Analysis
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max time kernel
143s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
15-12-2024 18:48
General
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Target
E7870CD0C30A52066C454C15A5A5A2F5.exe
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Size
3.5MB
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MD5
e7870cd0c30a52066c454c15a5a5a2f5
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SHA1
fc64203e05c104a116e7e4c354c9ee77c99737d6
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SHA256
e4a958444e72eb1b3be02f3a8bf29044a81f328405a4969a4f66515ef219774e
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SHA512
3e0a40959eaba1fbf3cb7a11707bc658421f3066e4e1beea56088ac213c10524127d4d9e2500e549a1ee608887c113973892d54fb91fae6ea9db4eb9e818bebe
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SSDEEP
98304:sALvAvoV3JDBQSBK5f7a6uBt9iofavIa:smvvV5DpQ7a6ugoCvI
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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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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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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Suspicious behavior: EnumeratesProcesses 64 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 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\E7870CD0C30A52066C454C15A5A5A2F5.exe"C:\Users\Admin\AppData\Local\Temp\E7870CD0C30A52066C454C15A5A5A2F5.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\IASIrEL6Vt.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\chcp.comchcp 650013⤵
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C:\Windows\system32\w32tm.exew32tm /stripchart /computer:localhost /period:5 /dataonly /samples:23⤵
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C:\Recovery\WindowsRE\wininit.exe"C:\Recovery\WindowsRE\wininit.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.5MB
MD5e7870cd0c30a52066c454c15a5a5a2f5
SHA1fc64203e05c104a116e7e4c354c9ee77c99737d6
SHA256e4a958444e72eb1b3be02f3a8bf29044a81f328405a4969a4f66515ef219774e
SHA5123e0a40959eaba1fbf3cb7a11707bc658421f3066e4e1beea56088ac213c10524127d4d9e2500e549a1ee608887c113973892d54fb91fae6ea9db4eb9e818bebe
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Filesize
209B
MD5cbaf6f96fc9379ffacde31f90bbb584e
SHA1ddd5afcd5f5203ddea9a49eb50b98ae4c95929f0
SHA2561545ebe0dcb46e79f806bcf221328ec63521b2d73c36133b8b92f17e5290db75
SHA5124d6fd01c8ce71bd2f7fd41ff10020d3807714b4b721108b3b78346110c967002fad7333f7f9940938fba33b7b162c1e24dd2bab9392a814a39e6ba5eb1926c94
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Filesize
428KB
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Filesize
72KB
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Filesize
56KB
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Filesize
152KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
56KB
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Filesize
112KB
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Filesize
64KB
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Filesize
320KB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
10.8MB
-
Filesize
88KB
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Filesize
96KB
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Filesize
56KB
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Filesize
10.8MB
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Filesize
8KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
72KB
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Filesize
5.2MB
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Filesize
56KB
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Filesize
64KB
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Filesize
64KB
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Filesize
360KB
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Filesize
56KB
-
Filesize
64KB
-
Filesize
96KB
-
Filesize
312KB
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Filesize
48KB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
3.6MB