Analysis
- max time kernel
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
27/09/2026, 03:51
Static task
static1
Behavioral task
behavioral1
Sample
2fb35c4ae7f69057974364351375bfb9.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
2fb35c4ae7f69057974364351375bfb9.exe
Resource
win11ltsc2024-20260911-en
General
- Target 2fb35c4ae7f69057974364351375bfb9.exe
- Size 750KB
- Sample260927-eelw4ayble
- SHA256 fab9726534078808667e3e330bf24152919f74893067ec8cc40f21b0d025fbb8
- MD5 2fb35c4ae7f69057974364351375bfb9
- SHA1 a06345f53795736da97151d45fee3cb402f61ec0
- SHA512 cfe55d90b259c9f54841c7cef04a75c225f15ea91bb27f0b1c4c4164a63a5ea6c82b196f41cd172c25b8a0c953cec47a39cb34a7fcabecb8b018487c37be0364
- SSDEEP 12288:hpoIY///1UFyp4JfHkKR4amAY/ehKTXERL3L4/8pUs5QcEtov6N:kIY//yJDSamL7TX+Lm83+W
- TLSH T11BF423235C9E54F3ED9844FB3C5A1B763B6E02C92E442FB6497C7C491B919B238709AC
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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resource yara_rule behavioral2/files/0x001000000001b30b-13.dat dcrat behavioral2/files/0x000e00000001c52c-30.dat dcrat behavioral2/memory/1220-32-0x0000000000480000-0x0000000000576000-memory.dmp dcrat - Process spawned unexpected child process 15 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3732 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4340 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1216 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 5588 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4924 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 248 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 5316 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 6116 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1748 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1268 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 5404 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4796 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2832 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1996 3004 schtasks.exe 96 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3200 3004 schtasks.exe 96 - Disables Task Manager via registry modification
- Executes a file named after a Windows system binary 1 TTPs 1 IoCs
The file runs from a user directory while carrying the name of an executable that normally only exists in System32.
description ioc Process File opened (read-only) C:\Users\Admin\Desktop\RuntimeBroker.exe RuntimeBroker.exe - Executes dropped EXE 8 IoCs
pid Process 3348 builds_store.json.cmd 1220 driverPerf.exe 4100 WUDFHost.exe 5100 sihost.exe 1140 RuntimeBroker.exe 4948 driverPerf.exe 3124 RuntimeBroker.exe 720 driverPerf.exe - Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
pid Process 1240 WScript.exe - Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\9e8d7a4ca61bd9 driverPerf.exe File created C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe driverPerf.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 4896 cmd.exe 5776 cmd.exe - Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname driverPerf.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain driverPerf.exe - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language builds_store.json.cmd Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WScript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe - Modifies registry class 4 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000_Classes\Local Settings OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000_Classes\Local Settings builds_store.json.cmd Key created \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000_Classes\Local Settings driverPerf.exe Key created \REGISTRY\USER\S-1-5-21-2714045687-1127350534-2056456672-1000_Classes\Local Settings 2fb35c4ae7f69057974364351375bfb9.exe - Modifies registry key 1 TTPs 1 IoCs
pid Process 1468 reg.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 15 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5316 schtasks.exe 6116 schtasks.exe 1996 schtasks.exe 3732 schtasks.exe 1216 schtasks.exe 1748 schtasks.exe 4796 schtasks.exe 3200 schtasks.exe 2832 schtasks.exe 5588 schtasks.exe 1268 schtasks.exe 5404 schtasks.exe 4340 schtasks.exe 4924 schtasks.exe 248 schtasks.exe - Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe 1220 driverPerf.exe - Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 1220 driverPerf.exe Token: SeDebugPrivilege 4100 WUDFHost.exe Token: SeDebugPrivilege 5100 sihost.exe Token: SeDebugPrivilege 4948 driverPerf.exe Token: SeDebugPrivilege 1140 RuntimeBroker.exe Token: SeDebugPrivilege 3124 RuntimeBroker.exe Token: SeDebugPrivilege 720 driverPerf.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3820 OpenWith.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 5564 wrote to memory of 3348 5564 2fb35c4ae7f69057974364351375bfb9.exe 91 PID 3348 wrote to memory of 1240 3348 builds_store.json.cmd 92 PID 1240 wrote to memory of 4896 1240 WScript.exe 93 PID 4896 wrote to memory of 1220 4896 cmd.exe 95 PID 1220 wrote to memory of 5776 1220 driverPerf.exe 116 PID 4896 wrote to memory of 1468 4896 cmd.exe 118 PID 5776 wrote to memory of 2776 5776 cmd.exe 119 PID 5776 wrote to memory of 720 5776 cmd.exe 127 - 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
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C:\Users\Admin\AppData\Local\Temp\2fb35c4ae7f69057974364351375bfb9.exe"C:\Users\Admin\AppData\Local\Temp\2fb35c4ae7f69057974364351375bfb9.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5564 -
C:\Users\Admin\AppData\Local\Temp\builds_store.json.cmd"C:\Users\Admin\AppData\Local\Temp\builds_store.json.cmd"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3348 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\fontwin\XfnlBm.vbe"3⤵
- Executes a VBScript file via the Windows Script Host.
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1240 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\fontwin\pWv5P.bat" "4⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896 -
C:\Users\Admin\AppData\Roaming\fontwin\driverPerf.exe"C:\Users\Admin\AppData\Roaming\fontwin\driverPerf.exe"5⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Reads the TCP/IP host and domain name from the registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\pQuxQFPn08.bat"6⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:5776 -
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:27⤵PID:2776
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C:\Recovery\WindowsRE\driverPerf.exe"C:\Recovery\WindowsRE\driverPerf.exe"7⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:720
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C:\Windows\SysWOW64\reg.exereg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f5⤵
- System Location Discovery: System Language Discovery
- Modifies registry key
PID:1468
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:3820
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\WUDFHost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3732
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\Users\All Users\WUDFHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4340
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\WUDFHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1216
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sihosts" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5588
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4924
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sihosts" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:248
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5316
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:6116
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1748
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "driverPerfd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\driverPerf.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1268
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "driverPerf" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\driverPerf.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:5404
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "driverPerfd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\driverPerf.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4796
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Desktop\RuntimeBroker.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2832
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Admin\Desktop\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1996
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C:\Users\All Users\WUDFHost.exe"C:\Users\All Users\WUDFHost.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4100
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Users\Admin\Desktop\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3200
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C:\Recovery\WindowsRE\sihost.exe"C:\Recovery\WindowsRE\sihost.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5100
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C:\Users\Admin\Desktop\RuntimeBroker.exe"C:\Users\Admin\Desktop\RuntimeBroker.exe"1⤵
- Executes a file named after a Windows system binary
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1140
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C:\Recovery\WindowsRE\driverPerf.exe"C:\Recovery\WindowsRE\driverPerf.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4948
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C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe"C:\Program Files\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\RuntimeBroker.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3124
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Masquerading
1Match Legitimate Name or Location
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\builds_store.json.cmd
- Size 1.2MB
- SHA256 3292329c64143a3021cd35cbdd57ab9b1eaf0a36113deae7cd0c0a4731be76ca
- MD5 70f951d8d3d4538db88ad11d6a2727c7
- SHA1 62f0bd0f65e880062928797d6eed6ff9efc48636
- SHA512 41d7ed6d8cfe4d7d612f260d5425f8004ea19ff05bc61f4acbfc36274703f2fea19c63173f7e00959a15403fd93c46aa71e6e655e684a6430eb951da7aa747b9
- SSDEEP 24576:U2G/nvxW3Ww0tXSDwwwp6HKya3iX/tA/UhXZDXOEDs:UbA30CDwAKFAFASXOEg
- TLSH T1DE556A027F44DA21F0191233C2FF490447B4AC50AAA6E72B7EB9376E55223977C5DACB
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\pQuxQFPn08.bat
- Size 201B
- SHA256 fdcf50e4292f091f5418e2744d82830a19b44e842b9c8134412a3cc296772f7f
- MD5 a28753f26dbcd94e69a3b7dfbbc8af87
- SHA1 2ff0a264837ef8dd6d9594beb85a86d78fb364b4
- SHA512 af67ace081411f8aa5d645e6baee225ef9250a8e71c63f8118a9bd4b1c8d4905e4fa7f8c126f79c3d73d9be0030d21b6344d8efa5b94454695eb32c11229e956
- TLSH T12ED022439002CE5A48A24913884F168CB22728ABF6C575600BA604A46A8B4BFB1AA5C1
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\start_web_rat.py
- Size 80KB
- SHA256 15f38b73a349a20e8b1082795258554c28df505b5bc8285d9ec2e0e1b59f8e43
- MD5 406f5ef92320e4d2020ba42fca852946
- SHA1 24b2373a30ab73392c176398a99a7fb6f72b1f58
- SHA512 ac617947ef4f6d139c8fef6d111cc0e57b379b69f690208cf4790ab9ebfb7cf8b1019681d2b185bc6ef95a2de14201bdb7aeec0931d4056d411de99bbc42875c
- SSDEEP 1536:5h+t5GeD8uCKeyn+uZeMT0oXczWXKMIlF9:58kX/yIlF9
- TLSH T1D183E632AC16292342F3C60D9C66DA47F71A4313152115577EAC93AC2FB9D2A86F1EFC
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Roaming\fontwin\XfnlBm.vbe
- Size 196B
- SHA256 b06bedcf846a9d231e329014e0aa4fd38800666977270a99aaebe8c419ce5f2f
- MD5 3853e56f7a2d261c7abef31ed9d67b89
- SHA1 e0f14bc6031f1dc530e108e09aa067ccb06270d0
- SHA512 cc94f65872c6bd4fd11c7d3f23477044b9126f878002a5e84e1419d3e4cda10a33388573f893b556156f2a24027e3187f38e32c60a151d8fc6316198d0f611f1
- TLSH T191D02388515FB3948D184886D384C42C5D95EF5487404695845C9541200457B3C1C355
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Roaming\fontwin\driverPerf.exe
- Size 952KB
- SHA256 bdc36e540db68e53969b5d277acce0464ffcaa3e2bf3e9bc96d1f54573c085ae
- MD5 5943e3387fcf59fb8dfde219b9b1a316
- SHA1 4341e082d681c6b1140ad30d34040c5e6c8ab15b
- SHA512 8291a5f3990c83c25f038782c4754bd083bbf8f4f0bc39287eb46bf76fb9a846c491c7ae5c633f7943b00db1b17eae80df536661dd75b82a5889c8c817d27262
- SSDEEP 12288:YSQiwwwpQY2HKyaLrVst17blHA+YjUhzoIFZDtws5Q2Er+v0G:YSDwwwp6HKya3iX/tA/UhXZDXOED
- TLSH T1FF2507027F489E11F0091233C2EF494847B49D51AAA6E72B7DBA376E15123AB7C4D9CF
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Roaming\fontwin\pWv5P.bat
- Size 146B
- SHA256 928fcfe2245e4cc3b2556d8cf50871e35d8ab36bcaea69382a5add7546494148
- MD5 97eea595ee9aab410c0274c9fa06189b
- SHA1 722f5bfcc5f6b232473cd50dbb05c472462e9682
- SHA512 78f94fffafe71f8641ee1289b2e8b9f749b094eade2dffd0c517573cf0c9bc8846d6606db38b70bd819f2bc4ee40268033911edff7d591467798bd8703bc4c92
- TLSH T184C08C30201698A2E5A0AA24288FAD02972B124B6050A2540D9A102F814A48DC17C6C2
- MD5 SHA1 SHA512 TLSH