Analysis
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max time kernel
118s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
22-12-2024 02:14
General
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Target
4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20.exe
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Size
4.7MB
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MD5
99209e1f30a833e0c7654fcc0aa2c9c5
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SHA1
75ac3347aae0a9dc3520ce0d31ca6ee2c7f4bbe5
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SHA256
4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20
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SHA512
abd6cac229ffac33e6ec887e41b041c4e02a5da1a054c474549657dfda326afbfd127c435f796d2945b0eb1d9586599936d0ddae339845dd43a91610c5baaa5b
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SSDEEP
12288:egY1Cj1eUAM2X3bV+rrmDl5/NJoBh3fVFycj3eI8HnR80p0C2jGJBHAfVDS3E6t1:elMednbV+rrmlzM6AOhujGJBKKE6t1
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 7 IoCs
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Browser Information Discovery 1 TTPs
Enumerate browser information.
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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 use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20.exe"C:\Users\Admin\AppData\Local\Temp\4cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20.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\mYYcTxZe9T.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\Idle.exe"C:\Recovery\WindowsRE\Idle.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.7MB
MD599209e1f30a833e0c7654fcc0aa2c9c5
SHA175ac3347aae0a9dc3520ce0d31ca6ee2c7f4bbe5
SHA2564cb5fdd185102520c29c5975190f67567eeffaa42dc3692ee0cc9595b8a07e20
SHA512abd6cac229ffac33e6ec887e41b041c4e02a5da1a054c474549657dfda326afbfd127c435f796d2945b0eb1d9586599936d0ddae339845dd43a91610c5baaa5b
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Filesize
206B
MD5be7bc1f134760469047fb5fe8f8d7921
SHA1500410226aaaf749d410b14e11a8caa83a9fa41d
SHA256bdfaccf27a31fcd6d91db2cec94d4c7cfa5ed80bfc02ecd3c857215b6f156879
SHA51261748be89da6fdc4d6b3a57f06b217659ff8ab66fd588b833b998f43935748a6691f3088e10acadd995ada525e3aa022e6f78d5921304cd153ab9f4183d4f864
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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
96KB
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Filesize
56KB
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Filesize
48KB
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Filesize
72KB
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Filesize
8KB
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Filesize
320KB
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Filesize
5.2MB
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Filesize
10.8MB
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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
112KB
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Filesize
10.8MB
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Filesize
848KB