Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
15-01-2025 07:31
General
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Target
bff0c8f8a2a52c5e513e11004bf1216b50437e15bd21e388915a50438ceb5e60.exe
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Size
783KB
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MD5
28560c7a4324489a3e885ea4cdd456b4
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SHA1
d1cd68c4d65ee23cb7dc39d6e88362c88d3d6fa4
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SHA256
bff0c8f8a2a52c5e513e11004bf1216b50437e15bd21e388915a50438ceb5e60
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SHA512
fe0cde74e2c8b6187e152c144311c431ec54edf9f5e73d43b18c362a6478c8ee250ab745206d909832f2a697b0d5ff92953149592f93070249eb705a65314b1a
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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 4 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 4 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Executes dropped EXE 1 IoCs
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Adds Run key to start application 2 TTPs 4 IoCs
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Checks whether UAC is enabled 1 TTPs 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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Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 9 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\bff0c8f8a2a52c5e513e11004bf1216b50437e15bd21e388915a50438ceb5e60.exe"C:\Users\Admin\AppData\Local\Temp\bff0c8f8a2a52c5e513e11004bf1216b50437e15bd21e388915a50438ceb5e60.exe"1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- 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\F2c775n5GE.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\bootstat\explorer.exe"C:\Windows\bootstat\explorer.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 "explorer" /sc ONLOGON /tr "'C:\Windows\bootstat\explorer.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 "lsm" /sc ONLOGON /tr "'C:\Documents and Settings\lsm.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 "sppsvc" /sc ONLOGON /tr "'C:\ProgramData\Application Data\sppsvc.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:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\spoolsv.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
196B
MD5b4478f26e8ce94649ed2f0d5995d221f
SHA1673cceeed381c46ff3df0ea420b101e737b93309
SHA2565494716c0684f4199ff4c7312561a00cc224ab37817a17029564417fbaa508d6
SHA5127b4a7392b85f50254b28193a0248f071459a0dd798a868675349e9a1fd6249e334b751509439aca937f6930fd585317b3fbd9316a51cbd8f735c2cb7e13970e4
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Filesize
783KB
MD528560c7a4324489a3e885ea4cdd456b4
SHA1d1cd68c4d65ee23cb7dc39d6e88362c88d3d6fa4
SHA256bff0c8f8a2a52c5e513e11004bf1216b50437e15bd21e388915a50438ceb5e60
SHA512fe0cde74e2c8b6187e152c144311c431ec54edf9f5e73d43b18c362a6478c8ee250ab745206d909832f2a697b0d5ff92953149592f93070249eb705a65314b1a
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Filesize
783KB
MD57c6a419ed6889f8fef150472e1cf45c2
SHA131c594a8149d7300750b24bd14231a6f3088a597
SHA256409182ce820f602816b45e56bc3b31e2029661e4e1c2b97a82c22b5e071b0063
SHA5123507b200d291f12c8cd8c2a73685c0162a12d74b5db1575d3e86c39afa61ffdabc39571ce489d99d98b320c5778ce9a6d9968a9edc1efdb2735a4c3a68c8d918
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Filesize
32KB
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Filesize
32KB
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Filesize
64KB
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Filesize
32KB
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Filesize
40KB
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Filesize
48KB
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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
32KB
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Filesize
4KB
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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
48KB
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Filesize
32KB
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Filesize
9.9MB
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Filesize
32KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
808KB
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Filesize
808KB