Analysis
- max time kernel
150s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
17/03/2024, 03:31
General
- Target cfd0d3019414ab97ca0501e683121468.exe
- Size 45KB
- Sample240317-d3fjjsdf8t
- SHA256 1af4ec43ca70d9470db5612542c489d99d825d4a5bece64ef08dd465911bce94
Malware Config
Extracted
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asyncrat
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0.5.7B
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Default
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chromeclusterspectr.ddns.net:54842
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PPklC5nx6v
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delay
3
-
install
true
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install_file
chrome.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\cfd0d3019414ab97ca0501e683121468.exe"C:\Users\Admin\AppData\Local\Temp\cfd0d3019414ab97ca0501e683121468.exe"1⤵
- Checks computer location settings
- 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 "chrome" /tr '"C:\Users\Admin\AppData\Roaming\chrome.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Roaming\chrome.exe"'3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp89F0.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\chrome.exe"C:\Users\Admin\AppData\Roaming\chrome.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmp89F0.tmp.bat
chrome.exe
memory/1296-0-0x0000000074DB0000-0x0000000075560000-memory.dmp
memory/1296-1-0x00000000003D0000-0x00000000003E2000-memory.dmp
memory/1296-2-0x0000000004DB0000-0x0000000004DC0000-memory.dmp
memory/1296-3-0x0000000004EC0000-0x0000000004F5C000-memory.dmp
memory/1296-9-0x0000000074DB0000-0x0000000075560000-memory.dmp
memory/1836-13-0x0000000074DB0000-0x0000000075560000-memory.dmp
memory/1836-14-0x00000000050E0000-0x00000000050F0000-memory.dmp
memory/1836-15-0x0000000074DB0000-0x0000000075560000-memory.dmp
memory/1836-16-0x00000000050E0000-0x00000000050F0000-memory.dmp