Analysis
- max time kernel
148s - max time network
153s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
09/08/2026, 17:58
General
- Target 5fd493615b731c767be670d33a4e48ec89ad264bf583c2b087d7645a4727986b.exe
- Size 122KB
- Sample260809-wka58ashjf
- SHA256 5fd493615b731c767be670d33a4e48ec89ad264bf583c2b087d7645a4727986b
Malware Config
Extracted
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asyncrat
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0.5.7B
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kma
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193.161.193.99:49916
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193.161.193.99:7707
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193.161.193.99:7474
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VibymMRFkx2O
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delay
3
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install
true
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install_file
Microsoft (P) Aggregator Host.exe
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install_folder
%AppData%
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local_host
127.0.0.1
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Family: DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Async RAT payload 2 IoCs
- Detects DonutLoader 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
- 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 31 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
- 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\5fd493615b731c767be670d33a4e48ec89ad264bf583c2b087d7645a4727986b.exe"C:\Users\Admin\AppData\Local\Temp\5fd493615b731c767be670d33a4e48ec89ad264bf583c2b087d7645a4727986b.exe"1⤵
- 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 schtasks /create /f /sc onlogon /rl highest /tn "Microsoft (P) Aggregator Host" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"' & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Microsoft (P) Aggregator Host" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5AA9.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"C:\Users\Admin\AppData\Roaming\Microsoft (P) Aggregator Host.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp5AA9.tmp.bat
Microsoft (P) Aggregator Host.exe
memory/236-18-0x00007FF7B57D0000-0x00007FF7B57F7000-memory.dmp
memory/988-0-0x000002CE179C0000-0x000002CE179D3000-memory.dmp
memory/988-1-0x00007FFC9299F000-0x00007FFC929A0000-memory.dmp
memory/988-2-0x000002CE19240000-0x000002CE19252000-memory.dmp
memory/988-3-0x00007FFC92810000-0x00007FFC931B4000-memory.dmp
memory/988-8-0x00007FF66C150000-0x00007FF66C177000-memory.dmp
memory/988-9-0x00007FFC92810000-0x00007FFC931B4000-memory.dmp
memory/5980-14-0x000001B212800000-0x000001B212812000-memory.dmp
memory/5980-19-0x00007FF7B57D0000-0x00007FF7B57F7000-memory.dmp