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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
28/10/2024, 08:18
General
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Target
ab18a7676dc9644e7ed41a2bc3ff1951da21d9a246493296d984b7aea82625e2N.exe
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Size
783KB
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MD5
665d25b23b263b2654de48bfefeb68e0
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SHA1
fbe169375d8b8d4864cf924495f9c3559d0e86bf
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SHA256
ab18a7676dc9644e7ed41a2bc3ff1951da21d9a246493296d984b7aea82625e2
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SHA512
1b3688f94a1e390b411b3224c1681d2cfdb63a7cf3277b8cb168a29c59c8af017526938a36b06b481dcf9317befef5d9e16a3c2aa9f572ce5189c04e89a718c2
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SSDEEP
12288:mqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:m+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 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 6 IoCs
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DCRat payload 2 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 5 IoCs
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Checks whether UAC is enabled 1 TTPs 4 IoCs
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Drops file in System32 directory 4 IoCs
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Drops file in Program Files directory 4 IoCs
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Drops file in Windows directory 4 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
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Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 18 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 6 IoCs
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System policy modification 1 TTPs 6 IoCs
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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\ab18a7676dc9644e7ed41a2bc3ff1951da21d9a246493296d984b7aea82625e2N.exe"C:\Users\Admin\AppData\Local\Temp\ab18a7676dc9644e7ed41a2bc3ff1951da21d9a246493296d984b7aea82625e2N.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
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\6R8AUo6VDp.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵
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C:\Program Files\Windows NT\StartMenuExperienceHost.exe"C:\Program Files\Windows NT\StartMenuExperienceHost.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\System32\runonce\backgroundTaskHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\PerfLogs\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Program Files\Windows NT\StartMenuExperienceHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp\SearchApp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Default\Pictures\Idle.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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
219B
MD58f591d0e10062694a7d18ad16f6433e7
SHA1d3c60794d7958575ed538a93dc46f1f18fd4b4e5
SHA256b1118e6393010620be8ef5941f4f338053985e507716b3df2b956f82f77eebd5
SHA512f1c42f8841c132794bd98c8700439597af045f09ab5d9125f02fc4f882d718898959258eae7a55dfe8504f5de9e672a250aa98ae63ab0f08b320d89f01ba3a8d
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Filesize
783KB
MD5665d25b23b263b2654de48bfefeb68e0
SHA1fbe169375d8b8d4864cf924495f9c3559d0e86bf
SHA256ab18a7676dc9644e7ed41a2bc3ff1951da21d9a246493296d984b7aea82625e2
SHA5121b3688f94a1e390b411b3224c1681d2cfdb63a7cf3277b8cb168a29c59c8af017526938a36b06b481dcf9317befef5d9e16a3c2aa9f572ce5189c04e89a718c2
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Filesize
32KB
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Filesize
10.8MB
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Filesize
32KB
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Filesize
64KB
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Filesize
48KB
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Filesize
40KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
8KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
32KB
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Filesize
40KB
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Filesize
32KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
48KB
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Filesize
808KB
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Filesize
10.8MB