Analysis

  • max time kernel
    94s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-02-2025 03:36

General

  • Target

    9bfdb51d9bf8b65fb81ea7083f147695.exe

  • Size

    2.7MB

  • MD5

    9bfdb51d9bf8b65fb81ea7083f147695

  • SHA1

    c0eeb27e17afd5c9c2c2887aefadb171657f79bb

  • SHA256

    7b3cb0689a20b3d447c436253a2f44995562052e7f46094c93c12a375ebea0cb

  • SHA512

    12820d32910da209fcd21b0d78a821d9e5778800224d9405cc6c55bfa9ea6fc2435f2ab83c130beb07e6c5d393ede8114d9aaa4d82665cbf64fc5b45479ebb0f

  • SSDEEP

    49152:twqc9JR8znSZnLiIvYqxT4icZ1TQjI6bEfmI4xvykALzt:thEtjvFxT5cZ1EjI6bkp+yt

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Process spawned unexpected child process 27 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 4 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
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 20 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • System policy modification 1 TTPs 6 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\9bfdb51d9bf8b65fb81ea7083f147695.exe
    "C:\Users\Admin\AppData\Local\Temp\9bfdb51d9bf8b65fb81ea7083f147695.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4568
    • C:\Program Files\MSBuild\RuntimeBroker.exe
      "C:\Program Files\MSBuild\RuntimeBroker.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:4080
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Program Files\Crashpad\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3184
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\Crashpad\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 9 /tr "'C:\Program Files\Crashpad\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2236
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4232
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Users\Default User\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1124
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files\MSBuild\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3440
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\MSBuild\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3456
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files\MSBuild\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3092
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Start Menu\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\All Users\Start Menu\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:836
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 6 /tr "'C:\Users\All Users\Start Menu\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2448
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2760
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Windows Portable Devices\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1400
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4748
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4560
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3720
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Google\Chrome\Application\123.0.6312.123\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4440
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Google\Chrome\Application\123.0.6312.123\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:640
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 13 /tr "'C:\Program Files\Google\Chrome\Application\123.0.6312.123\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Windows Portable Devices\sysmon.exe

    Filesize

    2.7MB

    MD5

    e2229c17a59afbe7f5b3baca95060b74

    SHA1

    243c2c82844df740805484d8b6dc0906660d3606

    SHA256

    f166e4695e1b6bdd72147a84d7df710533cba38432b45810aa843abdddf89e21

    SHA512

    41907807cf690b2571d4161ed26b5710ca1dc217b90384bdb859176dbc4b935629de1c204c19b6e6a550f9cd6bc8fa9afe7d9ee0d406c6db3ca035b3f4fd3239

  • C:\ProgramData\Microsoft\Windows\Start Menu\StartMenuExperienceHost.exe

    Filesize

    2.7MB

    MD5

    9bfdb51d9bf8b65fb81ea7083f147695

    SHA1

    c0eeb27e17afd5c9c2c2887aefadb171657f79bb

    SHA256

    7b3cb0689a20b3d447c436253a2f44995562052e7f46094c93c12a375ebea0cb

    SHA512

    12820d32910da209fcd21b0d78a821d9e5778800224d9405cc6c55bfa9ea6fc2435f2ab83c130beb07e6c5d393ede8114d9aaa4d82665cbf64fc5b45479ebb0f

  • C:\Recovery\WindowsRE\SearchApp.exe

    Filesize

    2.7MB

    MD5

    183bbb7a772b09ebe79a8f7cd7086c14

    SHA1

    6210a72bcc1cd7cc65e4a5106052433ba7e9ee22

    SHA256

    b16c5fac919ae2b0bef6f2dc1c88ed015c8844ccee3b109438d522b2a70df939

    SHA512

    9ebb16bfc80a81b1b30201c99beb08fda0413696145bcd73ed92e7a4ffc49bea9810f19bca04f00b2fc69a3279b5551c3d82d7f659530288be8b61a89541c420

  • memory/4568-12-0x000000001C0F0000-0x000000001C0F8000-memory.dmp

    Filesize

    32KB

  • memory/4568-14-0x000000001C7A0000-0x000000001CCC8000-memory.dmp

    Filesize

    5.2MB

  • memory/4568-5-0x000000001C100000-0x000000001C150000-memory.dmp

    Filesize

    320KB

  • memory/4568-6-0x000000001BA30000-0x000000001BA38000-memory.dmp

    Filesize

    32KB

  • memory/4568-7-0x000000001C0B0000-0x000000001C0C0000-memory.dmp

    Filesize

    64KB

  • memory/4568-8-0x000000001C0C0000-0x000000001C0D6000-memory.dmp

    Filesize

    88KB

  • memory/4568-9-0x000000001C0E0000-0x000000001C0E8000-memory.dmp

    Filesize

    32KB

  • memory/4568-10-0x000000001C260000-0x000000001C26A000-memory.dmp

    Filesize

    40KB

  • memory/4568-11-0x000000001C150000-0x000000001C1A6000-memory.dmp

    Filesize

    344KB

  • memory/4568-0-0x00007FFB410E3000-0x00007FFB410E5000-memory.dmp

    Filesize

    8KB

  • memory/4568-13-0x000000001C1A0000-0x000000001C1B2000-memory.dmp

    Filesize

    72KB

  • memory/4568-4-0x000000001C090000-0x000000001C0AC000-memory.dmp

    Filesize

    112KB

  • memory/4568-17-0x000000001C1F0000-0x000000001C1FC000-memory.dmp

    Filesize

    48KB

  • memory/4568-19-0x000000001C210000-0x000000001C21C000-memory.dmp

    Filesize

    48KB

  • memory/4568-20-0x000000001C220000-0x000000001C22A000-memory.dmp

    Filesize

    40KB

  • memory/4568-18-0x000000001C200000-0x000000001C20E000-memory.dmp

    Filesize

    56KB

  • memory/4568-16-0x000000001C1E0000-0x000000001C1E8000-memory.dmp

    Filesize

    32KB

  • memory/4568-15-0x000000001C1D0000-0x000000001C1D8000-memory.dmp

    Filesize

    32KB

  • memory/4568-21-0x000000001C230000-0x000000001C23C000-memory.dmp

    Filesize

    48KB

  • memory/4568-3-0x000000001BA10000-0x000000001BA1E000-memory.dmp

    Filesize

    56KB

  • memory/4568-2-0x00007FFB410E0000-0x00007FFB41BA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4568-1-0x0000000000BB0000-0x0000000000E64000-memory.dmp

    Filesize

    2.7MB

  • memory/4568-209-0x00007FFB410E0000-0x00007FFB41BA1000-memory.dmp

    Filesize

    10.8MB