Analysis
-
max time kernel
136s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
-
submitted
06/11/2023, 02:31
General
-
Target
NEAS.b1d8052ed41a27fe08f3d2fff46b5490.exe
-
Size
783KB
-
MD5
b1d8052ed41a27fe08f3d2fff46b5490
-
SHA1
4b7e84c556fcf4ff2c5bdae48f73f084a7a8fe73
-
SHA256
62960dadc5119f2ad64919d0fa3c6d5b6bfc930f0bf171917dbb8cba03938431
-
SHA512
4b140ced04e60e998738d30a49666599e6720d39fbb3bd24c8414e0d632418c307f7447a7a3d808a5440eb5f992d8c7631e5c629462336a660888b15a22b0147
-
SSDEEP
12288:mqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:m+OQbpbgsFdAyQvzSqaq8q
Malware Config
Signatures
-
DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
-
Process spawned unexpected child process 8 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
-
UAC bypass 3 TTPs 6 IoCs
-
DCRat payload 4 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 8 IoCs
-
Checks whether UAC is enabled 1 TTPs 4 IoCs
-
Drops file in System32 directory 16 IoCs
-
Drops file in Program Files directory 4 IoCs
-
Drops file in Windows directory 8 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Creates scheduled task(s) 1 TTPs 8 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Modifies registry class 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 30 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
-
C:\Users\Admin\AppData\Local\Temp\NEAS.b1d8052ed41a27fe08f3d2fff46b5490.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.b1d8052ed41a27fe08f3d2fff46b5490.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
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\RBw34MHLBy.bat"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵
-
-
C:\Windows\System32\NotificationControllerPS\SppExtComObj.exe"C:\Windows\System32\NotificationControllerPS\SppExtComObj.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
-
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\resources\SearchApp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\NotificationControllerPS\SppExtComObj.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApi.CppWinrt\SearchApp.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Windows\System32\SysFxUI\MusNotification.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\System32\IHDS\backgroundTaskHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Java\jre-1.8\lib\security\smss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\System32\dnscmmc\taskhostw.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\PerfLogs\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
225B
MD54b283d1d3cf6a76a12e45c4a61f8acd1
SHA164df859a6a43f585c25eef6c05ec27fd2b978fa6
SHA2562322bf61242976acaf36f7d10629fa8c90800bbab88d290402ca6a4d3ddaf284
SHA512272801aca0b9227e65fb10c798fe923c74812d4d1909c07359689f6bd4cde51a22daf4e8d21de407578f0b83799aa6ddcde3c09bd770de4d5db6acc2bf9c8fc0
-
Filesize
783KB
MD5b1d8052ed41a27fe08f3d2fff46b5490
SHA14b7e84c556fcf4ff2c5bdae48f73f084a7a8fe73
SHA25662960dadc5119f2ad64919d0fa3c6d5b6bfc930f0bf171917dbb8cba03938431
SHA5124b140ced04e60e998738d30a49666599e6720d39fbb3bd24c8414e0d632418c307f7447a7a3d808a5440eb5f992d8c7631e5c629462336a660888b15a22b0147
-
Filesize
783KB
MD5b1d8052ed41a27fe08f3d2fff46b5490
SHA14b7e84c556fcf4ff2c5bdae48f73f084a7a8fe73
SHA25662960dadc5119f2ad64919d0fa3c6d5b6bfc930f0bf171917dbb8cba03938431
SHA5124b140ced04e60e998738d30a49666599e6720d39fbb3bd24c8414e0d632418c307f7447a7a3d808a5440eb5f992d8c7631e5c629462336a660888b15a22b0147
-
Filesize
783KB
MD5b1d8052ed41a27fe08f3d2fff46b5490
SHA14b7e84c556fcf4ff2c5bdae48f73f084a7a8fe73
SHA25662960dadc5119f2ad64919d0fa3c6d5b6bfc930f0bf171917dbb8cba03938431
SHA5124b140ced04e60e998738d30a49666599e6720d39fbb3bd24c8414e0d632418c307f7447a7a3d808a5440eb5f992d8c7631e5c629462336a660888b15a22b0147
-
Filesize
32KB
-
Filesize
64KB
-
Filesize
32KB
-
Filesize
48KB
-
Filesize
40KB
-
Filesize
40KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
64KB
-
Filesize
32KB
-
Filesize
64KB
-
Filesize
48KB
-
Filesize
10.8MB
-
Filesize
808KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
32KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
1024KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
1024KB
-
Filesize
1024KB
-
Filesize
32KB
-
Filesize
10.8MB
-
Filesize
64KB
-
Filesize
10.8MB
-
Filesize
10.8MB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
64KB
-
Filesize
10.8MB