Analysis
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max time kernel
93s -
max time network
97s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
21-11-2024 03:46
General
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Target
8bc4ca0ef9348f4a331f850af113f2134c0aba41f6a1e9dd26f9b34db34b473b.exe
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Size
2.0MB
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MD5
0707542d6d884c5c595b38ebedd025c9
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SHA1
686f867f37c8aca23ea3cc298dec856667c1afcd
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SHA256
8bc4ca0ef9348f4a331f850af113f2134c0aba41f6a1e9dd26f9b34db34b473b
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SHA512
945eeeadb00c19934d034cfb9bd158246e2fcb989bb8808ce3fffee7707cc4ae1f83310db961ecfbd0bc99304b8c041ec7e4ee83893d1db7eac54910970cccc0
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SSDEEP
49152:fA6rKdfybQlb8Em0lP/PHNQsGE6+tlcwDXbuvDtkI:XrKngUlPtQsG831burKI
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 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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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 3 IoCs
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Drops file in System32 directory 7 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 2 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\8bc4ca0ef9348f4a331f850af113f2134c0aba41f6a1e9dd26f9b34db34b473b.exe"C:\Users\Admin\AppData\Local\Temp\8bc4ca0ef9348f4a331f850af113f2134c0aba41f6a1e9dd26f9b34db34b473b.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\msg\spoolsv.exe"C:\Windows\System32\msg\spoolsv.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\SIHClient\lsass.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 "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\msg\spoolsv.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 "unsecapp" /sc ONLOGON /tr "'C:\Windows\System32\wbem\MDMAppProv\unsecapp.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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.0MB
MD50707542d6d884c5c595b38ebedd025c9
SHA1686f867f37c8aca23ea3cc298dec856667c1afcd
SHA2568bc4ca0ef9348f4a331f850af113f2134c0aba41f6a1e9dd26f9b34db34b473b
SHA512945eeeadb00c19934d034cfb9bd158246e2fcb989bb8808ce3fffee7707cc4ae1f83310db961ecfbd0bc99304b8c041ec7e4ee83893d1db7eac54910970cccc0
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Filesize
8KB
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Filesize
2.1MB
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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
48KB
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Filesize
32KB
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Filesize
344KB
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Filesize
32KB
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Filesize
40KB
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Filesize
32KB