Analysis
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max time kernel
94s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
06-01-2025 19:14
General
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Target
3f259715f8b59d89ac6b64384ca7083bd393d91e499f8e1252d284147a91021d.exe
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Size
2.7MB
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MD5
d553e626715bbdc6ef966fb1cbc7e0ce
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SHA1
7dd91961404f829e09c288c7fccbc73867427677
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SHA256
3f259715f8b59d89ac6b64384ca7083bd393d91e499f8e1252d284147a91021d
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SHA512
478ab0da4b2f4cb11647783afed6bd52404fe2ddb198a5dc8de5846ec3406c6895365e13168fa9667c9af5c244fd772da1e716376eac656fdcb6836d74475d5a
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SSDEEP
49152:MDkZWCF2T8juUND4YQxZzfllulb0fnyN27mEGnjYEhQ+QK:t4CF2sjELplCbmyN27PxEhQ+
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 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 3 IoCs
Detects payload of DCRat, commonly dropped by NSIS installers.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE 1 IoCs
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Checks whether UAC is enabled 1 TTPs 2 IoCs
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Drops file in Program Files directory 5 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
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Scheduled Task/Job: Scheduled Task 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 20 IoCs
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Suspicious behavior: GetForegroundWindowSpam 1 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
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System policy modification 1 TTPs 4 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\3f259715f8b59d89ac6b64384ca7083bd393d91e499f8e1252d284147a91021d.exe"C:\Users\Admin\AppData\Local\Temp\3f259715f8b59d89ac6b64384ca7083bd393d91e499f8e1252d284147a91021d.exe"1⤵
- UAC bypass
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\Favorites\unsecapp.exe"C:\Users\Admin\Favorites\unsecapp.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- System policy modification
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Favorites\unsecapp.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Users\Admin\Favorites\unsecapp.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 "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\Favorites\unsecapp.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 "csrssc" /sc MINUTE /mo 5 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\csrss.exe'" /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Microsoft Office 15\ClientX64\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 "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files\Microsoft Office 15\ClientX64\csrss.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.7MB
MD56cde5c34b54b5cc5c9ced4ef74a9eb8f
SHA1b12dacdfc2ff1fe4a8777e323f7e376fa7171024
SHA2561e49b09da6768cf42d33a265d17f3ebc4256b9a10270d3866fa2a9c5a80d76ef
SHA5120cb54c0ac37a812fe6f62ce8b732093d3d0213276847c4b896b8be368103d70af48a115b3573e42e9921a2d72752d8f9048ffc1eddaf9888b76f29f4dc39b054
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Filesize
2.7MB
MD5d553e626715bbdc6ef966fb1cbc7e0ce
SHA17dd91961404f829e09c288c7fccbc73867427677
SHA2563f259715f8b59d89ac6b64384ca7083bd393d91e499f8e1252d284147a91021d
SHA512478ab0da4b2f4cb11647783afed6bd52404fe2ddb198a5dc8de5846ec3406c6895365e13168fa9667c9af5c244fd772da1e716376eac656fdcb6836d74475d5a
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Filesize
32KB
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Filesize
10.8MB
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Filesize
8KB
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Filesize
320KB
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Filesize
64KB
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Filesize
32KB
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Filesize
88KB
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Filesize
40KB
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Filesize
32KB
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Filesize
32KB
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Filesize
112KB
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Filesize
56KB
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Filesize
344KB
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Filesize
40KB
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Filesize
48KB
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Filesize
48KB
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Filesize
48KB
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Filesize
56KB
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Filesize
32KB
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Filesize
5.2MB
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Filesize
10.8MB
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Filesize
2.7MB
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Filesize
72KB