Analysis

  • max time kernel
    9s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-11-2022 10:11

General

  • Target

    7e1fb350c38b9cf7c0a61681792c83555d17523e11e15546ec9b6d66ce18724d.exe

  • Size

    1.3MB

  • MD5

    c0621dac2fab57c4484011aa811263e9

  • SHA1

    6f55ac76e1edce7ad43cf082a8775b0d66b947f2

  • SHA256

    7e1fb350c38b9cf7c0a61681792c83555d17523e11e15546ec9b6d66ce18724d

  • SHA512

    a798b1eeb67f1b5f1900161088276cf70289ae717854272dc7c602c5c06e21f36c85fc19b5ac9a01c1dc8df016d9d7b9be02235744fae6ca55a8ff33b956a06c

  • SSDEEP

    24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

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 9 IoCs

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

  • DCRat payload 7 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 9 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e1fb350c38b9cf7c0a61681792c83555d17523e11e15546ec9b6d66ce18724d.exe
    "C:\Users\Admin\AppData\Local\Temp\7e1fb350c38b9cf7c0a61681792c83555d17523e11e15546ec9b6d66ce18724d.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3328
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providercommon\1zu9dW.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1344
        • C:\providercommon\DllCommonsvc.exe
          "C:\providercommon\DllCommonsvc.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4416
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
            5⤵
              PID:2784
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe'
              5⤵
                PID:1184
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\lsass.exe'
                5⤵
                  PID:1120
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\conhost.exe'
                  5⤵
                    PID:3628
                  • C:\Windows\System32\cmd.exe
                    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\W7FqciKhTi.bat"
                    5⤵
                      PID:320
                      • C:\Windows\system32\w32tm.exe
                        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                        6⤵
                          PID:4092
                        • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe
                          "C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe"
                          6⤵
                            PID:3440
                            • C:\Windows\System32\cmd.exe
                              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Lg3y2yDdyq.bat"
                              7⤵
                                PID:3164
                                • C:\Windows\system32\w32tm.exe
                                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                                  8⤵
                                    PID:2868
                                  • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe
                                    "C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe"
                                    8⤵
                                      PID:1948
                                      • C:\Windows\System32\cmd.exe
                                        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\yvlYFj4oEg.bat"
                                        9⤵
                                          PID:2928
                                          • C:\Windows\system32\w32tm.exe
                                            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                                            10⤵
                                              PID:4164
                                            • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe
                                              "C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe"
                                              10⤵
                                                PID:4776
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe'" /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:2860
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:5016
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:4784
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\providercommon\lsass.exe'" /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:4828
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\providercommon\lsass.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:4748
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\providercommon\lsass.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:1320
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 12 /tr "'C:\providercommon\conhost.exe'" /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:3984
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:1748
                            • C:\Windows\system32\schtasks.exe
                              schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\providercommon\conhost.exe'" /rl HIGHEST /f
                              1⤵
                              • Process spawned unexpected child process
                              • Creates scheduled task(s)
                              PID:1416

                            Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

                            • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

                            • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

                            • C:\Program Files (x86)\Windows Defender\ja-JP\taskhostw.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

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

                              Filesize

                              2KB

                              MD5

                              d85ba6ff808d9e5444a4b369f5bc2730

                              SHA1

                              31aa9d96590fff6981b315e0b391b575e4c0804a

                              SHA256

                              84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

                              SHA512

                              8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

                              Filesize

                              1KB

                              MD5

                              baf55b95da4a601229647f25dad12878

                              SHA1

                              abc16954ebfd213733c4493fc1910164d825cac8

                              SHA256

                              ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

                              SHA512

                              24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

                            • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                              Filesize

                              944B

                              MD5

                              d28a889fd956d5cb3accfbaf1143eb6f

                              SHA1

                              157ba54b365341f8ff06707d996b3635da8446f7

                              SHA256

                              21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

                              SHA512

                              0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

                            • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                              Filesize

                              944B

                              MD5

                              e243a38635ff9a06c87c2a61a2200656

                              SHA1

                              ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc

                              SHA256

                              af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f

                              SHA512

                              4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4

                            • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

                              Filesize

                              944B

                              MD5

                              a8e8360d573a4ff072dcc6f09d992c88

                              SHA1

                              3446774433ceaf0b400073914facab11b98b6807

                              SHA256

                              bf5e284e8f95122bf75ead61c7e2b40f55c96742b05330b5b1cb7915991df13b

                              SHA512

                              4ee5167643d82082f57c42616007ef9be57f43f9731921bdf7bca611a914724ad94072d3c8f5b130fa54129e5328ccdebf37ba74339c37deb53e79df5cdf0dbe

                            • C:\Users\Admin\AppData\Local\Temp\Lg3y2yDdyq.bat

                              Filesize

                              224B

                              MD5

                              4cd57e5fa7873f788665c4b872e50cab

                              SHA1

                              ef4201167d06b8a04cf14899de5e37dabc45586f

                              SHA256

                              e67ba50ff7be632cc10e871865d541ccdc05d5c8b3e91b5e4ca9d1e2bd88e24f

                              SHA512

                              6a2490852aef11814ae3f8292e8fcdab26232478a0d7906e1b69c38aa9e52aba427cf48485a42515a9f362433319ace9795c1106ab17b0b0bd816450800d9a70

                            • C:\Users\Admin\AppData\Local\Temp\W7FqciKhTi.bat

                              Filesize

                              224B

                              MD5

                              0c45c49083730037ad428ffa9724f327

                              SHA1

                              9f767b974068d107456c37e55e2393827eec02b4

                              SHA256

                              cdc846091084da837ee12ecbf3bffa0de02eedbd72fa6fc471142f116804f386

                              SHA512

                              490e42d9ba27dba8fd254a956577156e4e0c00cdfeb5f28633a980502b62ff3bb084f6ba547fc8dda70c06998d0cbe7c9a056afc7293ff6b2e64c6fa474577e8

                            • C:\Users\Admin\AppData\Local\Temp\yvlYFj4oEg.bat

                              Filesize

                              224B

                              MD5

                              1bad754945f696a7306afc6565220eed

                              SHA1

                              39ca196a43de49ce964918b319c475bd2f95c5de

                              SHA256

                              e8d0d585f7f98c33c25c025cbd2671ef25def40ec26c62f5a013563e7c8cd77f

                              SHA512

                              36b4c99255e05dbd5b5126ee14f2e9609244ca3680bfd9f45590386d5438ba458ef416fa1861cc7466c0c07a836781a0970bdde0ff6ee64417468765c8260275

                            • C:\providercommon\1zu9dW.bat

                              Filesize

                              36B

                              MD5

                              6783c3ee07c7d151ceac57f1f9c8bed7

                              SHA1

                              17468f98f95bf504cc1f83c49e49a78526b3ea03

                              SHA256

                              8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

                              SHA512

                              c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

                            • C:\providercommon\DllCommonsvc.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

                            • C:\providercommon\DllCommonsvc.exe

                              Filesize

                              1.0MB

                              MD5

                              bd31e94b4143c4ce49c17d3af46bcad0

                              SHA1

                              f8c51ff3ff909531d9469d4ba1bbabae101853ff

                              SHA256

                              b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

                              SHA512

                              f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

                            • C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

                              Filesize

                              197B

                              MD5

                              8088241160261560a02c84025d107592

                              SHA1

                              083121f7027557570994c9fc211df61730455bb5

                              SHA256

                              2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

                              SHA512

                              20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

                            • memory/1120-149-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1120-159-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1184-148-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1184-146-0x000002E5A89A0000-0x000002E5A89C2000-memory.dmp

                              Filesize

                              136KB

                            • memory/1184-157-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1948-173-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/1948-175-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/2784-161-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/2784-152-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/3440-165-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/3440-167-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/3628-154-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/3628-150-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/4416-140-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/4416-147-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB

                            • memory/4416-139-0x0000000000F40000-0x0000000001050000-memory.dmp

                              Filesize

                              1.1MB

                            • memory/4776-180-0x00007FF8D0450000-0x00007FF8D0F11000-memory.dmp

                              Filesize

                              10.8MB