Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2023, 05:06

General

  • Target

    397f5c91fd7cafc22c3fe28bc8fe675a.exe

  • Size

    1.3MB

  • MD5

    397f5c91fd7cafc22c3fe28bc8fe675a

  • SHA1

    02e127ae9c5a55e9b48731a3d47220cdb056f3eb

  • SHA256

    b134e4e5d74eb1a5ddd66625837b44ed6d23fbac004bbaae91ece785b7c574e3

  • SHA512

    fdb348e8d451e68f59c02c57dcc788e486f7244211687b854463768961c50bd70fad6e5e0e2e66dd3c42666fa6d04fcf1014e3dd356011eeaba4a6a7031bf311

  • SSDEEP

    24576:dA1MqYjjU6kS6e5jB/n4L6JXWutEcPO6KhepiKnG/hnPrdSkl+j9aTw1OquD:d4dK756e5VgL6JXWutEcLmesKG/hQzj4

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 39 IoCs

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

  • DCRat payload 9 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 3 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 39 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\397f5c91fd7cafc22c3fe28bc8fe675a.exe
    "C:\Users\Admin\AppData\Local\Temp\397f5c91fd7cafc22c3fe28bc8fe675a.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1536
    • C:\Users\Admin\AppData\Local\Temp\prikol.exe
      "C:\Users\Admin\AppData\Local\Temp\prikol.exe"
      2⤵
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\comhostDhcpcommon\2tGgrQ6HpW.vbe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3052
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\comhostDhcpcommon\V15q6MjWRY5zvqjkxpp.bat" "
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3152
          • C:\comhostDhcpcommon\agentServer.exe
            "C:\comhostDhcpcommon\agentServer.exe"
            5⤵
            • 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:3136
            • C:\Windows\en-US\RuntimeBroker.exe
              "C:\Windows\en-US\RuntimeBroker.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              PID:4480
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\odt\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2888
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4268
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Documents\My Pictures\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Default\Documents\My Pictures\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3048
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Users\Default\Documents\My Pictures\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1332
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1264
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3840
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2792
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Common Files\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5096
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Common Files\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\en-US\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4000
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\en-US\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3984
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Windows\en-US\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2816
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3404
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 8 /tr "'C:\Program Files\MSBuild\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3952
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\MSBuild\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2748
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 7 /tr "'C:\Program Files\MSBuild\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\odt\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\odt\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2304
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\odt\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4380
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1364
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\comhostDhcpcommon\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3412
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\comhostDhcpcommon\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\comhostDhcpcommon\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4444
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 9 /tr "'C:\Users\Default User\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2452
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Users\Default User\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3848
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 8 /tr "'C:\odt\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\odt\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3568
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\odt\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4592
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4224

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\prikol.exe

          Filesize

          1.1MB

          MD5

          1df91d3d9db8d531d84c3090af0c5399

          SHA1

          d5289bf48dc32630219ca3fb50b9509e40a61d82

          SHA256

          a6e63a37391179fcb2b624a4e3a12a2d59fcd2479b79d8e0d117facd0b6b4948

          SHA512

          85762e86d9aeb7d8360af01405e90fd5a06c1b5f53c5c913b1a2d025361bed7e3bb8cfca05e23c3ae87fe9fec8073e4687d5700d88b29adaa027186186288979

        • C:\Users\Admin\AppData\Local\Temp\prikol.exe

          Filesize

          1.1MB

          MD5

          1df91d3d9db8d531d84c3090af0c5399

          SHA1

          d5289bf48dc32630219ca3fb50b9509e40a61d82

          SHA256

          a6e63a37391179fcb2b624a4e3a12a2d59fcd2479b79d8e0d117facd0b6b4948

          SHA512

          85762e86d9aeb7d8360af01405e90fd5a06c1b5f53c5c913b1a2d025361bed7e3bb8cfca05e23c3ae87fe9fec8073e4687d5700d88b29adaa027186186288979

        • C:\Users\Admin\AppData\Local\Temp\prikol.exe

          Filesize

          1.1MB

          MD5

          1df91d3d9db8d531d84c3090af0c5399

          SHA1

          d5289bf48dc32630219ca3fb50b9509e40a61d82

          SHA256

          a6e63a37391179fcb2b624a4e3a12a2d59fcd2479b79d8e0d117facd0b6b4948

          SHA512

          85762e86d9aeb7d8360af01405e90fd5a06c1b5f53c5c913b1a2d025361bed7e3bb8cfca05e23c3ae87fe9fec8073e4687d5700d88b29adaa027186186288979

        • C:\Users\Default\Pictures\dwm.exe

          Filesize

          829KB

          MD5

          9bc17f902aa42e14e3942b2895bbcd50

          SHA1

          a9ae75b0ec339a7fbbde2dc67fbf3639fdf046c2

          SHA256

          6133eab082730a37822829c47341c6f0d4dfd8fcec990e9d1a29067dcb32421b

          SHA512

          a9b0918cb2add3fd507b38d929b1dff8f433020fa885f2b76c79d8bd8e471d4baa6df7f8d1f3a09397d7d10c03b2f49c4870646d6225d0e22de0806ae5a9de46

        • C:\Windows\en-US\RuntimeBroker.exe

          Filesize

          829KB

          MD5

          9bc17f902aa42e14e3942b2895bbcd50

          SHA1

          a9ae75b0ec339a7fbbde2dc67fbf3639fdf046c2

          SHA256

          6133eab082730a37822829c47341c6f0d4dfd8fcec990e9d1a29067dcb32421b

          SHA512

          a9b0918cb2add3fd507b38d929b1dff8f433020fa885f2b76c79d8bd8e471d4baa6df7f8d1f3a09397d7d10c03b2f49c4870646d6225d0e22de0806ae5a9de46

        • C:\Windows\en-US\RuntimeBroker.exe

          Filesize

          829KB

          MD5

          9bc17f902aa42e14e3942b2895bbcd50

          SHA1

          a9ae75b0ec339a7fbbde2dc67fbf3639fdf046c2

          SHA256

          6133eab082730a37822829c47341c6f0d4dfd8fcec990e9d1a29067dcb32421b

          SHA512

          a9b0918cb2add3fd507b38d929b1dff8f433020fa885f2b76c79d8bd8e471d4baa6df7f8d1f3a09397d7d10c03b2f49c4870646d6225d0e22de0806ae5a9de46

        • C:\comhostDhcpcommon\2tGgrQ6HpW.vbe

          Filesize

          213B

          MD5

          c0dbb672804e81ed5bdc6ae50ec4b16a

          SHA1

          df8bfc820f8de52ce8293395446991e5e5c43125

          SHA256

          3a91849c1602a6fd0556663ea487f01d64fe4828f619ed5eb3f13c67c20dd905

          SHA512

          6546e2c5c95f5bab69f7664cd4a0850a55554a1394a3dfe8252d048227df6ca8f0aec034f5954dbfc8eaf2137e642970364f71c1a5be5d5a68b6e5c32858f9e7

        • C:\comhostDhcpcommon\V15q6MjWRY5zvqjkxpp.bat

          Filesize

          38B

          MD5

          9daeb83018f1b30f4911748df09b9fa5

          SHA1

          6162370200b2c9e65620291d6ff114236492824e

          SHA256

          c85b773f45f51d07874769ea344f153f63709b38f04cfc4180a7791392dcd5bb

          SHA512

          1ec027262ba1aca607e00d00afb4cff5f471f39fb76760a1ac7af1437bd23814f0cb1ef8cad2211db104772ba02501812ba8e96f41ee3e0da56a7aac3ef5bced

        • C:\comhostDhcpcommon\agentServer.exe

          Filesize

          829KB

          MD5

          9bc17f902aa42e14e3942b2895bbcd50

          SHA1

          a9ae75b0ec339a7fbbde2dc67fbf3639fdf046c2

          SHA256

          6133eab082730a37822829c47341c6f0d4dfd8fcec990e9d1a29067dcb32421b

          SHA512

          a9b0918cb2add3fd507b38d929b1dff8f433020fa885f2b76c79d8bd8e471d4baa6df7f8d1f3a09397d7d10c03b2f49c4870646d6225d0e22de0806ae5a9de46

        • C:\comhostDhcpcommon\agentServer.exe

          Filesize

          829KB

          MD5

          9bc17f902aa42e14e3942b2895bbcd50

          SHA1

          a9ae75b0ec339a7fbbde2dc67fbf3639fdf046c2

          SHA256

          6133eab082730a37822829c47341c6f0d4dfd8fcec990e9d1a29067dcb32421b

          SHA512

          a9b0918cb2add3fd507b38d929b1dff8f433020fa885f2b76c79d8bd8e471d4baa6df7f8d1f3a09397d7d10c03b2f49c4870646d6225d0e22de0806ae5a9de46

        • memory/3136-157-0x00007FFE41F10000-0x00007FFE429D1000-memory.dmp

          Filesize

          10.8MB

        • memory/3136-158-0x00000000021A0000-0x00000000021B0000-memory.dmp

          Filesize

          64KB

        • memory/3136-156-0x0000000000060000-0x0000000000136000-memory.dmp

          Filesize

          856KB

        • memory/3136-196-0x00007FFE41F10000-0x00007FFE429D1000-memory.dmp

          Filesize

          10.8MB

        • memory/4480-197-0x00007FFE41F10000-0x00007FFE429D1000-memory.dmp

          Filesize

          10.8MB

        • memory/4480-198-0x00007FFE41F10000-0x00007FFE429D1000-memory.dmp

          Filesize

          10.8MB