Analysis

  • max time kernel
    44s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/03/2025, 19:00

General

  • Target

    1f1f2a5e827f18875756710c0bc7c9016d4f1caf2f046c77abf55ec2b1c06eba.exe

  • Size

    6.6MB

  • MD5

    de0a7019edee67c4d04bd23a449778a5

  • SHA1

    d919f8c2dd748a28f1d5db2f2325ade04a30d106

  • SHA256

    1f1f2a5e827f18875756710c0bc7c9016d4f1caf2f046c77abf55ec2b1c06eba

  • SHA512

    aadcdf280804d7a5d34ce3df08b5af7309ba43e0e03f3823e6358648e7e608b3e7bc6f8f5c09009dc4988accdfe54c289a32363c22ae3326e42dc12d8fb8d56c

  • SSDEEP

    196608:dMPUeNo7jvD6fQiDrr6bVFqklb/DwjeKx85xgo8+:deg3vQQWIFRTDrfxZ

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 21 IoCs

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

  • DCRat payload 4 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 6 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 21 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 31 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\1f1f2a5e827f18875756710c0bc7c9016d4f1caf2f046c77abf55ec2b1c06eba.exe
    "C:\Users\Admin\AppData\Local\Temp\1f1f2a5e827f18875756710c0bc7c9016d4f1caf2f046c77abf55ec2b1c06eba.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\Temp\udatehost.exe
      "C:\Users\Admin\AppData\Local\Temp\udatehost.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Hyperwin\Hjb4V5P3cHCi148eIE3WAmz4evXIC.vbe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2236
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Hyperwin\R3CMjTZP8BpSz8qPti5wX1T6HFu.bat" "
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1924
          • C:\Hyperwin\serversession.exe
            "C:\Hyperwin\serversession.exe"
            5⤵
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1760
            • C:\Hyperwin\WmiPrvSE.exe
              "C:\Hyperwin\WmiPrvSE.exe"
              6⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2044
    • C:\Users\Admin\AppData\Local\Temp\LunaExecuter.exe
      "C:\Users\Admin\AppData\Local\Temp\LunaExecuter.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2760
      • C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
        "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
        3⤵
        • Executes dropped EXE
        PID:2884
      • C:\Users\Admin\AppData\Local\Temp\chet.exe
        "C:\Users\Admin\AppData\Local\Temp\chet.exe"
        3⤵
        • Executes dropped EXE
        PID:2800
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Hyperwin\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Hyperwin\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1284
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Hyperwin\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 10 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 5 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 8 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\audiodg.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1380
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\audiodg.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "audiodga" /sc MINUTE /mo 5 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\audiodg.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 "WmiPrvSEW" /sc MINUTE /mo 10 /tr "'C:\Hyperwin\WmiPrvSE.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2920
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Hyperwin\WmiPrvSE.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\Hyperwin\WmiPrvSE.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 "cmdc" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\cmd.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1484
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\MSOCache\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1228
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows Journal\en-US\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2804
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows Journal\en-US\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Journal\en-US\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1552
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 11 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:996
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\Recovery\20e7eb62-69f6-11ef-be0c-62cb582c238c\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1256

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Hyperwin\Hjb4V5P3cHCi148eIE3WAmz4evXIC.vbe

    Filesize

    212B

    MD5

    85877ab6e153bf42e5689631d026c9b1

    SHA1

    c98c4a3af23d8b123d6c00b534b7e518c8345da9

    SHA256

    08085e4bf0d02ae55ec88d9b2c2edcbe457ebeeb67856adfdddd7e0e03e0133d

    SHA512

    5282ce77719d279f083e115ec34ebeb1b1fc15810ac11edef64271cf591d2d5bf92ff45cdd6949a723aa83d2e6519e1c983c1cbcf933e139505ae57f2b7dfbc0

  • C:\Hyperwin\R3CMjTZP8BpSz8qPti5wX1T6HFu.bat

    Filesize

    31B

    MD5

    9b59f35fd079050a918897f7f14aa2b1

    SHA1

    60c5073fa99b294a500835deeb6bb9c9b8e50143

    SHA256

    3f983a6ddbe0a99e1df884a691c894aae06d6c2039450a2f8e3d7f95b0d1bce9

    SHA512

    16ab40fcab72d87b0ccb2c46d8e3570b431c48d79a898f38808ecb04da1161376df275d181923010da1ba7d29577826a023c0bfb43b840e6a9eae58515082f75

  • C:\Hyperwin\serversession.exe

    Filesize

    1.2MB

    MD5

    b72cb4fc6352f3c73d2ce44a6a7283cc

    SHA1

    820c462b9f86be10b3d36c9c9c18a79bdebac8cc

    SHA256

    acab91c3e070c3fdc13dbdd5414d88bc3bf021b99c5d8e4ad291da68b701cc45

    SHA512

    90455c4935e5436e76f3f99c95084fa77cdea33a058b6794971ff5bff3f45ab3005f9a97195916a42b2f1048534caed1cf7ab29067914dd84e5bd82b6c34eda3

  • C:\Users\Admin\AppData\Local\Temp\LunaExecuter.exe

    Filesize

    9.7MB

    MD5

    f5d507da4b644c46b073a0a04dec8f42

    SHA1

    0aa95b15479323efcb034021b0285a054c620c4d

    SHA256

    2199423602212428f00dfbe9eeaf0879c03ea2fe03af979728a75e7b0dc25211

    SHA512

    b8e79ac75d7dd88352c934ea0ea2ae8a744af1e33a8f2f5aca90fd533c3e33b9950c4566a66a348734766b1e4fcd55e633f5b43e6ca20f352a97ef881858947e

  • C:\Users\Admin\AppData\Local\Temp\chet.exe

    Filesize

    300KB

    MD5

    20cc18dc80ab60c2674753c21aee226e

    SHA1

    14e26414a30cb3fa982b81cfffc2c7362eb4ed3e

    SHA256

    f0c1314bfdebfb1d10f0bb5653784c84a716630830c30cf767e86a176f1fc4d2

    SHA512

    e19726cb061f7feaada09087e5a92bfa2107e0db0c3f34c987c59e6725f9eca3f892ded6ef1023307b10aa44ea0d0fd2a45f7580be3fa63d5618b3644aa95b26

  • C:\Users\Admin\AppData\Local\Temp\udatehost.exe

    Filesize

    1.5MB

    MD5

    470d853d64979edee9ff702a6313b5ab

    SHA1

    a6f52d4571e775e9900ef46a484265a0cb02484f

    SHA256

    9f4067721f2f36ed750864b60714469e752e6b4a0b560e763edf3ad4eb6cf29e

    SHA512

    6fdbafb7461a1b243d8605c4761a678ceea4c70f72532a091bcddbeb52bee993e4d89d31558e349052a68d2e6d30c4122098086d7d5a3162894a8e8afe70b038

  • \Users\Admin\AppData\Local\Temp\Bootstrapper.exe

    Filesize

    9.4MB

    MD5

    f2a6133b7f38fc49f792ae799d1b4750

    SHA1

    6bef46ddde325f45a0e9ff123112c96bbd47c795

    SHA256

    37bde6655e1272e159b9c2e3a7eee3f4e9a837c0f04240645d3991d112287f8d

    SHA512

    f9611bed83b4bce1841868880a42dacb6b8f7e8859be1d85b3c8d3a365a0244566cbfb12294c7b2c82b15d6c0e47095d8246a95d522c3a064a0d8511b2411254

  • memory/1760-49-0x0000000000360000-0x000000000037C000-memory.dmp

    Filesize

    112KB

  • memory/1760-50-0x0000000000380000-0x0000000000396000-memory.dmp

    Filesize

    88KB

  • memory/1760-51-0x0000000000240000-0x000000000024C000-memory.dmp

    Filesize

    48KB

  • memory/1760-48-0x0000000000B90000-0x0000000000CC2000-memory.dmp

    Filesize

    1.2MB

  • memory/2044-72-0x0000000000910000-0x0000000000A42000-memory.dmp

    Filesize

    1.2MB

  • memory/2760-39-0x0000000000400000-0x0000000000DBC000-memory.dmp

    Filesize

    9.7MB

  • memory/2800-41-0x0000000000BC0000-0x0000000000C12000-memory.dmp

    Filesize

    328KB

  • memory/3008-25-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

    Filesize

    9.9MB

  • memory/3008-0-0x000007FEF5023000-0x000007FEF5024000-memory.dmp

    Filesize

    4KB

  • memory/3008-1-0x00000000008E0000-0x0000000000F86000-memory.dmp

    Filesize

    6.6MB

  • memory/3008-6-0x000007FEF5020000-0x000007FEF5A0C000-memory.dmp

    Filesize

    9.9MB