Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
- submitted
02/07/2026, 09:22
General
- Target f7b61a1a34bb361b892b0f171b249ae009cf58682e7795058f7af6e7ab9280ba.exe
- Size 45KB
- Sample260702-lb42tsdv8m
- SHA256 f7b61a1a34bb361b892b0f171b249ae009cf58682e7795058f7af6e7ab9280ba
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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madcityservers.com:80
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madcityservers.com:22
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madcityservers.com:8080
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madcityservers.com:8880
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madcityservers.com:2052
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madcityservers.com:2082
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madcityservers.com:2086
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madcityservers.com:2095
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madcityservers.com:443
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madcityservers.com:2053
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madcityservers.com:2083
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madcityservers.com:2087
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madcityservers.com:2096
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madcityservers.com:8443
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www.madcityservers.com:80
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www.madcityservers.com:22
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www.madcityservers.com:8080
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www.madcityservers.com:8880
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www.madcityservers.com:2052
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www.madcityservers.com:2082
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kCRCURBIg5vF
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delay
0
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install
true
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install_file
bv6g9.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 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.
- Suspicious behavior: EnumeratesProcesses 29 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\f7b61a1a34bb361b892b0f171b249ae009cf58682e7795058f7af6e7ab9280ba.exe"C:\Users\Admin\AppData\Local\Temp\f7b61a1a34bb361b892b0f171b249ae009cf58682e7795058f7af6e7ab9280ba.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bv6g9" /tr '"C:\Users\Admin\AppData\Roaming\bv6g9.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "bv6g9" /tr '"C:\Users\Admin\AppData\Roaming\bv6g9.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC29.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\bv6g9.exe"C:\Users\Admin\AppData\Roaming\bv6g9.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
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C:\Users\Admin\AppData\Roaming\bv6g9.exe"C:\Users\Admin\AppData\Roaming\bv6g9.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
prep_Activatable Class_Hermes_perf.cache
tmpAC29.tmp.bat
bv6g9.exe
memory/1184-14-0x00000000743D0000-0x0000000074B8C000-memory.dmp
memory/1184-12-0x00000000743D0000-0x0000000074B8C000-memory.dmp
memory/3416-211-0x000001A780000000-0x000001A7802BC000-memory.dmp
memory/5036-8-0x0000000074540000-0x0000000074CFC000-memory.dmp
memory/5036-0-0x0000000074552000-0x0000000074553000-memory.dmp
memory/5036-3-0x0000000005990000-0x0000000005A2C000-memory.dmp
memory/5036-2-0x0000000074540000-0x0000000074CFC000-memory.dmp
memory/5036-1-0x0000000000FB0000-0x0000000000FC2000-memory.dmp
memory/5860-32-0x0000012902910000-0x0000012902930000-memory.dmp
memory/5860-29-0x0000012902E20000-0x0000012902F20000-memory.dmp
memory/5860-18-0x00000129001E0000-0x00000129002E0000-memory.dmp
memory/5860-17-0x00000129001E0000-0x00000129002E0000-memory.dmp
memory/5860-62-0x0000012914710000-0x0000012914730000-memory.dmp
memory/5860-28-0x0000012902BB0000-0x0000012902BD0000-memory.dmp