Resubmissions

28-07-2022 16:40

220728-t6m1ssaabp 10

16-01-2022 03:14

220116-drpcbafecl 10

Analysis

  • max time kernel
    81s
  • max time network
    87s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220722-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-07-2022 16:40

General

  • Target

    svchost.exe

  • Size

    213KB

  • MD5

    39f34aa65e3a95a53f3ec0675fc37905

  • SHA1

    b8206089a3841464c72ee695951854dfe08a82cd

  • SHA256

    8e7393013f240334efe2ca52c8a3554628c479becab2b691d114e1e8b3ccd51d

  • SHA512

    7c45d8ba6f080cccaaa3c663d44a796c077f786f48cd392bcb9fa7e60d3b424aa90ecb1ed3c1c810b1607610db42a59eb0a9cc452579e454ca6443b2b249b2cb

Score
9/10

Malware Config

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "vssadmin delete shadows /all /quiet"
      2⤵
        PID:860
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c "wbadmin DELETE SYSTEMSTATEBACKUP -keepVersions:0"
        2⤵
          PID:4988
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "wbadmin DELETE BACKUP -keepVersions:0"
          2⤵
            PID:3812
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c "wmic SHADOWCOPY DELETE"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4536
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic SHADOWCOPY DELETE
              3⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1948
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c "bcdedit /set {default} recoveryenabled No"
            2⤵
              PID:2348
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c "bcdedit /set {default} bootstatuspolicy ignoreallfailures"
              2⤵
                PID:4804
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 31104
                2⤵
                • Program crash
                PID:12052
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1332
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1980 -ip 1980
              1⤵
                PID:12004

              Network

              MITRE ATT&CK Matrix ATT&CK v6

              Defense Evasion

              File Deletion

              1
              T1107

              Discovery

              Query Registry

              1
              T1012

              System Information Discovery

              2
              T1082

              Impact

              Inhibit System Recovery

              1
              T1490

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • memory/860-135-0x0000000000000000-mapping.dmp
              • memory/1948-141-0x0000000000000000-mapping.dmp
              • memory/2348-139-0x0000000000000000-mapping.dmp
              • memory/3812-137-0x0000000000000000-mapping.dmp
              • memory/4536-138-0x0000000000000000-mapping.dmp
              • memory/4804-140-0x0000000000000000-mapping.dmp
              • memory/4988-136-0x0000000000000000-mapping.dmp