Analysis
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max time kernel
16s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
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submitted
07-11-2024 19:15
General
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Target
60cd1f906b6b9d1a1f087663fadd53d2448536b8297e0da303e46f2430f0f3b8.exe
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Size
952KB
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MD5
6aa5b5b95cc8448445b80a05bc24c778
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SHA1
7bb3cbf0fea18dc130306848e387702ca83bac14
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SHA256
60cd1f906b6b9d1a1f087663fadd53d2448536b8297e0da303e46f2430f0f3b8
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SHA512
395c626775138f78b56add5d6bbdde426c96ecaa76f3fa07823d546709a0cfb779532d832ae6a594d9c2789cead722f020338884a4b888ec603fd180939d0887
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SSDEEP
24576:e+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX:Z8/KfRTK
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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Modifies WinLogon for persistence 2 TTPs 9 IoCs
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Process spawned unexpected child process 9 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 3 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 18 IoCs
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Checks whether UAC is enabled 1 TTPs 4 IoCs
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Drops file in System32 directory 25 IoCs
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Drops file in Program Files directory 10 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 9 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 3 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\60cd1f906b6b9d1a1f087663fadd53d2448536b8297e0da303e46f2430f0f3b8.exe"C:\Users\Admin\AppData\Local\Temp\60cd1f906b6b9d1a1f087663fadd53d2448536b8297e0da303e46f2430f0f3b8.exe"1⤵
- Modifies WinLogon for persistence
- 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
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C:\PerfLogs\Admin\OSPPSVC.exe"C:\PerfLogs\Admin\OSPPSVC.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\System32\UIAnimation\csrss.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 "OSPPSVC" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\OSPPSVC.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 "services" /sc ONLOGON /tr "'C:\Users\Admin\Searches\services.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 "lsass" /sc ONLOGON /tr "'C:\Windows\System32\WPDSp\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 "OSPPSVC" /sc ONLOGON /tr "'C:\PerfLogs\Admin\OSPPSVC.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 "dwm" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\dwm.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 "wininit" /sc ONLOGON /tr "'C:\Windows\System32\cryptsp\wininit.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:\Windows\System32\wups2\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 "taskhost" /sc ONLOGON /tr "'C:\Windows\System32\chgport\taskhost.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
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
952KB
MD56aa5b5b95cc8448445b80a05bc24c778
SHA17bb3cbf0fea18dc130306848e387702ca83bac14
SHA25660cd1f906b6b9d1a1f087663fadd53d2448536b8297e0da303e46f2430f0f3b8
SHA512395c626775138f78b56add5d6bbdde426c96ecaa76f3fa07823d546709a0cfb779532d832ae6a594d9c2789cead722f020338884a4b888ec603fd180939d0887
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Filesize
40KB
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Filesize
32KB
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Filesize
64KB
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Filesize
64KB
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Filesize
48KB
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Filesize
4KB
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Filesize
40KB
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Filesize
9.9MB
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Filesize
40KB
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Filesize
48KB
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Filesize
48KB
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Filesize
976KB
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Filesize
9.9MB
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Filesize
976KB