Analysis
- max time kernel
60s - max time network
61s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
09/08/2026, 19:01
General
- Target b8f98c6bfaa58830febe05c4891e73c05c2832dac6dfc6606e62341b3d989f28.exe
- Size 63KB
- Sample260809-xpb4raxtcx
- SHA256 b8f98c6bfaa58830febe05c4891e73c05c2832dac6dfc6606e62341b3d989f28
Malware Config
Extracted
-
asyncrat
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1.0.7
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DcRat
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yuwdgywgbdg_2hdc7h
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delay
1
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install
true
-
install_file
DcRat Helper.exe
-
install_folder
%Temp%
-
pastebin_config
https://pastebin.com/raw/tqymu4XX
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes
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C:\Users\Admin\AppData\Local\Temp\b8f98c6bfaa58830febe05c4891e73c05c2832dac6dfc6606e62341b3d989f28.exe"C:\Users\Admin\AppData\Local\Temp\b8f98c6bfaa58830febe05c4891e73c05c2832dac6dfc6606e62341b3d989f28.exe"1⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "DcRat Helper" /tr '"C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "DcRat Helper" /tr '"C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2810.tmp.bat""2⤵
- Executes a command shell one-liner
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"3⤵
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C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"C:\Users\Admin\AppData\Local\Temp\DcRat Helper.exe"1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
DcRat Helper.exe
tmp2810.tmp.bat
memory/2692-0-0x0000000074CA2000-0x0000000074CA3000-memory.dmp
memory/2692-1-0x0000000000720000-0x0000000000736000-memory.dmp
memory/2692-2-0x0000000074C90000-0x000000007544C000-memory.dmp
memory/2692-7-0x0000000074C90000-0x000000007544C000-memory.dmp
memory/4064-11-0x0000000074B20000-0x00000000752DC000-memory.dmp
memory/4064-13-0x0000000074B20000-0x00000000752DC000-memory.dmp