Analysis

  • max time kernel
    117s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    14-01-2025 02:07

General

  • Target

    1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe

  • Size

    829KB

  • MD5

    c1f1bea182f1c3477c2f133c3ac26930

  • SHA1

    2145c09d2c3279ac83e844c4d80e7aa219e99b8d

  • SHA256

    1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5

  • SHA512

    6af6336782b29bdab906e4d289cb5c2c8500ba8a20dee53def21960e62afc28ec6756b746b4e4036a30726984a60b656b3d529b4abc119953267e91be4992a4d

  • SSDEEP

    12288:P6TnOzi5kaag8hpT77JJMA+XSpW3Ari4VVyZC0+1cw2jINof7+vEnkdsOZ6:P6TnYa+T7dJMA+i3iE0nHfW6

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Modifies WinLogon for persistence 2 TTPs 6 IoCs
  • Process spawned unexpected child process 18 IoCs

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

  • DCRat payload 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 12 IoCs
  • 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 System32 directory 2 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 36 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\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe
    "C:\Users\Admin\AppData\Local\Temp\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\qr0hv0n3\qr0hv0n3.cmdline"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESAE68.tmp" "c:\Windows\System32\CSC38E22CDC94EE462BB617F53E78EA24B1.TMP"
        3⤵
          PID:2624
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2124
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Uninstall Information\WmiPrvSE.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:316
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2072
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\All Users\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2092
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Journal\OSPPSVC.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:1292
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2412
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\BqTVbcFHTW.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2320
        • C:\Windows\system32\chcp.com
          chcp 65001
          3⤵
            PID:2068
          • C:\Windows\system32\w32tm.exe
            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
            3⤵
              PID:2328
            • C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe
              "C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe"
              3⤵
              • Executes dropped EXE
              • Modifies system certificate store
              • Suspicious use of AdjustPrivilegeToken
              PID:888
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 14 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2764
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2908
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 12 /tr "'C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2824
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Uninstall Information\WmiPrvSE.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3068
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\WmiPrvSE.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2496
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Uninstall Information\WmiPrvSE.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2000
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 10 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1400
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2872
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0116-0409-1000-0000000FF1CE}-C\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:960
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1100
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5" /sc ONLOGON /tr "'C:\Users\All Users\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:592
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1980
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Journal\OSPPSVC.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2536
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2392
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "OSPPSVCO" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Journal\OSPPSVC.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:1032
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\AppData\Local\Temp\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2808
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2968
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb51" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\AppData\Local\Temp\1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2064

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Recovery\1a287102-69f6-11ef-b2ff-62cb582c238c\OSPPSVC.exe

          Filesize

          829KB

          MD5

          c1f1bea182f1c3477c2f133c3ac26930

          SHA1

          2145c09d2c3279ac83e844c4d80e7aa219e99b8d

          SHA256

          1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5

          SHA512

          6af6336782b29bdab906e4d289cb5c2c8500ba8a20dee53def21960e62afc28ec6756b746b4e4036a30726984a60b656b3d529b4abc119953267e91be4992a4d

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

          Filesize

          236B

          MD5

          a3c92f7636c3f913b5f94da1186eb3a3

          SHA1

          74bf974a6a28521fde64b33933b28032cefd7682

          SHA256

          67c99b214a74051eaf61072942827d2101b001040445711f998eae39c3794793

          SHA512

          10dd8577be3a111b49619eb25a2118ad2a4f0020cb58a66f7273f43806ca3dc1c75358396c9fce5253350d8159c8a0e6e9ccd9df121d9e367d1d7b9f354e4933

        • C:\Users\Admin\AppData\Local\Temp\RESAE68.tmp

          Filesize

          1KB

          MD5

          7f3386c57df65631ebde9e814195045c

          SHA1

          a59edb714368c0aab89601efe5f05b549577efd0

          SHA256

          ed5be140642adf6c85373f67560d7599f6261abbc6317530e7ca944aa9e0a698

          SHA512

          0e15b8d5c4ed21e5018a55417d2082ab69a396ef19baeb503173506f6d9fc7172ac3466412dc8a20f8ec9e71ab184ad883921a0fbde89286b71996e5d3b240cc

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

          Filesize

          7KB

          MD5

          f0efd6084baa407a86f542d10d5f8d79

          SHA1

          cc5ac0549f8e8c1cd7b1895146829a52b9b93b62

          SHA256

          ae7be6ef8cff5dd15d49597a2c224ed5430052dca2b75aa048d6614fc5da45bf

          SHA512

          41f0ace6228a13cd1f9f6833fb61e15a8c191d5d13a554ec40a7714964d6cc291cbf84ba9332805644ada4a8fed189e93dd2e49bb9c88eb95dc245577eacc588

        • \??\c:\Users\Admin\AppData\Local\Temp\qr0hv0n3\qr0hv0n3.0.cs

          Filesize

          392B

          MD5

          a8ce9bbb08fe64f2bd342701cf764808

          SHA1

          148de6507e1435b6d4735285859ccd395d15fc47

          SHA256

          c713c08a0b96323f8163ac700b7dec697fb84f7ae1cfa45550ed41fb8840a4fd

          SHA512

          972eabf86eaa2c8218f77e8f87a657d016f4dd52a864f14d3f0f29fad4b722d66cf2fbdeeec1605b43603428ab1ac29c65da13e24c8b94e20b4426bbd32ae2f1

        • \??\c:\Users\Admin\AppData\Local\Temp\qr0hv0n3\qr0hv0n3.cmdline

          Filesize

          235B

          MD5

          2f872bcd2398d08079afc52c8cde45fe

          SHA1

          5983cf58ec20bb750154ce2a26bca8926552433f

          SHA256

          f62ebb8ff4346ec75ba411d3cb1f2f9565f24b9635716bb5382229cea8e5ba2c

          SHA512

          ec981acc3b968d6373c1195475077f156891076d73f99e378b15086c1931490f1ceb08189528eacf84be1676f59cc706054c490a568036ff2484757ca6bf41be

        • \??\c:\Windows\System32\CSC38E22CDC94EE462BB617F53E78EA24B1.TMP

          Filesize

          1KB

          MD5

          8c85ef91c6071d33745325a8fa351c3e

          SHA1

          e3311ceef28823eec99699cc35be27c94eca52d2

          SHA256

          8db3e3a5515da1933036688a9b1918cfc3339fc687008c5325461271904b2d41

          SHA512

          2bb89b07fe46b1c406ed6a560e88cb2b8402b1d61bb71e10887bad661751f64f1e5317fd6c1b301ea4766785b915da31b64e0475cfe36c1f950b32915b5dab7d

        • memory/888-83-0x0000000000350000-0x0000000000426000-memory.dmp

          Filesize

          856KB

        • memory/1756-9-0x0000000000440000-0x0000000000458000-memory.dmp

          Filesize

          96KB

        • memory/1756-0-0x000007FEF5193000-0x000007FEF5194000-memory.dmp

          Filesize

          4KB

        • memory/1756-16-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-13-0x00000000005E0000-0x00000000005E8000-memory.dmp

          Filesize

          32KB

        • memory/1756-28-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-29-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-30-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-31-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-11-0x0000000000410000-0x000000000041E000-memory.dmp

          Filesize

          56KB

        • memory/1756-15-0x00000000005F0000-0x00000000005FC000-memory.dmp

          Filesize

          48KB

        • memory/1756-7-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-6-0x0000000000420000-0x000000000043C000-memory.dmp

          Filesize

          112KB

        • memory/1756-4-0x00000000003D0000-0x00000000003DE000-memory.dmp

          Filesize

          56KB

        • memory/1756-63-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/1756-1-0x0000000000E10000-0x0000000000EE6000-memory.dmp

          Filesize

          856KB

        • memory/1756-2-0x000007FEF5190000-0x000007FEF5B7C000-memory.dmp

          Filesize

          9.9MB

        • memory/2124-64-0x00000000022B0000-0x00000000022B8000-memory.dmp

          Filesize

          32KB

        • memory/2124-62-0x000000001B600000-0x000000001B8E2000-memory.dmp

          Filesize

          2.9MB