Analysis

  • max time kernel
    175s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-10-2023 05:52

General

  • Target

    91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe

  • Size

    1.7MB

  • MD5

    2519f369f426e4d2cdd88290d1c25d3c

  • SHA1

    e464001902893ab6aea89b8ccfc66f9eb1d45988

  • SHA256

    91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4

  • SHA512

    bedda8d51127c186946cdb3755f9bcc049a0efc308ed645de52d58cdffa8fad85778e4a77338f1c3d68bd2b725ff68e5829a4bba8879983f7380df350754d443

  • SSDEEP

    24576:4E6seIAzWNS0LSaN9EBrx+dbsOCK/91/oc1EDnbLmVrkfvDUdhu3z7L/40NM+Sf2:tKpCSrEdbsOn/4sEDnB3z7E0CzzK

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 (141) 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 44 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\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
    "C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2560
    • C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
      C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.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:1772
      • C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
        "C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2728
        • C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
          C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
          4⤵
            PID:3952
          • C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
            C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
            4⤵
              PID:4640
            • C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
              C:\Users\Admin\AppData\Local\Temp\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe
              4⤵
                PID:1048
            • C:\Windows\system32\cmd.exe
              "C:\Windows\system32\cmd.exe"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:1868
              • C:\Windows\system32\vssadmin.exe
                vssadmin delete shadows /all /quiet
                4⤵
                • Interacts with shadow copies
                PID:1716
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic shadowcopy delete
                4⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:1176
              • C:\Windows\system32\bcdedit.exe
                bcdedit /set {default} bootstatuspolicy ignoreallfailures
                4⤵
                • Modifies boot configuration data using bcdedit
                PID:4604
              • C:\Windows\system32\bcdedit.exe
                bcdedit /set {default} recoveryenabled no
                4⤵
                • Modifies boot configuration data using bcdedit
                PID:1808
              • C:\Windows\system32\wbadmin.exe
                wbadmin delete catalog -quiet
                4⤵
                • Deletes backup catalog
                PID:288
            • C:\Windows\system32\cmd.exe
              "C:\Windows\system32\cmd.exe"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:3828
              • C:\Windows\system32\netsh.exe
                netsh advfirewall set currentprofile state off
                4⤵
                • Modifies Windows Firewall
                PID:2268
              • C:\Windows\system32\netsh.exe
                netsh firewall set opmode mode=disable
                4⤵
                • Modifies Windows Firewall
                PID:3836
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3480
        • C:\Windows\system32\wbengine.exe
          "C:\Windows\system32\wbengine.exe"
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1920
        • C:\Windows\System32\vdsldr.exe
          C:\Windows\System32\vdsldr.exe -Embedding
          1⤵
            PID:3804
          • C:\Windows\System32\vds.exe
            C:\Windows\System32\vds.exe
            1⤵
            • Checks SCSI registry key(s)
            PID:4548

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id[6C1B872D-3483].[[email protected]].8base
            Filesize

            3.2MB

            MD5

            c56f0064890524e10bb89116129ed30f

            SHA1

            85f82b446fdd0ebd00872c301d562821e5d9f32d

            SHA256

            3277923e5e25917ba8810cfc23668de028508439cd5fe8180636e951b742beca

            SHA512

            08e87599ad93581556145d1449f8494435d586c68a148a2b7378c88a2fb7702559d6c91879f0475fb9827af8ab6e81186d79a7f15059f4b7edd87ccd0fe1feeb

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\91abe280381d0faf55b521f51d16d8aa022f0cc14b1310334d4fffc3474459d4.exe.log
            Filesize

            1016B

            MD5

            4353288293ab8929e492327245a7ccb2

            SHA1

            89b365f2f5e14faaf17715e5764b60d344250d67

            SHA256

            61954fc5184dd88a959f803ee98ca9af53eb0c942dbb00b98ba4f8a46081b587

            SHA512

            48c07ca1b769cf02af6ec938aad8b5a03133e82a451bdff5a03bf4ba47cfd7add0ab28ee6622c22fb54e127472a7cf68dd7d05da15ec439cc18aed2ca76cd08a

          • memory/1772-10-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-12-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-83-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-168-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-606-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-193-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-169-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-38-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-36-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-558-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-13-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-44-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-1374-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-77-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-45-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-43-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-40-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-33-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/1772-35-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB

          • memory/2560-9-0x0000000005FE0000-0x0000000006584000-memory.dmp
            Filesize

            5.6MB

          • memory/2560-5-0x0000000005900000-0x000000000594E000-memory.dmp
            Filesize

            312KB

          • memory/2560-1-0x0000000074400000-0x0000000074BB0000-memory.dmp
            Filesize

            7.7MB

          • memory/2560-2-0x00000000052D0000-0x0000000005362000-memory.dmp
            Filesize

            584KB

          • memory/2560-3-0x0000000005220000-0x0000000005230000-memory.dmp
            Filesize

            64KB

          • memory/2560-15-0x0000000074400000-0x0000000074BB0000-memory.dmp
            Filesize

            7.7MB

          • memory/2560-0-0x0000000000770000-0x0000000000932000-memory.dmp
            Filesize

            1.8MB

          • memory/2560-8-0x00000000059E0000-0x0000000005A2C000-memory.dmp
            Filesize

            304KB

          • memory/2560-7-0x0000000005990000-0x00000000059C4000-memory.dmp
            Filesize

            208KB

          • memory/2560-6-0x0000000005950000-0x0000000005986000-memory.dmp
            Filesize

            216KB

          • memory/2560-4-0x0000000005370000-0x000000000549C000-memory.dmp
            Filesize

            1.2MB

          • memory/2728-17-0x00000000744A0000-0x0000000074C50000-memory.dmp
            Filesize

            7.7MB

          • memory/2728-18-0x00000000057C0000-0x00000000057D0000-memory.dmp
            Filesize

            64KB

          • memory/2728-24-0x00000000744A0000-0x0000000074C50000-memory.dmp
            Filesize

            7.7MB

          • memory/4640-25-0x0000000000400000-0x0000000000413000-memory.dmp
            Filesize

            76KB