Analysis

  • max time kernel
    102s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2025, 06:15

General

  • Target

    acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe

  • Size

    1.2MB

  • MD5

    b72cb4fc6352f3c73d2ce44a6a7283cc

  • SHA1

    820c462b9f86be10b3d36c9c9c18a79bdebac8cc

  • SHA256

    acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45

  • SHA512

    90455c4935e5436e76f3f99c95084fa77cdea33a058b6794971ff5bff3f45ab3005f9a97195916a42b2f1048534caed1cf7ab29067914dd84e5bd82b6c34eda3

  • SSDEEP

    24576:B1QcHlC7WjMPqsBsOOJ6uFWn2uuJbWV99NOyWIbQ+/bRm:B1/ClPOJRWnZobk9ocQ+DR

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 45 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
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 9 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 45 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 34 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\acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.exe
    "C:\Users\Admin\AppData\Local\Temp\acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45.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:3980
    • C:\Recovery\WindowsRE\dllhost.exe
      "C:\Recovery\WindowsRE\dllhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3764
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 11 /tr "'C:\87efddaf44110a3d80760c508da79ad7\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3532
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\87efddaf44110a3d80760c508da79ad7\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5424
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\87efddaf44110a3d80760c508da79ad7\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2464
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1152
  • 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:996
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2348
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3684
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5852
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Setup Files\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4568
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Setup Files\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4636
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Adobe\Acrobat Reader DC\Setup Files\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Windows\InputMethod\CHT\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4680
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\InputMethod\CHT\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4664
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Windows\InputMethod\CHT\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4812
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4796
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4592
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Music\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Public\Music\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Users\Public\Music\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3736
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5600
  • 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:5544
  • 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:5708
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5956
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5992
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows NT\Accessories\fr-FR\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1804
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4848
  • 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:4840
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4924
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\ebea8a0c5b7ebb8dc5b60da7\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:380
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Windows\Sun\Java\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\Sun\Java\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Windows\Sun\Java\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3984
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Program Files\7-Zip\Lang\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2320
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3996
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files\7-Zip\Lang\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3724
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4192
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1064

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\InputMethod\CHT\fontdrvhost.exe

    Filesize

    1.2MB

    MD5

    b72cb4fc6352f3c73d2ce44a6a7283cc

    SHA1

    820c462b9f86be10b3d36c9c9c18a79bdebac8cc

    SHA256

    acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45

    SHA512

    90455c4935e5436e76f3f99c95084fa77cdea33a058b6794971ff5bff3f45ab3005f9a97195916a42b2f1048534caed1cf7ab29067914dd84e5bd82b6c34eda3

  • memory/3980-0-0x00007FFDCACD3000-0x00007FFDCACD5000-memory.dmp

    Filesize

    8KB

  • memory/3980-1-0x00000000009F0000-0x0000000000B22000-memory.dmp

    Filesize

    1.2MB

  • memory/3980-2-0x00007FFDCACD0000-0x00007FFDCB791000-memory.dmp

    Filesize

    10.8MB

  • memory/3980-3-0x00000000012E0000-0x00000000012FC000-memory.dmp

    Filesize

    112KB

  • memory/3980-4-0x000000001B6F0000-0x000000001B740000-memory.dmp

    Filesize

    320KB

  • memory/3980-5-0x0000000001310000-0x0000000001326000-memory.dmp

    Filesize

    88KB

  • memory/3980-6-0x0000000001330000-0x000000000133C000-memory.dmp

    Filesize

    48KB

  • memory/3980-48-0x00007FFDCACD0000-0x00007FFDCB791000-memory.dmp

    Filesize

    10.8MB