Analysis

  • max time kernel
    125s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-07-2024 02:17

General

  • Target

    249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe

  • Size

    829KB

  • MD5

    75efabc3056a03a80af5f744f2c7f616

  • SHA1

    8c8d4b0dd3b3f3cafcc55841431a3f56be29c47f

  • SHA256

    249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92

  • SHA512

    e552ed4b4a06e4daf004832153e1904e6ad19be127bfdb479f0688a5ae7425618ffac17c9a686971b72beb8a46f48c57fc6a628b6a4302d00a9c1650fa12c798

  • SSDEEP

    12288:PEyrEZFe6JTVqa28z0SOGBslmJrZpUpazI5Izpbpwvr2/QJVKOEpiu:s7e6JTVXaGu2M5IzNpwS/QJVKO4

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 54 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 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 54 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 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\249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe
    "C:\Users\Admin\AppData\Local\Temp\249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1472
    • C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\winlogon.exe
      "C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1348
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4388
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:216
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1428
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3636
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1532
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3564
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\msedge.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4576
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Downloads\msedge.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3360
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Users\Default\Downloads\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3936
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Downloads\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 14 /tr "'C:\Windows\appcompat\Programs\MusNotification.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Windows\appcompat\Programs\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4624
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 10 /tr "'C:\Windows\appcompat\Programs\MusNotification.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2680
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1580
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\Default User\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:840
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\msedge.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1560
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2116
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 6 /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\msedge.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Windows\GameBarPresenceWriter\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\GameBarPresenceWriter\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Windows\GameBarPresenceWriter\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4452
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\Microsoft OneDrive\setup\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1816
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Users\All Users\Microsoft OneDrive\setup\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2788
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 8 /tr "'C:\Users\All Users\Microsoft OneDrive\setup\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3244
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files\VideoLAN\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4404
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Program Files\VideoLAN\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2560
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb922" /sc MINUTE /mo 9 /tr "'C:\Program Files\Internet Explorer\249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1448
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb922" /sc MINUTE /mo 5 /tr "'C:\Program Files\Internet Explorer\249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4428
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 11 /tr "'C:\Windows\Sun\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\Sun\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 13 /tr "'C:\Windows\Sun\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:820
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 8 /tr "'C:\Windows\de-DE\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4800
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\de-DE\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1912
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 12 /tr "'C:\Windows\de-DE\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3008
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4408
  • 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
    • Scheduled Task/Job: Scheduled Task
    PID:1684
  • 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
    • Scheduled Task/Job: Scheduled Task
    PID:1668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Users\Admin\Videos\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\Admin\Videos\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\Videos\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2280
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:112
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1504
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Media Player\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3924
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3684
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Media Player\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2024
  • 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=4156,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:8
    1⤵
      PID:4304

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Discovery

    Query Registry

    2
    T1012

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\appcompat\Programs\MusNotification.exe
      Filesize

      829KB

      MD5

      75efabc3056a03a80af5f744f2c7f616

      SHA1

      8c8d4b0dd3b3f3cafcc55841431a3f56be29c47f

      SHA256

      249009648a4e88d2cd0fb5e595c911e5dca3ec1d70252981554ab0331800cb92

      SHA512

      e552ed4b4a06e4daf004832153e1904e6ad19be127bfdb479f0688a5ae7425618ffac17c9a686971b72beb8a46f48c57fc6a628b6a4302d00a9c1650fa12c798

    • memory/1472-0-0x00007FFCA8693000-0x00007FFCA8695000-memory.dmp
      Filesize

      8KB

    • memory/1472-1-0x0000000000A50000-0x0000000000B26000-memory.dmp
      Filesize

      856KB

    • memory/1472-2-0x00007FFCA8690000-0x00007FFCA9151000-memory.dmp
      Filesize

      10.8MB

    • memory/1472-50-0x00007FFCA8690000-0x00007FFCA9151000-memory.dmp
      Filesize

      10.8MB