Resubmissions
19-12-2024 09:20
241219-la9kxsykfz 10Analysis
-
max time kernel
15s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
-
submitted
19-12-2024 09:20
General
-
Target
a5b3315ae86b5eb61d1216e3bbaada89678d1eb3e03955ebc7f20c1e16f1e2f1N.exe
-
Size
783KB
-
MD5
12da5bf73f5194469ef18dfbbf732730
-
SHA1
b3780fe64b0e17195f44be49496d6910637c6f84
-
SHA256
a5b3315ae86b5eb61d1216e3bbaada89678d1eb3e03955ebc7f20c1e16f1e2f1
-
SHA512
ba90992a64c9c68a8d90611b3d2ea499763b9a2d0e7ac24e9f370d1f5bc44e40080406cc6fe4dfe17073243e2f9ad134bf0be5d9e96a45be7b42c66263ae12f2
-
SSDEEP
12288:GqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqK:G+OQbpbgsFdAyQvzSqaq8q
Malware Config
Signatures
-
DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
-
Dcrat family
-
Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
-
UAC bypass 3 TTPs 6 IoCs
-
DCRat payload 3 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
-
Executes dropped EXE 1 IoCs
-
Adds Run key to start application 2 TTPs 4 IoCs
-
Checks whether UAC is enabled 1 TTPs 4 IoCs
-
Drops file in System32 directory 4 IoCs
-
Drops file in Program Files directory 12 IoCs
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Modifies system certificate store 2 TTPs 2 IoCs
-
Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 19 IoCs
-
Suspicious use of AdjustPrivilegeToken 2 IoCs
-
Suspicious use of WriteProcessMemory 9 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\a5b3315ae86b5eb61d1216e3bbaada89678d1eb3e03955ebc7f20c1e16f1e2f1N.exe"C:\Users\Admin\AppData\Local\Temp\a5b3315ae86b5eb61d1216e3bbaada89678d1eb3e03955ebc7f20c1e16f1e2f1N.exe"1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Program Files directory
- 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\N4MZr7WnyG.bat"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵
-
-
C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPCEXT\OSPPSVC.exe"C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPCEXT\OSPPSVC.exe"3⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
-
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "audiodg" /sc ONLOGON /tr "'C:\Program Files\7-Zip\Lang\audiodg.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPCEXT\OSPPSVC.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\C_1361\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\en-US\wininit.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
-
Filesize
783KB
MD512da5bf73f5194469ef18dfbbf732730
SHA1b3780fe64b0e17195f44be49496d6910637c6f84
SHA256a5b3315ae86b5eb61d1216e3bbaada89678d1eb3e03955ebc7f20c1e16f1e2f1
SHA512ba90992a64c9c68a8d90611b3d2ea499763b9a2d0e7ac24e9f370d1f5bc44e40080406cc6fe4dfe17073243e2f9ad134bf0be5d9e96a45be7b42c66263ae12f2
-
Filesize
264B
MD57ae5fa6c1c237b380eeda3497ae79bab
SHA16d148d5ad35b209a9b81d507dbcc9a1c6f5b71bc
SHA25698654f792dfbc6c96ff0310dd4e857d2483aa9274fb4f1cec3ba75b334fb4af3
SHA512ddb9702beb7ebb6590a812d307b35eb57efa3c7271df27958c593743dd4e98b7008a5b9a5e43a7b59a3b59e0b55101181e3661c5060c4a5d9329840d27a8cbb7
-
Filesize
32KB
-
Filesize
808KB
-
Filesize
64KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
40KB
-
Filesize
40KB
-
Filesize
32KB
-
Filesize
48KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
4KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
48KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
32KB
-
Filesize
9.9MB
-
Filesize
9.9MB
-
Filesize
9.9MB
-
Filesize
9.9MB
-
Filesize
32KB
-
Filesize
9.9MB
-
Filesize
808KB