Analysis

  • max time kernel
    117s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/03/2025, 06:16

General

  • Target

    c45000d07293154a655ba52ffb7bab99.exe

  • Size

    849KB

  • MD5

    c45000d07293154a655ba52ffb7bab99

  • SHA1

    4b4fbc2c00cf6c6c6fcea58074213c4f0606b80a

  • SHA256

    f639fc426671cba387b08b8c14743bccfd9d13866982573a1ed2e150967c17ac

  • SHA512

    2805351e0080a62061efb9bc7e3d953221df1180edfcf1142b59302a0afbcf3332a8855deaa9f147ebb11789a3cdbadf6073306000d03698537813bf579df674

  • SSDEEP

    12288:I6NE5ig5Fttrh5PxjUm5SvDdLILaBFkjKuAMx6A5gtbGk84Ca04jtiPBgGKYTx:I6N297PxbsKtC5AHgk

Score
10/10

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.

  • DCRat payload 7 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Drops file in Windows directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 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\c45000d07293154a655ba52ffb7bab99.exe
    "C:\Users\Admin\AppData\Local\Temp\c45000d07293154a655ba52ffb7bab99.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Windows\BitLockerDiscoveryVolumeContents\sppsvc.exe
      "C:\Windows\BitLockerDiscoveryVolumeContents\sppsvc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2360
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2732
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2820
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\taskhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2764
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2612
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 9 /tr "'C:\MSOCache\All Users\{90140000-00BA-0409-0000-0000000FF1CE}-C\taskhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2720
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2960
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2740
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2140
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2620
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\Windows\BitLockerDiscoveryVolumeContents\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1804
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:272
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 6 /tr "'C:\Windows\LiveKernelReports\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:900
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "c45000d07293154a655ba52ffb7bab99c" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Reader\c45000d07293154a655ba52ffb7bab99.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "c45000d07293154a655ba52ffb7bab99" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Reader\c45000d07293154a655ba52ffb7bab99.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2904
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "c45000d07293154a655ba52ffb7bab99c" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\Reader 9.0\Reader\c45000d07293154a655ba52ffb7bab99.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Start Menu\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\All Users\Start Menu\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Start Menu\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:352
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\audiodg.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1484
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\audiodg.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 "servicess" /sc MINUTE /mo 12 /tr "'C:\Users\Default\services.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1096
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Default\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1640
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Users\Default\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2976

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\audiodg.exe

    Filesize

    849KB

    MD5

    cec5e51385141347a4f154b623f0700b

    SHA1

    021bfe75786cc03e790499c9dbb615bb835e0497

    SHA256

    850f6cd9c570df9ec1befe8bd6dcc988f93b79b99b597be0c457f00075bf8267

    SHA512

    e31469bbd8618a049b290e92da40e3ae12d812f4b70b7fecb493156ec930277f9b902883aef881c60bb662223f788a955899d2d89473f6237ef6dfb857c74560

  • C:\Program Files (x86)\Microsoft Synchronization Services\ADO.NET\v1.0\wininit.exe

    Filesize

    849KB

    MD5

    045db68f4f8859fbdd8abb3c1f3cff3d

    SHA1

    0f6189dbc1088120d0970ac69cede19e9d95aff4

    SHA256

    015dce219e96dee7a7abf161a98b4e85c4d3f1a14c9eac80d934220eff358ce3

    SHA512

    c08ccda074101da129dfb1dd9c6a35be0a6b7436ab82a29cbdc322c4184a3e5fc5fd9f97e2c0cd28b095329e3552afeaa5e213e593cfb940616cef9de49aeb84

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

    Filesize

    849KB

    MD5

    66a36912b8f116a56e43c44395008f49

    SHA1

    9e1bf8817675868a813d6d4a4a968789d066236d

    SHA256

    d77b7c086995f9c8617f40602fdd2bedc9b72e08dd226415d532e846297dc82b

    SHA512

    9e06fc7cfdfdeb8d5fbd7bc597d25b478d629cc7d01e2e745f128a0685a1c89a916bed0f1aabbe6f3e9b6c920c52e2768f2712805df9a584a75ba007ed0cd84e

  • C:\Users\Default\RCXC6FA.tmp

    Filesize

    849KB

    MD5

    804112e31f13907f3011626e221a0b91

    SHA1

    0e8806cf65a6253f1470966b4ce6ef48d6afcc2b

    SHA256

    f957b6f92f03cfecc6d64a75ae3a2252f25ccebb5db7756672edd1cc9104124e

    SHA512

    11b3a6c395fb5b5f690c0419655a1fad7e309e48a66cd62d4ff023adeeebec8e29a76c803f194defd47520e4ada356547c4259dfce68dc027e86887a4a767705

  • C:\Windows\LiveKernelReports\dwm.exe

    Filesize

    849KB

    MD5

    c45000d07293154a655ba52ffb7bab99

    SHA1

    4b4fbc2c00cf6c6c6fcea58074213c4f0606b80a

    SHA256

    f639fc426671cba387b08b8c14743bccfd9d13866982573a1ed2e150967c17ac

    SHA512

    2805351e0080a62061efb9bc7e3d953221df1180edfcf1142b59302a0afbcf3332a8855deaa9f147ebb11789a3cdbadf6073306000d03698537813bf579df674

  • memory/2360-140-0x0000000000230000-0x000000000030A000-memory.dmp

    Filesize

    872KB

  • memory/2532-7-0x0000000000700000-0x0000000000710000-memory.dmp

    Filesize

    64KB

  • memory/2532-2-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

    Filesize

    9.9MB

  • memory/2532-6-0x00000000003A0000-0x00000000003A8000-memory.dmp

    Filesize

    32KB

  • memory/2532-5-0x0000000000380000-0x0000000000396000-memory.dmp

    Filesize

    88KB

  • memory/2532-3-0x0000000000350000-0x000000000036C000-memory.dmp

    Filesize

    112KB

  • memory/2532-0-0x000007FEF5313000-0x000007FEF5314000-memory.dmp

    Filesize

    4KB

  • memory/2532-1-0x00000000003B0000-0x000000000048A000-memory.dmp

    Filesize

    872KB

  • memory/2532-8-0x0000000000920000-0x000000000092C000-memory.dmp

    Filesize

    48KB

  • memory/2532-4-0x0000000000370000-0x0000000000380000-memory.dmp

    Filesize

    64KB

  • memory/2532-141-0x000007FEF5310000-0x000007FEF5CFC000-memory.dmp

    Filesize

    9.9MB