Analysis
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max time kernel
140s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
21-12-2024 10:12
General
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Target
B9C8DEE5E0470B21D27B1A70AFE25495.exe
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Size
25.5MB
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MD5
b9c8dee5e0470b21d27b1a70afe25495
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SHA1
955aebc905591be2c45fb95ac689374552455b58
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SHA256
04069d6dc8c9b79d04e96c9cd2950a374abe0c2604110c27227f60a851da123d
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SHA512
995ea49bdcba082927264e6dca3ac5d45ad8e152a3c9d71b9f63881e10537f866b5f45e1634af5bc1c44fb36fb0ec48b1a0ece866e1f58d14c2dcc46a0c88cf7
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SSDEEP
98304:vS4Lhcl+62txet6kccrV00zSO76bgkVB:vS4yA62txY1cc0XOubtVB
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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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 2 IoCs
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Drops file in Windows directory 7 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\B9C8DEE5E0470B21D27B1A70AFE25495.exe"C:\Users\Admin\AppData\Local\Temp\B9C8DEE5E0470B21D27B1A70AFE25495.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\i5jtWjWaVc.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:\Windows\Installer\services.exe"C:\Windows\Installer\services.exe"3⤵
- Executes dropped EXE
- 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
25.5MB
MD5b9c8dee5e0470b21d27b1a70afe25495
SHA1955aebc905591be2c45fb95ac689374552455b58
SHA25604069d6dc8c9b79d04e96c9cd2950a374abe0c2604110c27227f60a851da123d
SHA512995ea49bdcba082927264e6dca3ac5d45ad8e152a3c9d71b9f63881e10537f866b5f45e1634af5bc1c44fb36fb0ec48b1a0ece866e1f58d14c2dcc46a0c88cf7
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Filesize
209B
MD58c8c47e69b1d06509cc55286b9e6e856
SHA14119d2629db365b8805505169d818fa59ad75b1a
SHA256ffd50cda04abfcf34eabe81828567521afb98b38cc0a3bf1cc595bac004d15cf
SHA512d47939bb05bc1b6e1cae9ff37273dc7c24769b443fbe695a857fe9ccfe5844e6147874320997c5f18929cbfdbacce68a41aec499e5533bdb24f00e73cfbc9184
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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
64KB
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Filesize
10.8MB
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Filesize
88KB
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Filesize
10.8MB
-
Filesize
112KB
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Filesize
320KB
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Filesize
64KB
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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
56KB
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Filesize
72KB
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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
56KB
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Filesize
72KB
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Filesize
56KB
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Filesize
5.2MB
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Filesize
64KB
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Filesize
64KB
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Filesize
360KB
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Filesize
56KB
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Filesize
64KB
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Filesize
56KB
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Filesize
96KB
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Filesize
48KB
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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
8KB
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Filesize
3.0MB