Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2023 07:16

General

  • Target

    f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe

  • Size

    414KB

  • MD5

    d8b6ce65fe360d7cd880237fe445de24

  • SHA1

    c0a29ad9ade648cca94e67b0dca6f7814202dda5

  • SHA256

    f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467

  • SHA512

    aa3b50bfc26da4a4b34a7d81daf9b9928a7116252dfe1c0f7999ac114c1895d38f7df6b5938efbd7f60b7c8a6ce34aeb645628e1a57178a62645c874377d4824

  • SSDEEP

    6144:tEidtIJgPmKItsSTBr6hZUSPu8cL1G18grxLOZu2yjQDr9oHSMGFcZ6OMuW:tTIJgKslhqSPAL1GSgrSu28a5GSFcZ

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Renames multiple (294) files with added filename extension

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

  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 4 IoCs
  • Suspicious use of SetThreadContext 2 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of WriteProcessMemory 38 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.

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
    "C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
      C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
      2⤵
      • 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:4928
      • C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
        "C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2684
        • C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
          C:\Users\Admin\AppData\Local\Temp\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe
          4⤵
            PID:4908
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2256
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:3776
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4176
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} bootstatuspolicy ignoreallfailures
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:4124
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} recoveryenabled no
            4⤵
            • Modifies boot configuration data using bcdedit
            PID:2972
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            4⤵
            • Deletes backup catalog
            PID:4828
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2072
          • C:\Windows\system32\netsh.exe
            netsh advfirewall set currentprofile state off
            4⤵
            • Modifies Windows Firewall
            PID:4528
          • C:\Windows\system32\netsh.exe
            netsh firewall set opmode mode=disable
            4⤵
            • Modifies Windows Firewall
            PID:2640
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:756
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:288
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:4164
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:4236

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id[F3745F06-3483].[[email protected]].8base

        Filesize

        3.2MB

        MD5

        3f8e5ba19fb5115f8ec4d15daf70ebd4

        SHA1

        b5c7c87a00802ea78ff7458adc46b11501b52825

        SHA256

        4c6e0cf829ebb23d00474fadf0cc10825cbd48bfed05939bf580ceef21710a82

        SHA512

        29d4e857518285b848eed1f6949c133df6715a5402d7fdd781e8c9768e7520657945419d344a583c7f60459b0dd3e078a4d661ba0e77fa2af7387801772b2644

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\f709d1f84e4f0a845ebb4a9fb1500aa2a9fd600e97cbea32ffc3e49c1084f467.exe.log

        Filesize

        927B

        MD5

        4a911455784f74e368a4c2c7876d76f4

        SHA1

        a1700a0849ffb4f26671eb76da2489946b821c34

        SHA256

        264098e15b5b33d425f3b76e45b7976b58f917048125041135f7e60d8151108c

        SHA512

        4617591400409e1930195795a55e20d5f063042bb3e9fd1955099066e507b6ac8a1e3ae54cc42418e2639149b31bf7e58cd5743670d9030a15e29f14d813815d

      • memory/1788-6-0x0000000005DF0000-0x0000000006394000-memory.dmp

        Filesize

        5.6MB

      • memory/1788-3-0x0000000005740000-0x0000000005750000-memory.dmp

        Filesize

        64KB

      • memory/1788-4-0x0000000005750000-0x0000000005784000-memory.dmp

        Filesize

        208KB

      • memory/1788-5-0x0000000005790000-0x00000000057DC000-memory.dmp

        Filesize

        304KB

      • memory/1788-2-0x00000000056D0000-0x0000000005716000-memory.dmp

        Filesize

        280KB

      • memory/1788-11-0x00000000749C0000-0x0000000075170000-memory.dmp

        Filesize

        7.7MB

      • memory/1788-0-0x0000000000CF0000-0x0000000000D5E000-memory.dmp

        Filesize

        440KB

      • memory/1788-1-0x00000000749C0000-0x0000000075170000-memory.dmp

        Filesize

        7.7MB

      • memory/2684-19-0x0000000074A60000-0x0000000075210000-memory.dmp

        Filesize

        7.7MB

      • memory/2684-14-0x0000000074A60000-0x0000000075210000-memory.dmp

        Filesize

        7.7MB

      • memory/2684-15-0x0000000005140000-0x0000000005150000-memory.dmp

        Filesize

        64KB

      • memory/4908-20-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-37-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-94-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-31-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-32-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-33-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-35-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-43-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-42-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-10-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-57-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-56-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-41-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-40-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-93-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-106-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-12-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-105-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-165-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-203-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-195-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-189-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-151-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-7-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-204-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-255-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-312-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-827-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-1009-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-1717-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/4928-1739-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB