Analysis

  • max time kernel
    127s
  • max time network
    150s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01/11/2022, 00:30

General

  • Target

    9f31c60a44a796647e0c24eaf74cf7e1bb9b0e48b43610cc69944b4141df8211.exe

  • Size

    1.3MB

  • MD5

    f05541fe0cb50cda68884bfd8c160b7d

  • SHA1

    51d5179bc1e6e81c22fac9e3bc085471fc2b2a2e

  • SHA256

    9f31c60a44a796647e0c24eaf74cf7e1bb9b0e48b43610cc69944b4141df8211

  • SHA512

    266797717fe2b9c0e622085390c90f958cde4ffda9e5177823b1b2b2dab6102d430097a85e62cfc57157c96f7308d3f9f015cb1344e076eeaf6324e0df814508

  • 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 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Windows 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 9 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9f31c60a44a796647e0c24eaf74cf7e1bb9b0e48b43610cc69944b4141df8211.exe
    "C:\Users\Admin\AppData\Local\Temp\9f31c60a44a796647e0c24eaf74cf7e1bb9b0e48b43610cc69944b4141df8211.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providercommon\1zu9dW.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4012
        • C:\providercommon\DllCommonsvc.exe
          "C:\providercommon\DllCommonsvc.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:576
          • 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:3928
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\System.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:644
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\Prefetch\ReadyBoot\sihost.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4636
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\Fonts\conhost.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4528
          • C:\providercommon\System.exe
            "C:\providercommon\System.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:1000
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\providercommon\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4056
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\providercommon\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\providercommon\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4396
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Windows\Prefetch\ReadyBoot\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5048
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Windows\Prefetch\ReadyBoot\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Windows\Prefetch\ReadyBoot\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5008
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 9 /tr "'C:\Windows\Fonts\conhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Windows\Fonts\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4704
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 10 /tr "'C:\Windows\Fonts\conhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4208

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    3KB

    MD5

    8592ba100a78835a6b94d5949e13dfc1

    SHA1

    63e901200ab9a57c7dd4c078d7f75dcd3b357020

    SHA256

    fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c

    SHA512

    87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3

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

    Filesize

    1KB

    MD5

    cd6448170a2a479bc0eecbbbedbf288c

    SHA1

    68151783f621f379cb6b75c184bb2dddc3dad40c

    SHA256

    cc93065ef11aed27cec65cc5cfcb695d7a281972977908fd94e4b4a6fd13835f

    SHA512

    8a23c82433cf271a4cd78d6517a51a93dcb24e038f49b1dc18f6b9fdb17dcd7fca8672ccd7ff84a60ef9c72bc6753b85803314dd318e69f569e633b537bc0b37

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

    Filesize

    1KB

    MD5

    59e0297f6fabe36839c8fab6ecdf76ad

    SHA1

    e7ed52677e37b4d09d7fedd17c18c3fa92f8973f

    SHA256

    4863c173063011549dec45366077696f9bc82cbd99188083c17b7cef0608c23d

    SHA512

    8dd299cbf5b0fbe723f2b8daa91755b4ad87761a048bd82f828cba8ddf89b536c43203c9d893fb4fc6af61b5d1defc69a58a1ecf4be3c5f4e00503fed0f78e2a

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

    Filesize

    1KB

    MD5

    59e0297f6fabe36839c8fab6ecdf76ad

    SHA1

    e7ed52677e37b4d09d7fedd17c18c3fa92f8973f

    SHA256

    4863c173063011549dec45366077696f9bc82cbd99188083c17b7cef0608c23d

    SHA512

    8dd299cbf5b0fbe723f2b8daa91755b4ad87761a048bd82f828cba8ddf89b536c43203c9d893fb4fc6af61b5d1defc69a58a1ecf4be3c5f4e00503fed0f78e2a

  • 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\System.exe

    Filesize

    1.0MB

    MD5

    bd31e94b4143c4ce49c17d3af46bcad0

    SHA1

    f8c51ff3ff909531d9469d4ba1bbabae101853ff

    SHA256

    b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

    SHA512

    f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

  • C:\providercommon\System.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/576-286-0x00000000028E0000-0x00000000028EC000-memory.dmp

    Filesize

    48KB

  • memory/576-282-0x0000000000540000-0x0000000000650000-memory.dmp

    Filesize

    1.1MB

  • memory/576-285-0x00000000028D0000-0x00000000028DC000-memory.dmp

    Filesize

    48KB

  • memory/576-284-0x00000000028C0000-0x00000000028CC000-memory.dmp

    Filesize

    48KB

  • memory/576-283-0x0000000000FB0000-0x0000000000FC2000-memory.dmp

    Filesize

    72KB

  • memory/644-310-0x000002719B0A0000-0x000002719B0C2000-memory.dmp

    Filesize

    136KB

  • memory/1000-311-0x000000001B4B0000-0x000000001B4C2000-memory.dmp

    Filesize

    72KB

  • memory/1388-181-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/1388-182-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-140-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-175-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-144-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-145-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-146-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-148-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-150-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-149-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-147-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-151-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-152-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-153-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-154-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-155-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-156-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-157-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-158-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-159-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-160-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-162-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-161-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-163-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-164-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-167-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-166-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-168-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-165-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-170-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-169-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-171-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-172-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-173-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-174-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-142-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-176-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-177-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-178-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-143-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-141-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-116-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-179-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-139-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-138-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-117-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-137-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-136-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-135-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-134-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-133-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-132-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-131-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-130-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-129-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-118-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-119-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-128-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-127-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-126-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-125-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-124-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-122-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/3972-121-0x00000000777D0000-0x000000007795E000-memory.dmp

    Filesize

    1.6MB

  • memory/4528-314-0x000001F4F4540000-0x000001F4F45B6000-memory.dmp

    Filesize

    472KB