3

2024-04-08...os.exe

windows7-x64

10

2024-04-08...os.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240319-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-04-2024 14:48

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General

  • Target

    2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos.exe

  • Size

    56KB

  • MD5

    a47951dfeddc650b43abe3a02502afc9

  • SHA1

    81418d88cb2dbbea442dd0b588b3f373e15ae949

  • SHA256

    5f2ad6172b35b5fcc40460af64e7c97ac5ee6726ddb8e7178fc5a6258c1e3a61

  • SHA512

    1c89e6b3a4dbda370da2dfd2abf587e0c00c9394a82b9353a7f7c8f64d31e490cce603840d2a8dc6c5556566e8f2778a7644d1d2874ef209289265a9ec0a0a54

  • SSDEEP

    1536:/NeRBl5PT/rx1mzwRMSTdLpJ6Z2tIDGKbC:/QRrmzwR5J7ISM

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 (394) 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\2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-08_a47951dfeddc650b43abe3a02502afc9_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:1764
    • C:\Users\Admin\AppData\Local\Temp\2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-04-08_a47951dfeddc650b43abe3a02502afc9_phobos.exe"
      2⤵
        PID:4200
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:928
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2864
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1504
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:3820
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4276
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:792
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1532
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1988
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4200
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3436
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1904
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:4472
      • 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=4572 --field-trial-handle=2320,i,3025503729105798828,9325691672526736153,262144 --variations-seed-version /prefetch:8
        1⤵
          PID:2524

        Network

        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

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\themes\dark\selection-actions.png
          Filesize

          1KB

          MD5

          eedd2d13e3671d589714446755b78b38

          SHA1

          2fdd23507187a259f5a7edb01611a37b6b09f4da

          SHA256

          467082e15a8ddefd51088e12a6189f9923dadfdf363ac1b0448ec43dc483cb3d

          SHA512

          ef47a62ce6ffb0c5b34b2c6d72f5874dbad4109b98aaa21f56b8b2d83471f5ebf983f6dfd889399abe4fead6296cf2ca3f409a4aa4badad8cc3c48f688323837

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        • C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\remove.svg
          Filesize

          1KB

          MD5

          b651e9101be833e87337050028831efd

          SHA1

          ee594ba38a6324369ffc7b4dc89407d3436e34d9

          SHA256

          4717e5fb82c0ee85a7c97d022f410990a62efa2492070e42385cfeab67afd619

          SHA512

          3552858c2a688c95a76c0bb8a6a76b119b744b2e8ae7e7f30135ccd8a145318762faa52c1783a639fb179056317caeaed20c15f211db1d45bc957bc3ce591aef

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        • C:\Program Files\7-Zip\7z.dll.id[D454CF83-2978].[[email protected]].faust
          Filesize

          2.5MB

          MD5

          1edafd533e239f008a8295682fce2fe7

          SHA1

          d52b5f4e686a64e776e3b9d5f5798e3e7359df31

          SHA256

          65a01109f848ce0d7cbd95216004941182a5245ca116a5c562d1216ae8ac8c08

          SHA512

          a410599a2e9516f6425462a7444be1cb432665dc92fcf3d1037df1121d49974f056d8d8de60259c52ef3821796d1ab35ef51802b9a711a693b6ab4ddad85a80f

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        • C:\Program Files\Java\jdk-1.8\legal\jdk\relaxngcc.md
          Filesize

          2KB

          MD5

          ddc4cb14453391bcb5f4d645b2916a6c

          SHA1

          c4738d174c90c285e17bf51a9218256f45f96ea7

          SHA256

          0c19ba9eeecab3cbbdf38da08c3fa0266f10ce8166e056715931efc543335eeb

          SHA512

          34a32b92ffb2945608439653b5ecacba49fd3312ba5487ba14796c75b07655f0d8f735453dac117d46d204d3f810126f8a189f82c015fa8bb6ea37d9b8e0e30f

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        • C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt
          Filesize

          190B

          MD5

          c5b7a97bda04c48435a145f2d1f9bb42

          SHA1

          bd94219a79987af3e4d4ce45b07edc2230aaf655

          SHA256

          07ec9bf950252d0254d4d778698c2e4173f36dbc3f57f51f34d1b85a07c2eab0

          SHA512

          7eb1a26cf8ef725ba6d1934ca4802f70cc22539017334c1d7a6873afeea6236bcd643b52630f7fa9d8a9e692f718ba42cc704ed5f8df17757028be63c3efad80

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        • C:\Program Files\Java\jre-1.8\lib\images\cursors\invalid32x32.gif
          Filesize

          153B

          MD5

          d13b5ffdeb538f15ee1d30f2788601d5

          SHA1

          8dc4da8e4efca07472b08b618bc059dcbfd03efa

          SHA256

          f1663cceeb67ba35c5a5cbf58b56050ddbe5ec5680ea9e55837b57524f29b876

          SHA512

          58e6b66d1e6a9858e3b2ff1c90333d804d80a98dad358bb666b0332013c0c0c7444d9cb7297eff3aeee7de66d01b3b180629f1b5258af19165abd5e013574b46

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        • C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Slipstream.xml
          Filesize

          744B

          MD5

          809457c05fe696f5d34ac5ac8768cdd4

          SHA1

          a2c3e4966415100c7d24f7f3dc7e27d2a60d20c9

          SHA256

          1b66520d471367f736d50c070a2e2bba8ad88ac58743394a764b888e9cb6f6be

          SHA512

          cf38e01d3e174ff4b8070fb88ead7e787143ce7cf60b91365fafd01cacc1420337654083a14dfb2caa900141a578717f5d24fa3cadd17c1a992d09280fd8dc44

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        • C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_F_COL.HXK
          Filesize

          114B

          MD5

          301657e2669b4c76979a15f801cc2adf

          SHA1

          f7430efc590e79b847ab97b6e429cd07ef886726

          SHA256

          802bbf1167e97e336bc7e1d1574466db744c7021efe0f0ff01ff7e352c44f56b

          SHA512

          e94480d20b6665599c4ed1bc3fc6949c9be332fd91a14cef14b3e263ab1000666e706b51869bc93b4f479bb6389351674e707e79562020510c1b6dfe4b90cc51

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        • C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_K_COL.HXK
          Filesize

          113B

          MD5

          b9205d5c0a413e022f6c36d4bdfa0750

          SHA1

          f16acd929b52b77b7dad02dbceff25992f4ba95e

          SHA256

          951b1c95584b91fd8776e1d26b25d745ad5d508f6337686b9f7131d7c2f7096a

          SHA512

          0e67910bcf0f9ccde5464c63b9c850a12a759227d16b040d98986d54253f9f34322318e56b8feb86c5fb2270ed87f31252f7f68493ee759743909bd75e4bb544

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        • C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\PersonaSpy.html
          Filesize

          1KB

          MD5

          3be680b6a8edfdeed37bf5068a37dccd

          SHA1

          75bc261fc558634731e683e431e4a31c5b463107

          SHA256

          1777e4f7955cb5900c97d92081efc4b11704ee3b265717a7d7152972b49a36c4

          SHA512

          a3c8a91689105a14c49b020826944d32540353c56fb9e9a011639ff5107d25e1d3466f0fc487ef953c6bbf0c006abc5204e3a8f0093e1c633013a547f8ecab21

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        • C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_96.db
          Filesize

          24B

          MD5

          1681ffc6e046c7af98c9e6c232a3fe0a

          SHA1

          d3399b7262fb56cb9ed053d68db9291c410839c4

          SHA256

          9d908ecfb6b256def8b49a7c504e6c889c4b0e41fe6ce3e01863dd7b61a20aa0

          SHA512

          11bb994b5d2eab48b18667c7d8943e82c9011cb1d974304b8f2b6247a7e6b7f55ca2f7c62893644c3728d17dafd74ae3ba46271cf6287bb9e751c779a26fefc5

          Download Submit