Analysis

  • max time kernel
    129s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2022, 22:55

General

  • Target

    c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe

  • Size

    1.3MB

  • MD5

    3bb7660baf9ada31b6d80328f544807f

  • SHA1

    619b291181c5b325c350db4ed07bbe28434cb9ac

  • SHA256

    c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891

  • SHA512

    b63bcbd711f4c168070b6abbf5da1e447afc880873d7ff6cf45095f995af913b7cd229f0f97e0c448b96c83ae066f066e6a309594e1c89f68b17025120ea1841

  • SSDEEP

    24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

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 9 IoCs

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

  • DCRat payload 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 9 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe
    "C:\Users\Admin\AppData\Local\Temp\c81d899cf0ca50b5f8ffa37e964e2bca5b530fd7bf526af295725352150fb891.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4376
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4244
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providercommon\1zu9dW.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3648
        • C:\providercommon\DllCommonsvc.exe
          "C:\providercommon\DllCommonsvc.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2488
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2828
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\RuntimeBroker.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4708
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\cmd.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4408
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\RuntimeBroker.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1060
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Xt53IWezav.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4592
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:2876
              • C:\providercommon\RuntimeBroker.exe
                "C:\providercommon\RuntimeBroker.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                PID:1368
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\providercommon\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4780
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\providercommon\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3908
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\providercommon\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3748
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2164
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4308
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3728
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 13 /tr "'C:\providercommon\cmd.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1304
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\providercommon\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 6 /tr "'C:\providercommon\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1636

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

            Filesize

            2KB

            MD5

            d85ba6ff808d9e5444a4b369f5bc2730

            SHA1

            31aa9d96590fff6981b315e0b391b575e4c0804a

            SHA256

            84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

            SHA512

            8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            944B

            MD5

            77d622bb1a5b250869a3238b9bc1402b

            SHA1

            d47f4003c2554b9dfc4c16f22460b331886b191b

            SHA256

            f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

            SHA512

            d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            944B

            MD5

            77d622bb1a5b250869a3238b9bc1402b

            SHA1

            d47f4003c2554b9dfc4c16f22460b331886b191b

            SHA256

            f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

            SHA512

            d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

            Filesize

            944B

            MD5

            d28a889fd956d5cb3accfbaf1143eb6f

            SHA1

            157ba54b365341f8ff06707d996b3635da8446f7

            SHA256

            21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

            SHA512

            0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

          • C:\Users\Admin\AppData\Local\Temp\Xt53IWezav.bat

            Filesize

            200B

            MD5

            e743aec95ed87abd917d81c6ecbc60e0

            SHA1

            fda8b0c3bafbd2cf9e4ceeccf41524bc089552c3

            SHA256

            c8799c37c416e39d0a24bd7c108c40927842e5c915840f8c8a4b8bd02d109281

            SHA512

            ab358a330176b5e79330d7689746a0197e0681a4034b51c489ec17e712c7e8ce35b52ed84bc30a4ca09c323b1e42f296b3873eebc80adab1ebbf3dc3d0caad63

          • C:\providercommon\1zu9dW.bat

            Filesize

            36B

            MD5

            6783c3ee07c7d151ceac57f1f9c8bed7

            SHA1

            17468f98f95bf504cc1f83c49e49a78526b3ea03

            SHA256

            8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

            SHA512

            c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

          • C:\providercommon\DllCommonsvc.exe

            Filesize

            1.0MB

            MD5

            bd31e94b4143c4ce49c17d3af46bcad0

            SHA1

            f8c51ff3ff909531d9469d4ba1bbabae101853ff

            SHA256

            b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

            SHA512

            f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

          • C:\providercommon\DllCommonsvc.exe

            Filesize

            1.0MB

            MD5

            bd31e94b4143c4ce49c17d3af46bcad0

            SHA1

            f8c51ff3ff909531d9469d4ba1bbabae101853ff

            SHA256

            b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

            SHA512

            f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

          • C:\providercommon\RuntimeBroker.exe

            Filesize

            1.0MB

            MD5

            bd31e94b4143c4ce49c17d3af46bcad0

            SHA1

            f8c51ff3ff909531d9469d4ba1bbabae101853ff

            SHA256

            b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

            SHA512

            f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

          • C:\providercommon\RuntimeBroker.exe

            Filesize

            1.0MB

            MD5

            bd31e94b4143c4ce49c17d3af46bcad0

            SHA1

            f8c51ff3ff909531d9469d4ba1bbabae101853ff

            SHA256

            b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

            SHA512

            f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

          • C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

            Filesize

            197B

            MD5

            8088241160261560a02c84025d107592

            SHA1

            083121f7027557570994c9fc211df61730455bb5

            SHA256

            2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

            SHA512

            20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

          • memory/1060-151-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/1060-158-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/1368-165-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/1368-166-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/2488-140-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/2488-147-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/2488-139-0x00000000000B0000-0x00000000001C0000-memory.dmp

            Filesize

            1.1MB

          • memory/2828-159-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/2828-150-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/4408-157-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/4408-152-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/4408-146-0x000002BE635A0000-0x000002BE635C2000-memory.dmp

            Filesize

            136KB

          • memory/4708-161-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB

          • memory/4708-153-0x00007FF9484B0000-0x00007FF948F71000-memory.dmp

            Filesize

            10.8MB