Analysis
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max time kernel
93s -
max time network
94s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-01-2025 13:22
Behavioral task
behavioral1
Sample
0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe
Resource
win10v2004-20241007-en
General
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Target
0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe
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Size
783KB
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MD5
f1d938f2dc6463685579c83225764940
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SHA1
ddce230b2c30d324736280ec8f3bc2679f0bce11
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SHA256
0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2
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SHA512
8ab6c2fa9672bd2aef8dd1a976ab71043c27f72d76e21ca7a2813ac832383f486decffe332920df5197957021efc21df6706333e11912df3ad81cab8a9d6b792
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SSDEEP
12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:G+OQbpbgsFdAyQvzSqaq8q
Malware Config
Signatures
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Process spawned unexpected child process 6 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 4276 4180 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2948 4180 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1532 4180 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3500 4180 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 3432 4180 schtasks.exe 82 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 908 4180 schtasks.exe 82 -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
resource yara_rule behavioral2/memory/3132-1-0x0000000000400000-0x00000000004CA000-memory.dmp dcrat behavioral2/files/0x0007000000023c99-34.dat dcrat behavioral2/files/0x0008000000023c99-77.dat dcrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
Executes dropped EXE 1 IoCs
pid Process 1596 RuntimeBroker.exe -
Adds Run key to start application 2 TTPs 6 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\unsecapp = "\"C:\\Windows\\System32\\wbem\\NetPeerDistCim\\unsecapp.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "\"C:\\PerfLogs\\RuntimeBroker.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TextInputHost = "\"C:\\Windows\\SystemApps\\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\\InputApp\\InputApp\\TextInputHost.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Recovery\\WindowsRE\\OfficeClickToRun.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wininit = "\"C:\\PerfLogs\\wininit.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OfficeClickToRun = "\"C:\\Program Files\\Common Files\\microsoft shared\\ClickToRun\\AppVManifest\\OfficeClickToRun.exe\"" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RuntimeBroker.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\wbem\NetPeerDistCim\unsecapp.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File created C:\Windows\System32\wbem\NetPeerDistCim\unsecapp.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File created C:\Windows\System32\wbem\NetPeerDistCim\29c1c3cc0f76855c7e7456076a4ffc27e4947119 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File opened for modification C:\Windows\System32\wbem\NetPeerDistCim\RCX9E78.tmp 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
Drops file in Program Files directory 4 IoCs
description ioc Process File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest\OfficeClickToRun.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest\e6c9b481da804f07baff8eff543b0a1441069b5d 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest\RCX9BF7.tmp 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest\OfficeClickToRun.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File created C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\TextInputHost.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File created C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\22eafd247d37c30fed3795ee41d259ec72bb351c 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File opened for modification C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\RCX9491.tmp 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe File opened for modification C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\TextInputHost.exe 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4276 schtasks.exe 2948 schtasks.exe 1532 schtasks.exe 3500 schtasks.exe 3432 schtasks.exe 908 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe 1596 RuntimeBroker.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Token: SeDebugPrivilege 1596 RuntimeBroker.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3132 wrote to memory of 1448 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 89 PID 3132 wrote to memory of 1448 3132 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe 89 PID 1448 wrote to memory of 2648 1448 cmd.exe 91 PID 1448 wrote to memory of 2648 1448 cmd.exe 91 PID 1448 wrote to memory of 1596 1448 cmd.exe 95 PID 1448 wrote to memory of 1596 1448 cmd.exe 95 -
System policy modification 1 TTPs 6 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" 0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" RuntimeBroker.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0" RuntimeBroker.exe -
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\0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe"C:\Users\Admin\AppData\Local\Temp\0243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2N.exe"1⤵
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- 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:3132 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\upQz82zIPb.bat"2⤵
- Suspicious use of WriteProcessMemory
PID:1448 -
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵PID:2648
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C:\PerfLogs\RuntimeBroker.exe"C:\PerfLogs\RuntimeBroker.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:1596
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\PerfLogs\RuntimeBroker.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:4276
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\InputApp\TextInputHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2948
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1532
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\PerfLogs\wininit.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3500
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest\OfficeClickToRun.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3432
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Windows\System32\wbem\NetPeerDistCim\unsecapp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:908
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
783KB
MD5f1d938f2dc6463685579c83225764940
SHA1ddce230b2c30d324736280ec8f3bc2679f0bce11
SHA2560243e305392e0655c274aae35aa30df5dcbd79c245247fc9da69a8293d3d60a2
SHA5128ab6c2fa9672bd2aef8dd1a976ab71043c27f72d76e21ca7a2813ac832383f486decffe332920df5197957021efc21df6706333e11912df3ad81cab8a9d6b792
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Filesize
193B
MD52176e6838e3dac4f4af96339968b0b65
SHA1fd57371233fbbded1b042a2d1d503024873395ce
SHA256fe742905ed9096e780ec1ae229c48d3eff58bd65739340fd8806e9ba327b076b
SHA512415cdd9dcd99f7ed145c867ff811d6a8298df256c12d69b357bf499e6326cd3336ef58be47050c8a55d45f6790ffc07dd2cc750e22f5c716aa62a234d841e8c5
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Filesize
783KB
MD5420a227a688743031f9880c1d767fa86
SHA1f4802f0ee27b84f0f4f2d5b11885e81ca5a6b8b4
SHA25619fde28df57b800bf24052674e43f780b3eaa7a901d5cce2f59fd89d0b621ae1
SHA512760869e902daadc8df55612f0908f51dc81dd3200bcbe5bc9a11b52a2c91e6f783812f0d0f01d062a04f9385f799d568e7ef4170c6651a50cd2c3be61f75eee5