Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-02-2025 23:00

General

  • Target

    5fd4c916b038c2c30467f8ce764ac0f9.exe

  • Size

    2.7MB

  • MD5

    5fd4c916b038c2c30467f8ce764ac0f9

  • SHA1

    54f538892c45415b55252ca441ce9f316a8cf8c0

  • SHA256

    4d460e49e0c569a7593cd7fd6e3a181b2e25dd7b98bd2906015007bd241b4d86

  • SHA512

    d8ed5e135ea795491db6e66112699d5c21f386025fee0645060a4c5cee8b4f0f4115cc254189a11686741e7601ec6a6f12e6bba45bc410d9f91334d61d37594d

  • SSDEEP

    49152:3jgByCva+AtOYESlRp3bBKelCRxlOiOYl74sYe4IDhUdK7oIgSOrREmUGs:4q0SlRBdJ2xQO7t4IDhF7oInixU

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 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Downloads MZ/PE file 1 IoCs
  • 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 30 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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 21 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\5fd4c916b038c2c30467f8ce764ac0f9.exe
    "C:\Users\Admin\AppData\Local\Temp\5fd4c916b038c2c30467f8ce764ac0f9.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:4188
    • C:\Program Files (x86)\Windows NT\Accessories\en-US\unsecapp.exe
      "C:\Program Files (x86)\Windows NT\Accessories\en-US\unsecapp.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:4404
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Mail\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4360
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Windows Mail\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1112
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Mail\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2336
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\unsecapp.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3568
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3096
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows NT\Accessories\en-US\unsecapp.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Internet Explorer\images\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2988
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Internet Explorer\images\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Program Files\Internet Explorer\images\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Windows\InputMethod\SHARED\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3468
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\InputMethod\SHARED\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Windows\InputMethod\SHARED\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3348
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files\Windows NT\TableTextService\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4444
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4132
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows NT\TableTextService\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:940
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 8 /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:640
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3832
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4368
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Media Player\de-DE\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2532
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\de-DE\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Media Player\de-DE\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4168
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files\WindowsPowerShell\Configuration\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4032
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Configuration\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1496
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Program Files\WindowsPowerShell\Configuration\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4408
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4788
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDcxNzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTY4MDM3MTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDQzNTY5NDEyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\Windows NT\Accessories\en-US\RCXC837.tmp

    Filesize

    2.7MB

    MD5

    5543dd69161c27363e1aeadb9f38a65e

    SHA1

    fe66118cbc4e61a64e7f5d5def1f6bb65f5f15e8

    SHA256

    eba45052693f93c87849c178c2aea9a3290616d3ace3a6d42d0bb90658235250

    SHA512

    222361d4de33db979d1e8c3f53699085a12a1ecdf5bbd2803a021b2d363b85b33d4d4f5f87403b2a4312eaa01b124ca7b1393c6b48f8e26266467711a507c5d7

  • C:\Program Files\Windows NT\TableTextService\wininit.exe

    Filesize

    2.7MB

    MD5

    5fd4c916b038c2c30467f8ce764ac0f9

    SHA1

    54f538892c45415b55252ca441ce9f316a8cf8c0

    SHA256

    4d460e49e0c569a7593cd7fd6e3a181b2e25dd7b98bd2906015007bd241b4d86

    SHA512

    d8ed5e135ea795491db6e66112699d5c21f386025fee0645060a4c5cee8b4f0f4115cc254189a11686741e7601ec6a6f12e6bba45bc410d9f91334d61d37594d

  • C:\Program Files\WindowsPowerShell\Configuration\explorer.exe

    Filesize

    2.7MB

    MD5

    173c1ceb60de0412b868ef004ad933b6

    SHA1

    6c11d5eca89f73f4679df00ab7656444734b4fac

    SHA256

    0e81fa322a0f1699c39d682034652bac5183afbb56f1d1c63d5f31922f1c3513

    SHA512

    506c9aa3e87a64a84fde1202d7ed4d7422c3257a91ea167beb8aeb7b5c01f60c378ed7cca289c23df0c6987355b50cb5200afdc665a88d6d18edd2e59a675f48

  • C:\Users\Default\backgroundTaskHost.exe

    Filesize

    2.7MB

    MD5

    d40d56ac2a3c845278607ac35bdc9ef0

    SHA1

    a744f30281678dbcd0e0ceeb7f1d28f91a41f7da

    SHA256

    49387b7b2a80b19e5b8666148ed0818a58c4461f75e9a45cf75a86d2dbcfe068

    SHA512

    7867648de34006263a0c8aa750934109065e080f70196f58091b4ded1e144e4743984ce61b6aca3440dcfdcd7024220ec7647b94198a63d02761ff049ac879f0

  • memory/4188-14-0x000000001BE50000-0x000000001C378000-memory.dmp

    Filesize

    5.2MB

  • memory/4188-18-0x000000001B950000-0x000000001B95E000-memory.dmp

    Filesize

    56KB

  • memory/4188-7-0x0000000002740000-0x0000000002750000-memory.dmp

    Filesize

    64KB

  • memory/4188-6-0x0000000000D80000-0x0000000000D88000-memory.dmp

    Filesize

    32KB

  • memory/4188-8-0x000000001B810000-0x000000001B826000-memory.dmp

    Filesize

    88KB

  • memory/4188-9-0x000000001B180000-0x000000001B188000-memory.dmp

    Filesize

    32KB

  • memory/4188-10-0x000000001B850000-0x000000001B85A000-memory.dmp

    Filesize

    40KB

  • memory/4188-11-0x000000001B8B0000-0x000000001B906000-memory.dmp

    Filesize

    344KB

  • memory/4188-12-0x000000001B830000-0x000000001B838000-memory.dmp

    Filesize

    32KB

  • memory/4188-13-0x000000001B840000-0x000000001B852000-memory.dmp

    Filesize

    72KB

  • memory/4188-0-0x00007FFF404A3000-0x00007FFF404A5000-memory.dmp

    Filesize

    8KB

  • memory/4188-17-0x000000001B940000-0x000000001B94C000-memory.dmp

    Filesize

    48KB

  • memory/4188-19-0x000000001B960000-0x000000001B96C000-memory.dmp

    Filesize

    48KB

  • memory/4188-5-0x000000001B860000-0x000000001B8B0000-memory.dmp

    Filesize

    320KB

  • memory/4188-16-0x000000001B930000-0x000000001B938000-memory.dmp

    Filesize

    32KB

  • memory/4188-20-0x000000001B970000-0x000000001B97A000-memory.dmp

    Filesize

    40KB

  • memory/4188-15-0x000000001B920000-0x000000001B928000-memory.dmp

    Filesize

    32KB

  • memory/4188-21-0x000000001B980000-0x000000001B98C000-memory.dmp

    Filesize

    48KB

  • memory/4188-4-0x000000001B7F0000-0x000000001B80C000-memory.dmp

    Filesize

    112KB

  • memory/4188-3-0x0000000000D70000-0x0000000000D7E000-memory.dmp

    Filesize

    56KB

  • memory/4188-2-0x00007FFF404A0000-0x00007FFF40F61000-memory.dmp

    Filesize

    10.8MB

  • memory/4188-124-0x00007FFF404A3000-0x00007FFF404A5000-memory.dmp

    Filesize

    8KB

  • memory/4188-1-0x00000000002F0000-0x00000000005A4000-memory.dmp

    Filesize

    2.7MB

  • memory/4188-148-0x00007FFF404A0000-0x00007FFF40F61000-memory.dmp

    Filesize

    10.8MB

  • memory/4188-209-0x00007FFF404A0000-0x00007FFF40F61000-memory.dmp

    Filesize

    10.8MB

  • memory/4404-210-0x000000001BF20000-0x000000001BF32000-memory.dmp

    Filesize

    72KB