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Analysis
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max time kernel
161s -
max time network
185s -
platform
windows10-2004_x64 -
resource
win10v2004-20230915-en -
resource tags
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submitted
15/10/2023, 19:39
General
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Target
7609a834c94e791232efcf7fe8fe7df0_exe32.exe
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Size
783KB
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MD5
7609a834c94e791232efcf7fe8fe7df0
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SHA1
d1d3e1755f5d4d264a7d5cf2fdb6f0bcd3afc61f
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SHA256
b155894733ade318a1448d83f693806ed14dec0378d03513ecab33971106a4ab
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SHA512
f093b654517987cd3c2d4576e0af7ac0eb5d917967ceab42f1cc5e2d0a14d731c54f6e32d24dcf052ffb2c7970fd3a7b7ff42d08d738dd8fdad05fb458e6a8b8
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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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Process spawned unexpected child process 6 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
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UAC bypass 3 TTPs 3 IoCs
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DCRat payload 2 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Adds Run key to start application 2 TTPs 6 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in System32 directory 4 IoCs
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Drops file in Windows directory 2 IoCs
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Creates scheduled task(s) 1 TTPs 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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System policy modification 1 TTPs 3 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\7609a834c94e791232efcf7fe8fe7df0_exe32.exe"C:\Users\Admin\AppData\Local\Temp\7609a834c94e791232efcf7fe8fe7df0_exe32.exe"1⤵
- UAC bypass
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "SIHClient" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SIHClient.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 "sppsvc" /sc ONLOGON /tr "'C:\odt\sppsvc.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 "SppExtComObj" /sc ONLOGON /tr "'C:\Windows\System32\perfd00A\SppExtComObj.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 "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\SppExtComObj\fontdrvhost.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 "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost\StartMenuExperienceHost.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 "TextInputHost" /sc ONLOGON /tr "'C:\odt\TextInputHost.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
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Filesize
783KB
MD57609a834c94e791232efcf7fe8fe7df0
SHA1d1d3e1755f5d4d264a7d5cf2fdb6f0bcd3afc61f
SHA256b155894733ade318a1448d83f693806ed14dec0378d03513ecab33971106a4ab
SHA512f093b654517987cd3c2d4576e0af7ac0eb5d917967ceab42f1cc5e2d0a14d731c54f6e32d24dcf052ffb2c7970fd3a7b7ff42d08d738dd8fdad05fb458e6a8b8
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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
40KB
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Filesize
40KB
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Filesize
32KB
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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
64KB
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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
64KB
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Filesize
64KB
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Filesize
808KB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
10.8MB