Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
21-12-2024 10:06
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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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 4 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
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Modifies registry class 1 IoCs
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Runs ping.exe 1 TTPs 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\lo7GkT925Y.bat"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\chcp.comchcp 650013⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Local\Temp\B9C8DEE5E0470B21D27B1A70AFE25495.exe"C:\Users\Admin\AppData\Local\Temp\B9C8DEE5E0470B21D27B1A70AFE25495.exe"3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
25.5MB
MD5b9c8dee5e0470b21d27b1a70afe25495
SHA1955aebc905591be2c45fb95ac689374552455b58
SHA25604069d6dc8c9b79d04e96c9cd2950a374abe0c2604110c27227f60a851da123d
SHA512995ea49bdcba082927264e6dca3ac5d45ad8e152a3c9d71b9f63881e10537f866b5f45e1634af5bc1c44fb36fb0ec48b1a0ece866e1f58d14c2dcc46a0c88cf7
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Filesize
1KB
MD554b2e6b7ff883363a93d869c42fe1a95
SHA1de3238edb42bccc05885837e500049a6015e73db
SHA2561adbc5b2c2a8cc156bc1d9b52e9383df523db7a4aa35117a670a99f49b895808
SHA51251b3f94a8e760e641dda4ce55e7895cc35ef58427e24c32e821a1949345da72d82cc43f84b61bce087cce995728b3352d9f8aee6363bb3b23db5ca9402aa447c
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Filesize
198B
MD5d4f62e1becf6504365bbe355b7455619
SHA1eb60882f289e6674764fbb8123570ca3bd7fdf6e
SHA256902da162405fa784b7392891f31f16da5405154eaa07c01203762bb2af2f886a
SHA51293a24bf3e5245306bc03fe4695010d77d8ca9fd23e65eeb2e25430acd15c3e387d8dade7adb28313be88effb3cbc5182f99c7c0901b5b16ca9b5495c8a499732
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Filesize
72KB
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Filesize
10.8MB
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Filesize
56KB
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Filesize
10.8MB
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Filesize
112KB
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Filesize
56KB
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Filesize
10.8MB
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Filesize
5.2MB
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Filesize
64KB
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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
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
64KB
-
Filesize
88KB
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Filesize
8KB
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Filesize
10.8MB
-
Filesize
10.8MB
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Filesize
320KB
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Filesize
64KB
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Filesize
10.8MB
-
Filesize
64KB
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Filesize
10.8MB
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Filesize
360KB
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Filesize
56KB
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Filesize
10.8MB
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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
820KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
3.0MB
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Filesize
32KB
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Filesize
820KB