Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/07/2023, 01:19

General

  • Target

    7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842.exe

  • Size

    2.3MB

  • MD5

    333413d3a10dbf3bf121d1ab4b866346

  • SHA1

    e4ab9d6bbc56e1c48c2a444cf885833af963fd09

  • SHA256

    7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842

  • SHA512

    59f4248caeab1f870b0614930ba3894e30716c938df35894f25372257d608135b3c93d233edcb3fd6b8f3e391925612880d5c4e5b65336d3be5aa0d026381c20

  • SSDEEP

    49152:INaBz16Zarg7zdXaCVCPr5szFTBwWGZfr9KWz/:Ia8YQsfPrUlyWGF4Wz/

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 27 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 27 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 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\7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842.exe
    "C:\Users\Admin\AppData\Local\Temp\7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2920
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\D4AhPIy1ax.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1816
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:844
        • C:\odt\unsecapp.exe
          "C:\odt\unsecapp.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1668
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 6 /tr "'C:\odt\SearchApp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2284
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\odt\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2704
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 9 /tr "'C:\odt\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2484
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\3.4.0\Functions\lsass.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2684
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\3.4.0\Functions\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1832
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Program Files\WindowsPowerShell\Modules\Pester\3.4.0\Functions\lsass.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3684
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Windows\Offline Web Pages\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3652
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Offline Web Pages\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4920
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Windows\Offline Web Pages\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4528
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Windows\Cursors\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\SearchApp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Users\Admin\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2900
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\SearchApp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\odt\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4304
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\odt\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 10 /tr "'C:\odt\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3740
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 10 /tr "'C:\odt\unsecapp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4532
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\odt\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4580
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 5 /tr "'C:\odt\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4212
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SppExtComObj.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1128
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2412
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SppExtComObj.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4948
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3556
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2464

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\D4AhPIy1ax.bat

            Filesize

            184B

            MD5

            35875f6af01cc4ee42ce3dfd6a42f416

            SHA1

            b9af1788c1ebc2cc21b4ca3eb46f611966e5474c

            SHA256

            176a5769c17e3f7e6508c49fd2639616422eeef71f2ad6d2d31a9fade25c8a93

            SHA512

            9e62802a0f44f11c43192f529e61f76999a7bdaf9dc7096e420edaa33a4673f48e394f2f4eba6469f15ee86c732d5c00b2b9e7fa5f1c0db5b89258f6f5bc21e8

          • C:\Users\Admin\SearchApp.exe

            Filesize

            2.3MB

            MD5

            333413d3a10dbf3bf121d1ab4b866346

            SHA1

            e4ab9d6bbc56e1c48c2a444cf885833af963fd09

            SHA256

            7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842

            SHA512

            59f4248caeab1f870b0614930ba3894e30716c938df35894f25372257d608135b3c93d233edcb3fd6b8f3e391925612880d5c4e5b65336d3be5aa0d026381c20

          • C:\odt\unsecapp.exe

            Filesize

            2.3MB

            MD5

            333413d3a10dbf3bf121d1ab4b866346

            SHA1

            e4ab9d6bbc56e1c48c2a444cf885833af963fd09

            SHA256

            7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842

            SHA512

            59f4248caeab1f870b0614930ba3894e30716c938df35894f25372257d608135b3c93d233edcb3fd6b8f3e391925612880d5c4e5b65336d3be5aa0d026381c20

          • C:\odt\unsecapp.exe

            Filesize

            2.3MB

            MD5

            333413d3a10dbf3bf121d1ab4b866346

            SHA1

            e4ab9d6bbc56e1c48c2a444cf885833af963fd09

            SHA256

            7ca900970ade7ffa3ce2cfb9e45f90575e361053749dc0cc3406bd2bebaff842

            SHA512

            59f4248caeab1f870b0614930ba3894e30716c938df35894f25372257d608135b3c93d233edcb3fd6b8f3e391925612880d5c4e5b65336d3be5aa0d026381c20

          • memory/1668-172-0x000000001B390000-0x000000001B3A0000-memory.dmp

            Filesize

            64KB

          • memory/1668-171-0x00007FF9EDBD0000-0x00007FF9EE691000-memory.dmp

            Filesize

            10.8MB

          • memory/1668-170-0x000000001B390000-0x000000001B3A0000-memory.dmp

            Filesize

            64KB

          • memory/1668-169-0x00007FF9EDBD0000-0x00007FF9EE691000-memory.dmp

            Filesize

            10.8MB

          • memory/2920-139-0x000000001BC30000-0x000000001BC80000-memory.dmp

            Filesize

            320KB

          • memory/2920-164-0x00007FF9ED950000-0x00007FF9EE411000-memory.dmp

            Filesize

            10.8MB

          • memory/2920-140-0x000000001C1B0000-0x000000001C6D8000-memory.dmp

            Filesize

            5.2MB

          • memory/2920-136-0x00000000006E0000-0x0000000000932000-memory.dmp

            Filesize

            2.3MB

          • memory/2920-138-0x000000001B560000-0x000000001B570000-memory.dmp

            Filesize

            64KB

          • memory/2920-137-0x00007FF9ED950000-0x00007FF9EE411000-memory.dmp

            Filesize

            10.8MB