Analysis
- max time kernel
149s - max time network
115s - platform
windows10_x64 - resource
win10v20210410 - submitted
05/07/2021, 07:12
General
- Target a80e72c6e6b9521eefb526311db84119.exe
- Size 358KB
- Sample210705-5gdfsvlsha
- SHA256 f101ea42d63ecc3c5c56db1b6b69083489bd914ccefb493f3dc24407c31da860
Malware Config
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty Payload 2 IoCs
- Async RAT payload 2 IoCs
- Drops startup file 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops desktop.ini file(s) 7 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 35 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe"C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\pOwERsHeLl.exe"pOwERsHeLl.exe" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\%Namee%'2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe"C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe"2⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650014⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show profile4⤵
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C:\Windows\SysWOW64\findstr.exefindstr All4⤵
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\chcp.comchcp 650014⤵
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C:\Windows\SysWOW64\netsh.exenetsh wlan show networks mode=bssid4⤵
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\a80e72c6e6b9521eefb526311db84119.exe"3⤵
- Creates scheduled task(s)
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/700-133-0x0000000007810000-0x0000000007811000-memory.dmp
memory/700-150-0x00000000074D3000-0x00000000074D4000-memory.dmp
memory/700-138-0x0000000008990000-0x0000000008991000-memory.dmp
memory/700-122-0x0000000004D90000-0x0000000004D91000-memory.dmp
memory/700-136-0x0000000008200000-0x0000000008201000-memory.dmp
memory/700-124-0x00000000074D0000-0x00000000074D1000-memory.dmp
memory/700-125-0x00000000074D2000-0x00000000074D3000-memory.dmp
memory/700-137-0x0000000008160000-0x0000000008161000-memory.dmp
memory/700-134-0x0000000007A90000-0x0000000007A91000-memory.dmp
memory/700-140-0x0000000008820000-0x0000000008821000-memory.dmp
memory/700-147-0x0000000009610000-0x0000000009611000-memory.dmp
memory/700-146-0x00000000095F0000-0x00000000095F1000-memory.dmp
memory/700-145-0x0000000009690000-0x0000000009691000-memory.dmp
memory/700-123-0x0000000007B10000-0x0000000007B11000-memory.dmp
memory/1292-161-0x0000000006ED0000-0x0000000006ED1000-memory.dmp
memory/1292-139-0x0000000005590000-0x0000000005591000-memory.dmp
memory/1292-152-0x0000000005D60000-0x0000000005D61000-memory.dmp
memory/1292-132-0x00000000055D0000-0x00000000055D1000-memory.dmp
memory/1292-164-0x0000000008260000-0x0000000008261000-memory.dmp
memory/1292-127-0x0000000000400000-0x0000000000432000-memory.dmp
memory/1292-162-0x0000000007540000-0x0000000007541000-memory.dmp
memory/1292-160-0x0000000005593000-0x0000000005595000-memory.dmp
memory/3172-126-0x00000000051F0000-0x00000000051FC000-memory.dmp
memory/3172-114-0x00000000008C0000-0x00000000008C1000-memory.dmp
memory/3172-119-0x0000000005500000-0x0000000005501000-memory.dmp
memory/3172-117-0x00000000051C0000-0x00000000051C1000-memory.dmp
memory/3172-116-0x0000000005760000-0x0000000005761000-memory.dmp