Analysis
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max time kernel
140s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
04-11-2024 15:27
General
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Target
38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe
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Size
675KB
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MD5
314420bac969bcfb9510a0e8cc3686d6
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SHA1
66f1d0a60a2727970476a105c88883f37270e30f
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SHA256
38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26
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SHA512
debf908add95aa0849451aef830e5e71724247d352dcb5dad6b02dca0d54e4e915a9430de80d970a4e7ef3749eb2fc7c6fa7839348d84f546d5934d713e7569c
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SSDEEP
12288:C9X1yJ7/pZY7fiCI/YBfULiXPrQfkXmm1RhdLB9XFy+nM6D+:CVc7EaCQYBfcE1ZM6D+
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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DCRat payload 2 IoCs
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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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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 5 IoCs
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Drops file in Windows 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\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe"C:\Users\Admin\AppData\Local\Temp\38b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows 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\nYlEhdqm9F.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:\Program Files\Windows Mail\SearchApp.exe"C:\Program Files\Windows Mail\SearchApp.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
675KB
MD5314420bac969bcfb9510a0e8cc3686d6
SHA166f1d0a60a2727970476a105c88883f37270e30f
SHA25638b9cc3ccae02c270e3d62e62e3b3b40e90ad7f898372b8a5035445ba32f4b26
SHA512debf908add95aa0849451aef830e5e71724247d352dcb5dad6b02dca0d54e4e915a9430de80d970a4e7ef3749eb2fc7c6fa7839348d84f546d5934d713e7569c
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Filesize
219B
MD5a31d6ee76561b32a8d78d45885074922
SHA1b493a2d03d37dd90460edfa852dd825a6ae2d509
SHA256375a224b8daf9f74bee40a4610cc86e9f5b77d835e4b92bf30bf277940f8c264
SHA512d268ad430056f632e91c7af20beadffa31819eb939e7f8882e2acb918ece3fe9a885928a951a2f221fb6c9f7395498ee1932cc389400b62ac393d1d69234caef
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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
8KB
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Filesize
112KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
96KB
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Filesize
10.8MB
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Filesize
320KB
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Filesize
8KB
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Filesize
10.8MB
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Filesize
704KB