Analysis

  • max time kernel
    6s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    03-01-2024 15:32

General

  • Target

    f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd.exe

  • Size

    55KB

  • MD5

    88389a265bd9b1e9c59fb7053cf45b07

  • SHA1

    900b980b7ef5bbbc6a255cffd66900fb68802c25

  • SHA256

    f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd

  • SHA512

    da2ebf446db76590834e3b8e828e3895e0febdfa0ee34627b5c6c18cc10ccb85b83dd0410789845c980984eb1021a6c7050ebf1cbfd04e1ce904e0e40113e932

  • SSDEEP

    1536:ENeRBl5PT/rx1mzwRMSTdLpJMGl5dPZjlkWBFj:EQRrmzwR5J1VPZiW

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 4 IoCs
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Drops startup file 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
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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\f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd.exe
    "C:\Users\Admin\AppData\Local\Temp\f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd.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:2724
    • C:\Users\Admin\AppData\Local\Temp\f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd.exe
      "C:\Users\Admin\AppData\Local\Temp\f146915a0298daff26ffe85a42b9a9ef68e7a148e3dbe3bc43abb283d96facbd.exe"
      2⤵
        PID:2300
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2920
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
            PID:2260
          • C:\Windows\system32\wbadmin.exe
            wbadmin delete catalog -quiet
            3⤵
            • Deletes backup catalog
            PID:1904
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} recoveryenabled no
            3⤵
            • Modifies boot configuration data using bcdedit
            PID:1036
          • C:\Windows\system32\bcdedit.exe
            bcdedit /set {default} bootstatuspolicy ignoreallfailures
            3⤵
            • Modifies boot configuration data using bcdedit
            PID:672
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2356
          • C:\Windows\system32\netsh.exe
            netsh firewall set opmode mode=disable
            3⤵
            • Modifies Windows Firewall
            PID:2152
        • C:\Windows\SysWOW64\mshta.exe
          "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
          2⤵
            PID:1360
          • C:\Windows\SysWOW64\mshta.exe
            "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
            2⤵
              PID:2884
            • C:\Windows\system32\cmd.exe
              "C:\Windows\system32\cmd.exe"
              2⤵
                PID:2228
              • C:\Windows\SysWOW64\mshta.exe
                "C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"
                2⤵
                  PID:1172
                • C:\Windows\SysWOW64\mshta.exe
                  "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
                  2⤵
                    PID:2260
                • C:\Windows\system32\vssadmin.exe
                  vssadmin delete shadows /all /quiet
                  1⤵
                  • Interacts with shadow copies
                  PID:2584
                • C:\Windows\system32\netsh.exe
                  netsh advfirewall set currentprofile state off
                  1⤵
                  • Modifies Windows Firewall
                  PID:2820
                • C:\Windows\system32\vssvc.exe
                  C:\Windows\system32\vssvc.exe
                  1⤵
                    PID:1472
                  • C:\Windows\system32\wbengine.exe
                    "C:\Windows\system32\wbengine.exe"
                    1⤵
                      PID:1696
                    • C:\Windows\System32\vdsldr.exe
                      C:\Windows\System32\vdsldr.exe -Embedding
                      1⤵
                        PID:2004
                      • C:\Windows\System32\vds.exe
                        C:\Windows\System32\vds.exe
                        1⤵
                          PID:2632
                        • C:\Windows\system32\vssadmin.exe
                          vssadmin delete shadows /all /quiet
                          1⤵
                          • Interacts with shadow copies
                          PID:1052
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic shadowcopy delete
                          1⤵
                            PID:392
                          • C:\Windows\system32\wbadmin.exe
                            wbadmin delete catalog -quiet
                            1⤵
                            • Deletes backup catalog
                            PID:1112
                          • C:\Windows\system32\bcdedit.exe
                            bcdedit /set {default} recoveryenabled no
                            1⤵
                            • Modifies boot configuration data using bcdedit
                            PID:2712
                          • C:\Windows\system32\bcdedit.exe
                            bcdedit /set {default} bootstatuspolicy ignoreallfailures
                            1⤵
                            • Modifies boot configuration data using bcdedit
                            PID:324

                          Network

                          MITRE ATT&CK Enterprise v15

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