Analysis
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max time kernel
119s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
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submitted
23-01-2025 01:39
General
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Target
40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad.exe
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Size
783KB
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MD5
284f614242b459699b4f93b34bcea38a
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SHA1
496d71d236c11b794dd355f3e76614c839971d42
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SHA256
40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad
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SHA512
398d9ade2bc0a108906784b85160396feed4a80586ac47d70db1079f7dfbdb728debf687164d36db9014a2c2cf1f47be33faa6c33644a3c44ec6f05c4ead74df
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SSDEEP
12288:mqnOYxdAgpoNeF91rg5iFdr0yQ9gYx+EIpakCYJRU7Q9bWoFzqKt:m+OQbpbgsFdAyQvzSqaq8q8
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 5 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 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 5 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in System32 directory 8 IoCs
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Drops file in Program Files 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 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 10 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 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\40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad.exe"C:\Users\Admin\AppData\Local\Temp\40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad.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
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C:\Windows\System32\onex\wininit.exe"C:\Windows\System32\onex\wininit.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\es-ES\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 "spoolsv" /sc ONLOGON /tr "'C:\Windows\System32\NlsLexicons0024\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 "40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad" /sc ONLOGON /tr "'C:\Users\Admin\NetHood\40ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad.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\onex\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 "dllhost" /sc ONLOGON /tr "'C:\Recovery\18fc4542-69f6-11ef-a46c-62cb582c238c\dllhost.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
783KB
MD5284f614242b459699b4f93b34bcea38a
SHA1496d71d236c11b794dd355f3e76614c839971d42
SHA25640ff13f7d3616f322000142cda7b432b45ea18df020c0dcfc1455202d67ad0ad
SHA512398d9ade2bc0a108906784b85160396feed4a80586ac47d70db1079f7dfbdb728debf687164d36db9014a2c2cf1f47be33faa6c33644a3c44ec6f05c4ead74df
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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
40KB
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Filesize
48KB
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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
32KB
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Filesize
4KB
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Filesize
32KB
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Filesize
9.9MB
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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
808KB
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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