Analysis

  • max time kernel
    125s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-05-2024 13:41

General

  • Target

    ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe

  • Size

    1.1MB

  • MD5

    2768c63cfbffae59b6c2c5483e804d14

  • SHA1

    a577f6aa123f1b641a780ef4cf205b73c2b2bfc3

  • SHA256

    ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4

  • SHA512

    7ae59899ac9d77e98f5f52e2eeee350bade1aab284fc65bb64ba1ff605a8c7148ae535b8b69bb0fedfde6449becd87b5a0678ce241414d54b7b759c36dd0da04

  • SSDEEP

    24576:U2G/nvxW3Ww0tkAyVPwER/v6Yq9/zI2SV6/6ODpvdcKRWksjQ:UbA30kAyRwE332SV6XDzRLs0

Score
10/10

Malware Config

Signatures

  • DcRat 35 IoCs

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

  • Process spawned unexpected child process 33 IoCs

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

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 33 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 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\ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe
    "C:\Users\Admin\AppData\Local\Temp\ff50267ebed21e418f8469347853e57ddf373c68db52b8ce2019377a731bd0a4.exe"
    1⤵
    • DcRat
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2524
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\portMonitor\7qmHZrFz6PlKEeySf7g6q7bPLdDi.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\portMonitor\1iRUSp.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:800
        • C:\portMonitor\MsRuntimeperf.exe
          "C:\portMonitor\MsRuntimeperf.exe"
          4⤵
          • DcRat
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:336
          • C:\portMonitor\MsRuntimeperf.exe
            "C:\portMonitor\MsRuntimeperf.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4996
            • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\msedge.exe
              "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\msedge.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:324
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3804,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4624 /prefetch:8
    1⤵
      PID:2212
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Recent\smss.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3480
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\Default\Recent\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Recent\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2240
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Portable Devices\fontdrvhost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:536
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Portable Devices\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:224
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\portMonitor\fontdrvhost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4560
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\portMonitor\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 9 /tr "'C:\portMonitor\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Portable Devices\sihost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1856
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\sihost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Portable Devices\sihost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:460
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 13 /tr "'C:\Program Files\Common Files\System\en-US\sysmon.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3360
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files\Common Files\System\en-US\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2220
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 6 /tr "'C:\Program Files\Common Files\System\en-US\sysmon.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2344
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\portMonitor\smss.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3192
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\portMonitor\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1636
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\portMonitor\smss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1096
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 10 /tr "'C:\Users\Admin\Saved Games\lsass.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4388
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Users\Admin\Saved Games\lsass.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4464
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Saved Games\lsass.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:5024
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Google\CrashReports\unsecapp.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1508
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Program Files (x86)\Google\CrashReports\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:5088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Google\CrashReports\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2532
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\msedge.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4108
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\msedge.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1472
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\msedge.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:832
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Music\RuntimeBroker.exe'" /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Admin\Music\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2040
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\Music\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:672

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      1KB

      MD5

      7f3c0ae41f0d9ae10a8985a2c327b8fb

      SHA1

      d58622bf6b5071beacf3b35bb505bde2000983e3

      SHA256

      519fceae4d0dd4d09edd1b81bcdfa8aeab4b59eee77a4cd4b6295ce8e591a900

      SHA512

      8a8fd17eef071f86e672cba0d8fc2cfed6118aff816100b9d7c06eb96443c04c04bc5692259c8d7ecb1563e877921939c61726605af4f969e3f586f0913ed125

    • C:\portMonitor\1iRUSp.bat

      Filesize

      34B

      MD5

      e7d861bf32c0cfdce43a988f7624094b

      SHA1

      ce94364c1662056c36487d1ad2a3910d60295567

      SHA256

      bf1a6596c9cb4f855e364b1b2f4e065d3c3db14814e4cb933a45dc1929604bab

      SHA512

      f4e9116284beb83c4b459f386fb1cb2573769c937082a3dd1efb5ebf73693e9ad03be4cb691476720d8a7841b29aea1bd8f57e7070e15baf293c0683dc553f04

    • C:\portMonitor\7qmHZrFz6PlKEeySf7g6q7bPLdDi.vbe

      Filesize

      194B

      MD5

      549bfbdf4b94348d8d90e99da8c2251e

      SHA1

      5a137b4eca702e1154f27729b4bd4de2e66e7562

      SHA256

      3d992a2df8f78acb01aacd43662b8ef67810149dd6c40b96f5d88ce9ba8e215e

      SHA512

      c3a5f93b0dde2d1a00133e22014d7b3b8d59c2780b426429d9fa98d3e32e66d6697de50af714b3375d82034f77feba7b90336b8d44767a2eaacd77129dc13793

    • C:\portMonitor\MsRuntimeperf.exe

      Filesize

      828KB

      MD5

      4168f956abf60ffe49acc17b2544866f

      SHA1

      92c00da15b67c3fbc23a74198b1220c55dc56fec

      SHA256

      19ad2d50f71214129742f9e3901ee595f760b36d5cac676911c3ee0ec7c6546d

      SHA512

      938a4e85094d517e0ca9ef96edd2dfef75accd5d7546da44a921be023dcd066fcab51688b1f7036f67f7dcd3d0e7aedafccc58abee2b22c15da1bb05ec002a0e

    • memory/336-12-0x00007FF8023A0000-0x00007FF802669000-memory.dmp

      Filesize

      2.8MB

    • memory/336-13-0x0000000000930000-0x0000000000A06000-memory.dmp

      Filesize

      856KB

    • memory/336-20-0x00007FF8023A0000-0x00007FF802669000-memory.dmp

      Filesize

      2.8MB