Analysis

  • max time kernel
    95s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-01-2025 05:23

General

  • Target

    f516c6f52dece526d88114f3fd79d989dc4d9fd096d880fab7142ef5188ef1fe.exe

  • Size

    2.7MB

  • MD5

    917db17f1656134023dec1f54a66cfba

  • SHA1

    7b060b95b3e9a5d86c7a7452e21c855c32ba3c13

  • SHA256

    f516c6f52dece526d88114f3fd79d989dc4d9fd096d880fab7142ef5188ef1fe

  • SHA512

    f9edae484f8d59202bb776a93b440a98aab9619f77464675d9d5e1e06d53fedf89c1aa4104b002312fe17081c7248837f2e002f7fe2e2509460a169174562207

  • SSDEEP

    49152:MDkZWCF2T8juUND4YQxZzfllulb0fnyN27mEGnjYEhQ+QK3:t4CF2sjELplCbmyN27PxEhQ+h

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 6 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 15 IoCs
  • Drops file in Windows directory 5 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 26 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\f516c6f52dece526d88114f3fd79d989dc4d9fd096d880fab7142ef5188ef1fe.exe
    "C:\Users\Admin\AppData\Local\Temp\f516c6f52dece526d88114f3fd79d989dc4d9fd096d880fab7142ef5188ef1fe.exe"
    1⤵
    • UAC bypass
    • Checks computer location settings
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3168
    • C:\Recovery\WindowsRE\dwm.exe
      "C:\Recovery\WindowsRE\dwm.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:2292
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Users\Default User\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4572
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Users\Default User\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1404
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2072
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1676
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1944
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3144
  • 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:3028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1928
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 8 /tr "'C:\Program Files\Mozilla Firefox\OfficeClickToRun.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2368
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 13 /tr "'C:\Program Files\Mozilla Firefox\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1792
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:620
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3852
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Program Files\dotnet\host\fxr\6.0.27\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5076
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\dotnet\host\fxr\6.0.27\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3760
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Program Files\dotnet\host\fxr\6.0.27\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3848
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2228
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3380
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4300
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\it-IT\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1376
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 5 /tr "'C:\Windows\Performance\WinSAT\SearchApp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\Performance\WinSAT\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SearchAppS" /sc MINUTE /mo 11 /tr "'C:\Windows\Performance\WinSAT\SearchApp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Recovery\WindowsRE\SearchApp.exe

    Filesize

    2.7MB

    MD5

    b6ebfae09682f1aa59f50572c9ef1873

    SHA1

    2987f617b2452edc65ed1b062765c3dcb47a402b

    SHA256

    040fef7e5bcb99e41668bb43c40d476371d2d41d11ff1ab8a59b319999207ac3

    SHA512

    4ca77ca8812bc950a419e697e6d07d019d9991e9715c39f4b8dc4dd68b5250840367f5721b9cff129329960c825a4a318ddc73b53f4115511ced727ed02b205e

  • C:\Recovery\WindowsRE\dwm.exe

    Filesize

    2.7MB

    MD5

    a4f77b1073e44157d0e5a99795ba7eac

    SHA1

    2f60bba4e80cffbebc5083bcb8528d43a45bc4d0

    SHA256

    8e6cc7284f0fc5cd71a78c4ed910e316dac78cfb6a5ceaf76f3d4bde88c71fc7

    SHA512

    dfd34cca2882e088f8032b251a8ebe151e4685224ae9cfbd5d7e7b9fc288c2574ae857710bf42303db0ff2af789e18a999bfc9cfa80064fcf2608aaa5ced3b9c

  • C:\Recovery\WindowsRE\fontdrvhost.exe

    Filesize

    2.7MB

    MD5

    917db17f1656134023dec1f54a66cfba

    SHA1

    7b060b95b3e9a5d86c7a7452e21c855c32ba3c13

    SHA256

    f516c6f52dece526d88114f3fd79d989dc4d9fd096d880fab7142ef5188ef1fe

    SHA512

    f9edae484f8d59202bb776a93b440a98aab9619f77464675d9d5e1e06d53fedf89c1aa4104b002312fe17081c7248837f2e002f7fe2e2509460a169174562207

  • C:\Windows\Performance\WinSAT\SearchApp.exe

    Filesize

    2.7MB

    MD5

    511b407a74b82903dfbad1ecf9fca8cf

    SHA1

    ddc22dfa4b5c160802b96fd69932a57aeb46c44b

    SHA256

    b0838eb872c90a0840504d71147323eaa0036031974c2aa96a70a98905acff31

    SHA512

    d0b02b5628efec445c4c1b8f57e0181a2b81e4fc91a6481041fdcf0654ec75034dfb2903481f27d9fa58b5cc208cd6e3d82e67763bd38208f58fb7ceb15dbaf4

  • memory/2292-212-0x000000001B1D0000-0x000000001B1E2000-memory.dmp

    Filesize

    72KB

  • memory/2292-211-0x0000000000330000-0x00000000005E4000-memory.dmp

    Filesize

    2.7MB

  • memory/3168-14-0x000000001C4E0000-0x000000001CA08000-memory.dmp

    Filesize

    5.2MB

  • memory/3168-15-0x000000001B9C0000-0x000000001B9C8000-memory.dmp

    Filesize

    32KB

  • memory/3168-9-0x000000001B980000-0x000000001B988000-memory.dmp

    Filesize

    32KB

  • memory/3168-10-0x000000001B9A0000-0x000000001B9AA000-memory.dmp

    Filesize

    40KB

  • memory/3168-7-0x00000000028F0000-0x0000000002900000-memory.dmp

    Filesize

    64KB

  • memory/3168-11-0x000000001BA20000-0x000000001BA76000-memory.dmp

    Filesize

    344KB

  • memory/3168-12-0x000000001B990000-0x000000001B998000-memory.dmp

    Filesize

    32KB

  • memory/3168-13-0x000000001B9B0000-0x000000001B9C2000-memory.dmp

    Filesize

    72KB

  • memory/3168-0-0x00007FFD9D8C3000-0x00007FFD9D8C5000-memory.dmp

    Filesize

    8KB

  • memory/3168-17-0x000000001BBA0000-0x000000001BBAC000-memory.dmp

    Filesize

    48KB

  • memory/3168-16-0x000000001BA90000-0x000000001BA98000-memory.dmp

    Filesize

    32KB

  • memory/3168-8-0x000000001B450000-0x000000001B466000-memory.dmp

    Filesize

    88KB

  • memory/3168-18-0x000000001BAA0000-0x000000001BAAE000-memory.dmp

    Filesize

    56KB

  • memory/3168-19-0x000000001BAB0000-0x000000001BABC000-memory.dmp

    Filesize

    48KB

  • memory/3168-20-0x000000001BAC0000-0x000000001BACA000-memory.dmp

    Filesize

    40KB

  • memory/3168-21-0x000000001BAD0000-0x000000001BADC000-memory.dmp

    Filesize

    48KB

  • memory/3168-6-0x00000000028D0000-0x00000000028D8000-memory.dmp

    Filesize

    32KB

  • memory/3168-5-0x000000001B9D0000-0x000000001BA20000-memory.dmp

    Filesize

    320KB

  • memory/3168-4-0x000000001B430000-0x000000001B44C000-memory.dmp

    Filesize

    112KB

  • memory/3168-3-0x00000000028C0000-0x00000000028CE000-memory.dmp

    Filesize

    56KB

  • memory/3168-210-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

    Filesize

    10.8MB

  • memory/3168-2-0x00007FFD9D8C0000-0x00007FFD9E381000-memory.dmp

    Filesize

    10.8MB

  • memory/3168-1-0x0000000000440000-0x00000000006F4000-memory.dmp

    Filesize

    2.7MB