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Analysis

  • max time kernel
    122s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/02/2023, 06:38

General

  • Target

    7a98f7ef44c559242006617e4da75dd9db63bbbf2712d2dde21b468266787ca3.exe

  • Size

    1.3MB

  • MD5

    0ae19ae164fdbb2f0d14053576500479

  • SHA1

    9580e4b15c9e90f01daf4104e68755d1ab41ccb1

  • SHA256

    7a98f7ef44c559242006617e4da75dd9db63bbbf2712d2dde21b468266787ca3

  • SHA512

    ce150c9aa11553aed1632607d24c310cd0b947fffa2974c990f7bd1841cebf73326aad5759fc82dc3577b5793d42854eb3a6a9b3c7ef1f2098f8b3cc0f8d53c0

  • 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 12 IoCs

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

  • DCRat payload 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 4 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 12 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a98f7ef44c559242006617e4da75dd9db63bbbf2712d2dde21b468266787ca3.exe
    "C:\Users\Admin\AppData\Local\Temp\7a98f7ef44c559242006617e4da75dd9db63bbbf2712d2dde21b468266787ca3.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:552
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4148
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providercommon\1zu9dW.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2260
        • C:\providercommon\DllCommonsvc.exe
          "C:\providercommon\DllCommonsvc.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4576
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3164
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\odt\conhost.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:212
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Common Files\microsoft shared\csrss.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4228
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\dllhost.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1548
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\odt\services.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:208
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\p5GqN7CVuU.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1520
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:3936
              • C:\Program Files\Common Files\microsoft shared\csrss.exe
                "C:\Program Files\Common Files\microsoft shared\csrss.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 5 /tr "'C:\odt\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:\odt\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1484
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 6 /tr "'C:\odt\conhost.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 "servicess" /sc MINUTE /mo 14 /tr "'C:\odt\services.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4560
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\odt\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1436
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\odt\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files\Common Files\microsoft shared\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2560
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4296
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files\Common Files\microsoft shared\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3608
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1656
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1960
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3124

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files\Common Files\microsoft shared\csrss.exe

      Filesize

      1.0MB

      MD5

      bd31e94b4143c4ce49c17d3af46bcad0

      SHA1

      f8c51ff3ff909531d9469d4ba1bbabae101853ff

      SHA256

      b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

      SHA512

      f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

    • C:\Program Files\Common Files\microsoft shared\csrss.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\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

      d28a889fd956d5cb3accfbaf1143eb6f

      SHA1

      157ba54b365341f8ff06707d996b3635da8446f7

      SHA256

      21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

      SHA512

      0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

    • 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

      d28a889fd956d5cb3accfbaf1143eb6f

      SHA1

      157ba54b365341f8ff06707d996b3635da8446f7

      SHA256

      21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

      SHA512

      0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

    • C:\Users\Admin\AppData\Local\Temp\p5GqN7CVuU.bat

      Filesize

      221B

      MD5

      0de202ae440ce101c273744268fc7cdf

      SHA1

      72efeab92f0f107823eeffa678b604e3938f2223

      SHA256

      8c44396d3e8ef4e4a8e8a9c0b8186371052e0c0c283838f33efd0bd08c43dbc2

      SHA512

      e2f306c9d1a58127618a916397f19ae547a682acf142f3bc3cda2186c4c0bc132516eae1784070a783bae6feef8438dac62cbe37cdb57f2c83f9185c0127739c

    • 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/208-153-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/208-160-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/212-164-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/212-152-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/1548-165-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/1548-155-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/1884-169-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/1884-170-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/3164-162-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/3164-151-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/3164-147-0x000001DE78FF0000-0x000001DE79012000-memory.dmp

      Filesize

      136KB

    • memory/4228-156-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/4228-154-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/4576-148-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/4576-140-0x00007FF83BBB0000-0x00007FF83C671000-memory.dmp

      Filesize

      10.8MB

    • memory/4576-139-0x0000000000DA0000-0x0000000000EB0000-memory.dmp

      Filesize

      1.1MB