Resubmissions

28-07-2024 18:23

240728-w1kdtsxcll 10

28-07-2024 16:49

240728-vbwj5axckg 10

Analysis

  • max time kernel
    20s
  • max time network
    73s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-07-2024 18:23

General

  • Target

    4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea.exe

  • Size

    72KB

  • MD5

    fcb76d19b9003bd5522c6da0703175d5

  • SHA1

    99b5b69c4c3c6946162c1239ddbfa6e366cce3e3

  • SHA256

    4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea

  • SHA512

    dc08946159c732d367fa9a2f603eca3ec994eb37c962141bdf91bdd39f136998d560ba45ed307db4527386f85db4c002682d7b55b7a880d345ef613afd49fdce

  • SSDEEP

    1536:lNeRBl5PT/rx1mzwRMSTdLpJSVJaaw38x6S3hT3GCq2iW7z:lQRrmzwR5J7UthDGCH

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • 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\4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea.exe
    "C:\Users\Admin\AppData\Local\Temp\4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:612
    • C:\Users\Admin\AppData\Local\Temp\DaGvPt.exe
      C:\Users\Admin\AppData\Local\Temp\DaGvPt.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:3480
    • C:\Users\Admin\AppData\Local\Temp\4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea.exe
      "C:\Users\Admin\AppData\Local\Temp\4ff314143f6fea359946a81034ec04a4f515998fc23c6937bc5d032b02f01bea.exe"
      2⤵
        PID:2544
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2564
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:4608
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1736
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3836
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4964
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
            PID:3576
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} bootstatuspolicy ignoreallfailures
            3⤵
            • Modifies boot configuration data using bcdedit
            PID:4516
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} recoveryenabled no
            3⤵
            • Modifies boot configuration data using bcdedit
            PID:1816
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            3⤵
            • Deletes backup catalog
            PID:1784
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:740
      • C:\Windows\system32\wbengine.exe
        "C:\Windows\system32\wbengine.exe"
        1⤵
          PID:4064
        • C:\Windows\System32\vdsldr.exe
          C:\Windows\System32\vdsldr.exe -Embedding
          1⤵
            PID:400
          • C:\Windows\System32\vds.exe
            C:\Windows\System32\vds.exe
            1⤵
              PID:2224

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Program Files\7-Zip\7z.dll.id[E11F5E90-3368].[[email protected]].Elbie

              Filesize

              2.5MB

              MD5

              847da407c55bfc1da3385fb8eae1c1ac

              SHA1

              c2b82c3e683e99dfd455f582d053067cfa422873

              SHA256

              bec812b202f85dfde1ee9dad285c22e3f6e42c99f831bd2e80b9d37b68e3ccbe

              SHA512

              f28bb3e99683c94d176e206c0198d350e632ab5507adcc8ed3689b03072cb2f802da565822002e3b81c2ccb07184622860accca20cfb37c5858b34315ed7e238

            • C:\Program Files\7-Zip\Uninstall.exe

              Filesize

              31KB

              MD5

              50615dd05bb46aafc9490a7c48391314

              SHA1

              d955e44ff63fda3f9b18f19aa72cbba43a5d8e44

              SHA256

              4fa7abf3016b4fce22b2ef413654a5ef60fd6a75cce4b6e7aeedf3cf46dde806

              SHA512

              db29f2204faeac580799cbd65346d83a7c74d5b7239dcd761287324f8aae27cafe7b7b19ab0a2d94580d34a74278faaab141a07e620699be4b96da36c8bd6e11

            • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\I0E3LJN0\k2[1].rar

              Filesize

              4B

              MD5

              d3b07384d113edec49eaa6238ad5ff00

              SHA1

              f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

              SHA256

              b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

              SHA512

              0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

            • C:\Users\Admin\AppData\Local\Temp\4BD2747B.exe

              Filesize

              4B

              MD5

              20879c987e2f9a916e578386d499f629

              SHA1

              c7b33ddcc42361fdb847036fc07e880b81935d5d

              SHA256

              9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

              SHA512

              bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

            • C:\Users\Admin\AppData\Local\Temp\DaGvPt.exe

              Filesize

              15KB

              MD5

              f7d21de5c4e81341eccd280c11ddcc9a

              SHA1

              d4e9ef10d7685d491583c6fa93ae5d9105d815bd

              SHA256

              4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794

              SHA512

              e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3

            • memory/612-0-0x0000000000F80000-0x0000000000F98000-memory.dmp

              Filesize

              96KB

            • memory/612-815-0x0000000000F80000-0x0000000000F98000-memory.dmp

              Filesize

              96KB

            • memory/2544-7-0x0000000000F80000-0x0000000000F98000-memory.dmp

              Filesize

              96KB

            • memory/3480-4-0x0000000000AA0000-0x0000000000AA9000-memory.dmp

              Filesize

              36KB

            • memory/3480-171-0x0000000000AA0000-0x0000000000AA9000-memory.dmp

              Filesize

              36KB