Analysis
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max time kernel
107s -
max time network
111s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
10-11-2024 06:38
Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win11-20241007-en
Errors
General
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Target
Client-built.exe
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Size
78KB
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MD5
3adc956e3228a6d69cbc82cdf015ea9b
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SHA1
58d5b8f8ea0657797a750c8d076d9daee72b52b6
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SHA256
1a91ad0e6655d6edbc971f6d00e59c7073dbdf9c6ce2182d2b5a165e251cdc6a
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SHA512
ac1701e2399ca30a1bae33019b53a7088599b788ef3e283571ceaf92eb5caf5781135a7c0ecc63753ceba04634732c092c654b7e2467faf6eeddf85bbffb4d70
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SSDEEP
1536:52WjO8XeEXFh5P7v88wbjNrfxCXhRoKV6+V+JPIC:5Zv5PDwbjNrmAE+5IC
Malware Config
Extracted
discordrat
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discord_token
MTMwNDcwODA2MDQzMzg3OTA4MA.GfazZS.LZD6AvHm80-w_84PJNSVHHZnAXQ3XdmRLbP6o8
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server_id
1304705193463775302
Signatures
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Discord RAT
A RAT written in C# using Discord as a C2.
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Discordrat family
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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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Legitimate hosting services abused for malware hosting/C2 1 TTPs 12 IoCs
Processes:
flow ioc 15 discord.com 3 discord.com 6 discord.com 10 discord.com 13 discord.com 9 discord.com 11 raw.githubusercontent.com 12 discord.com 1 discord.com 1 raw.githubusercontent.com 5 discord.com 7 discord.com -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
Client-built.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3973800497-2716210218-310192997-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpF935.tmp.png" Client-built.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies data under HKEY_USERS 15 IoCs
Processes:
LogonUI.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365268" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "228" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432" LogonUI.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Client-built.exeshutdown.exedescription pid process Token: SeDebugPrivilege 488 Client-built.exe Token: SeShutdownPrivilege 3772 shutdown.exe Token: SeRemoteShutdownPrivilege 3772 shutdown.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
LogonUI.exepid process 792 LogonUI.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
Client-built.exedescription pid process target process PID 488 wrote to memory of 4296 488 Client-built.exe SCHTASKS.exe PID 488 wrote to memory of 4296 488 Client-built.exe SCHTASKS.exe PID 488 wrote to memory of 3772 488 Client-built.exe shutdown.exe PID 488 wrote to memory of 3772 488 Client-built.exe shutdown.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Sets desktop wallpaper using registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:488 -
C:\Windows\SYSTEM32\SCHTASKS.exe"SCHTASKS.exe" /create /tn "$77Client-built.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Client-built.exe'" /sc onlogon /rl HIGHEST2⤵
- Scheduled Task/Job: Scheduled Task
PID:4296
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C:\Windows\System32\shutdown.exe"C:\Windows\System32\shutdown.exe" /s /t 02⤵
- Suspicious use of AdjustPrivilegeToken
PID:3772
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa3a08055 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:792