Resubmissions

12-02-2023 06:08

230212-gwaw9shf55 10

02-02-2023 03:07

230202-dmra4see74 10

Analysis

  • max time kernel
    138s
  • max time network
    190s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    12-02-2023 06:08

General

  • Target

    PZCheat.exe

  • Size

    1.5MB

  • MD5

    164ba5ee6f6b30539e874248ccfa4c05

  • SHA1

    6b14ed8dab712359453779f2896e1cbad78871d7

  • SHA256

    fc7ca5dbd9e3d228416ea9725c7283d105d75533f7a4e069d89f2632840e1a5d

  • SHA512

    c9b2eef0e4499832f9c4eca8b503f17f4cc7589d0d2b12fe82572ad5df23e85cef9267bdc24928b7ac6df0fff70fe49d2422d6e9a549f07a74c8f9bd47892cfc

  • SSDEEP

    24576:B2G/nvxW3WLRnhzLfSRyBWkNUk9tJIzxIq2+kt3S5wFAiQuwV4ilByjNTVu1:BbA3+p9SRyBW0Tty2E5wFzQuo4iupRu1

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Process spawned unexpected child process 15 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 4 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 15 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PZCheat.exe
    "C:\Users\Admin\AppData\Local\Temp\PZCheat.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\surrogateContainerhostcrtDll\qAjDBhKogos2S0J68ty6.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1380
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\surrogateContainerhostcrtDll\fba6WO2dA9UqWb6NlbxSa.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:888
        • C:\surrogateContainerhostcrtDll\containersavesCrt.exe
          "C:\surrogateContainerhostcrtDll\containersavesCrt.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1984
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ZdpG9cvkU5.bat"
            5⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1416
            • C:\Windows\SysWOW64\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:1636
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                7⤵
                  PID:2036
              • C:\Users\Default\Downloads\lsass.exe
                "C:\Users\Default\Downloads\lsass.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of NtSetInformationThreadHideFromDebugger
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:468
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 10 /tr "'C:\Windows\Logs\DPX\cmd.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1828
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Windows\Logs\DPX\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1940
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 12 /tr "'C:\Windows\Logs\DPX\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Windows\Microsoft.NET\assembly\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:268
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Microsoft.NET\assembly\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:384
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Windows\Microsoft.NET\assembly\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1980
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows NT\Accessories\fr-FR\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:912
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\fr-FR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1512
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows NT\Accessories\fr-FR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1920
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\Recovery\c11c4da2-1a8a-11ed-8505-e0b24281b398\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1264
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\c11c4da2-1a8a-11ed-8505-e0b24281b398\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1308
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Recovery\c11c4da2-1a8a-11ed-8505-e0b24281b398\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Downloads\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1120
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Default\Downloads\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:316
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Downloads\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1760

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ZdpG9cvkU5.bat

      Filesize

      201B

      MD5

      da548d18752ad95ab2975eddb3be5ee6

      SHA1

      55a46a7254ee21d5ba5644660a4903f8a96852bc

      SHA256

      e778f487c9420b840021b8354f05310dbaf0b7eca822f4a267edac361c23fbf8

      SHA512

      435f00dc65fc91baf93d7f97c473d89d5b14dbe456ec91b66edbe9cb6e4b002526a28c160ca1c1e487997da21eb486da6e2b48689829838c3c1cbe3b029cf22e

    • C:\Users\Default\Downloads\lsass.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • C:\Users\Default\Downloads\lsass.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • C:\surrogateContainerhostcrtDll\containersavesCrt.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • C:\surrogateContainerhostcrtDll\containersavesCrt.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • C:\surrogateContainerhostcrtDll\fba6WO2dA9UqWb6NlbxSa.bat

      Filesize

      55B

      MD5

      f1a7c3c3ddb14918973adcec0ca793e5

      SHA1

      cd8dc923af6be2083d0a41f69fb32c9a08b2ea7a

      SHA256

      ed360b14dbbe3a7a03e882f0bd9b892af8357642fcbb296e62bac96112d4a526

      SHA512

      472f2d9d775d7b3a9a17fc8327040438e591ffbaaf87be8353a4e02446bd5ee805ce39fa2c57f1b32ca6f971210fba6532d3b993b7f861a6dd49edb0986dbccf

    • C:\surrogateContainerhostcrtDll\qAjDBhKogos2S0J68ty6.vbe

      Filesize

      226B

      MD5

      6a5882c4cb8293cb361d7f95c51de59e

      SHA1

      48662867659024019cfc01e2e4731f9efaa83c67

      SHA256

      1ce3ab815dfa8ab817dab9bb42c012e940041735fa4f2064f780cd44b7a5c0a2

      SHA512

      e5c5940e4f1358688df06cb84ab1b9ea3a26a336ccbef7b02b0c40cb6477894855c8513f037ec602b4fce7a72f4a54b4f4ccf314437b595521aa4b3d4f21fe9f

    • \Users\Default\Downloads\lsass.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • \Users\Default\Downloads\lsass.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • \surrogateContainerhostcrtDll\containersavesCrt.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • \surrogateContainerhostcrtDll\containersavesCrt.exe

      Filesize

      1.2MB

      MD5

      963f8f811b559d489ac8f0f5128acb7a

      SHA1

      91b273936ab1e1f562d29893f18bfe13a8be6448

      SHA256

      a3add9edc4b19b2b4e1061b0f1e685c2738bed0be41a5b6bfb6f85b66f21d923

      SHA512

      6c969271651bb4480d66c17665155e3a9590f41cc59091f2219b9f54bd86eabd6dee0deb758a12980b98740aa3859e670bf0cffa889702b3e038b1f9131a94c7

    • memory/468-82-0x00000000003D0000-0x000000000078C000-memory.dmp

      Filesize

      3.7MB

    • memory/468-80-0x00000000003D0000-0x000000000078C000-memory.dmp

      Filesize

      3.7MB

    • memory/468-81-0x00000000003D0000-0x000000000078C000-memory.dmp

      Filesize

      3.7MB

    • memory/468-77-0x0000000000000000-mapping.dmp

    • memory/888-59-0x0000000000000000-mapping.dmp

    • memory/944-54-0x0000000075141000-0x0000000075143000-memory.dmp

      Filesize

      8KB

    • memory/1380-55-0x0000000000000000-mapping.dmp

    • memory/1416-68-0x0000000000000000-mapping.dmp

    • memory/1636-70-0x0000000000000000-mapping.dmp

    • memory/1984-71-0x00000000002A0000-0x000000000065C000-memory.dmp

      Filesize

      3.7MB

    • memory/1984-67-0x00000000002A0000-0x000000000065C000-memory.dmp

      Filesize

      3.7MB

    • memory/1984-66-0x00000000002A0000-0x000000000065C000-memory.dmp

      Filesize

      3.7MB

    • memory/1984-63-0x0000000000000000-mapping.dmp

    • memory/2036-73-0x0000000000000000-mapping.dmp