Analysis

  • max time kernel
    129s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    07/12/2023, 05:55

General

  • Target

    44e2a2a697477c436112954794761cc0.exe

  • Size

    1.1MB

  • MD5

    44e2a2a697477c436112954794761cc0

  • SHA1

    87195428fd9e65ea14889e4853dc44f391088963

  • SHA256

    90f403c6304240465460ace49b8db9d46c7d28bc36fd49b89f4722ee497bd2dd

  • SHA512

    c2040c04ec3d743941c2ba059f572f07d5df2a043c5302b3cf6e13d74610025457be22c3b8d9a1943873b99ac72e5972830a5c17becc52fdc19582e0d58911c4

  • SSDEEP

    24576:U2G/nvxW3Ww0titP01wNiMXBlVJX3NSdGKJg6U8HC:UbA30KP0XMXHX38dPDi

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 21 IoCs

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

  • DCRat payload 10 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 21 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\44e2a2a697477c436112954794761cc0.exe
    "C:\Users\Admin\AppData\Local\Temp\44e2a2a697477c436112954794761cc0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\bridgewin\j1qIwrxR5PWhzH3rYbChGhv1rfV.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\bridgewin\aVtauS9Ns.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\bridgewin\intoperf.exe
          "C:\bridgewin\intoperf.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2536
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\HafTyyQZTn.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2268
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:2956
              • C:\Program Files\Windows Journal\dwm.exe
                "C:\Program Files\Windows Journal\dwm.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                PID:1116
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 10 /tr "'C:\Windows\Branding\Basebrd\en-US\lsm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2448
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsm" /sc ONLOGON /tr "'C:\Windows\Branding\Basebrd\en-US\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3056
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsml" /sc MINUTE /mo 8 /tr "'C:\Windows\Branding\Basebrd\en-US\lsm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2476
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\Windows\Web\Wallpaper\Characters\conhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\Web\Wallpaper\Characters\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2444
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\Windows\Web\Wallpaper\Characters\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2472
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Portable Devices\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1216
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files\Windows Portable Devices\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Portable Devices\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2244
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\bridgewin\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1752
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\bridgewin\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2632
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\bridgewin\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:948
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 14 /tr "'C:\Recovery\cb3b2b82-8fa0-11ee-b553-66adf901a452\conhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1304
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\cb3b2b82-8fa0-11ee-b553-66adf901a452\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2424
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\Recovery\cb3b2b82-8fa0-11ee-b553-66adf901a452\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1956
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2620
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows Journal\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Journal\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1684

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Windows Journal\dwm.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • C:\Program Files\Windows Journal\dwm.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • C:\Program Files\Windows Portable Devices\System.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

            Filesize

            65KB

            MD5

            ac05d27423a85adc1622c714f2cb6184

            SHA1

            b0fe2b1abddb97837ea0195be70ab2ff14d43198

            SHA256

            c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

            SHA512

            6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

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

            Filesize

            205B

            MD5

            8ead1ad0a44a4f49e8aab28ed03b0605

            SHA1

            89f4c090c0190dfb0aeff59c84453db3cd8c2b7b

            SHA256

            ba03543f616da58ade674bc74194d9ab2ccd7da6bf6a737c6e0d5e28f68df10b

            SHA512

            5c397be976c99b8842c49ba516bf0e9abf3c7af947cbf90944242d69a7c45e18d22360a6d8d201b402496bf3676e368f5cc7bee3f34f646a4757615d213b022e

          • C:\Users\Admin\AppData\Local\Temp\Tar565F.tmp

            Filesize

            171KB

            MD5

            9c0c641c06238516f27941aa1166d427

            SHA1

            64cd549fb8cf014fcd9312aa7a5b023847b6c977

            SHA256

            4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

            SHA512

            936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

          • C:\bridgewin\aVtauS9Ns.bat

            Filesize

            27B

            MD5

            9563bdb4457bb726008ec17163dcefe6

            SHA1

            7c2927cc8ae633484e96cf0926eabadcffe44554

            SHA256

            f7016b9d9c3f1d7b89e0a4c06b1183e0d7207be92bad7e7cc960e976758fac4c

            SHA512

            5e5cb09ac2017366cbc024e452983ea783b763b837e00c67e450a86a7b83fbc5bf97da87b19d41f0393e8faf5d97491529d55a52e4556868a249d299bc002591

          • C:\bridgewin\intoperf.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • C:\bridgewin\intoperf.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • C:\bridgewin\j1qIwrxR5PWhzH3rYbChGhv1rfV.vbe

            Filesize

            195B

            MD5

            bcb81ae961fe26cc730d5429caee2a15

            SHA1

            5eee2200e5a5d79aa54e9de51a5e7332d26b32fc

            SHA256

            d8fe32ec91d7d9e865ce5f3a3382d6093ea78fbeb4dfe521021ad918f6f64bc3

            SHA512

            aaea8d450d6ca80ff0b6d82b8585a9e808863891fbc2de9387ad0220263d98898c89bebca90d331bef7eb900718c8625d4a259c0034b05246524e6d83fe5599d

          • \bridgewin\intoperf.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • \bridgewin\intoperf.exe

            Filesize

            827KB

            MD5

            cb173771fd6331c5d9db3bef77acb57a

            SHA1

            f3680aab95eb9f37b38cc616bc6b01db3cc953c2

            SHA256

            251f52babec252887919e29c83180c6075a08e395f7fc2f44222e0dd320478b8

            SHA512

            826730b301286e2d1c1137716c393a2fee686cc3146852e3903e9b3ca7026dce9dbb839537028d8deb16903d60b4604830b51992058f649cc2259cacf3f55bb7

          • memory/1116-39-0x000007FEF4E50000-0x000007FEF583C000-memory.dmp

            Filesize

            9.9MB

          • memory/1116-38-0x0000000000F50000-0x0000000001026000-memory.dmp

            Filesize

            856KB

          • memory/1116-40-0x0000000000BA0000-0x0000000000C20000-memory.dmp

            Filesize

            512KB

          • memory/1116-77-0x000007FEF4E50000-0x000007FEF583C000-memory.dmp

            Filesize

            9.9MB

          • memory/1116-78-0x0000000000BA0000-0x0000000000C20000-memory.dmp

            Filesize

            512KB

          • memory/2536-34-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

            Filesize

            9.9MB

          • memory/2536-15-0x000000001B0E0000-0x000000001B160000-memory.dmp

            Filesize

            512KB

          • memory/2536-14-0x000007FEF5840000-0x000007FEF622C000-memory.dmp

            Filesize

            9.9MB

          • memory/2536-13-0x0000000000FD0000-0x00000000010A6000-memory.dmp

            Filesize

            856KB