Analysis
- max time kernel
141s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
01/06/2024, 00:46
General
- Target 86d014b6c68a6eb6e5920be0dd328930NeikiAnalytics.exe
- Size 952KB
- Sample240601-a45naacd48
- SHA256 2cc23ed7e6c654cda7131a13da2f6f9c07fa29f3bcfb416769c204d29e5f17ee
Malware Config
Signatures
- DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
- Modifies WinLogon for persistence 2 TTPs 5 IoCs
- Process spawned unexpected child process 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- UAC bypass 3 TTPs 6 IoCs
- DCRat payload 2 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
- Adds Run key to start application 2 TTPs 10 IoCs
- Checks whether UAC is enabled 1 TTPs 4 IoCs
- Drops file in System32 directory 10 IoCs
- Drops file in Program Files directory 10 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 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
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C:\Users\Admin\AppData\Local\Temp\86d014b6c68a6eb6e5920be0dd328930NeikiAnalytics.exe"C:\Users\Admin\AppData\Local\Temp\86d014b6c68a6eb6e5920be0dd328930NeikiAnalytics.exe"1⤵
- Modifies WinLogon for persistence
- 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
- 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\S66OT57YSb.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:\Windows\System32\dmcfgutils\spoolsv.exe"C:\Windows\System32\dmcfgutils\spoolsv.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\dmcfgutils\spoolsv.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Windows\System32\wbem\polstore\unsecapp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\dllhost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\Edge\Application\pwahelper\msedge.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Documents and Settings\services.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Replay Monitor
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Downloads
S66OT57YSb.bat
services.exe
memory/5012-6-0x0000000002C80000-0x0000000002C8C000-memory.dmp
memory/5012-3-0x0000000002C30000-0x0000000002C40000-memory.dmp
memory/5012-4-0x0000000002C40000-0x0000000002C50000-memory.dmp
memory/5012-5-0x0000000002C50000-0x0000000002C5A000-memory.dmp
memory/5012-0-0x00007FFD84573000-0x00007FFD84575000-memory.dmp
memory/5012-7-0x0000000002C70000-0x0000000002C7A000-memory.dmp
memory/5012-8-0x0000000002CA0000-0x0000000002CA8000-memory.dmp
memory/5012-10-0x0000000002CD0000-0x0000000002CDC000-memory.dmp
memory/5012-9-0x0000000002CB0000-0x0000000002CBA000-memory.dmp
memory/5012-11-0x0000000002CE0000-0x0000000002CEC000-memory.dmp
memory/5012-2-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/5012-93-0x00007FFD84570000-0x00007FFD85031000-memory.dmp
memory/5012-1-0x0000000000AE0000-0x0000000000BD4000-memory.dmp