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

  • MD5

    9a0b31d23cb17d47e70187398a873e4a

  • SHA1

    abd0c3ca6ba64c8e046078c3d5ef69afb9ab53c1

  • SHA256

    f5fa627b43bd6206e7890d4abbeb2473d04b267ef86f8cab517fbbfd97cb8fee

  • SHA512

    ce84261a71b842b74da8883586badf220416f8968c904d57e068b9fd35a09c9d4d5711077fb33b4787f28e86aa6252db574cce567f1acecf5c878b9c7dba477f

  • SSDEEP

    1536:fNeRBl5PT/rx1mzwRMSTdLpJk44FhbMEBciCCR:fQRrmzwR5Jhmg2cinR

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 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\CompressSplit.sql
          Filesize

          967KB

          MD5

          9e4ffe89cce4b3feeb11918bef1c6a4d

          SHA1

          21084747c2270d90427bfc0a69c1539279cd4ec6

          SHA256

          fbda6a45614f2ce5cf8c792b71c2801145780ac598d8ff797ce5041d1c59d96f

          SHA512

          aeb32e68e7c32db7e826fef40d32e40f56022e846fe37d9a046c08f528061ef2272ff8d8fccf6282818ee50533ac62ca101960cc22e8c1f8149853afef4a37de

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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