Analysis
- max time kernel
150s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
10/10/2022, 10:57
General
- Target 475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe
- Size 777KB
- Sample221010-m188hsbed7
- SHA256 475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220
Malware Config
Extracted
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blustealer
-
https://api.telegram.org/bot5732817033:AAFBYIIZmJ7NuvVwD7WRcbV9qwcOqT7RpwM/sendMessage?chat_id=1638137774
Signatures
- BluStealer
A Modular information stealer written in Visual Basic.
- StormKitty
StormKitty is an open source info stealer written in C#.
- StormKitty payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Accesses Microsoft Outlook profiles 1 TTPs 3 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.
- Suspicious use of SetThreadContext 2 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 9 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\XDmcVzcsfBo.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XDmcVzcsfBo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp51AA.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"C:\Users\Admin\AppData\Local\Temp\475a80e9f7b9922f505595624de5d08d0c89b2ef2bb89cc6c2bdb921205ec220.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe3⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmp51AA.tmp
memory/804-133-0x0000000005EB0000-0x0000000006454000-memory.dmp
memory/804-134-0x00000000059A0000-0x0000000005A32000-memory.dmp
memory/804-135-0x0000000005990000-0x000000000599A000-memory.dmp
memory/804-136-0x0000000009400000-0x000000000949C000-memory.dmp
memory/804-137-0x0000000009730000-0x0000000009796000-memory.dmp
memory/804-132-0x0000000000F30000-0x0000000000FF8000-memory.dmp
memory/3128-146-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3128-165-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3128-151-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3128-143-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3356-156-0x00000000705B0000-0x00000000705FC000-memory.dmp
memory/3356-160-0x00000000074F0000-0x00000000074FA000-memory.dmp
memory/3356-149-0x00000000051B0000-0x00000000051D2000-memory.dmp
memory/3356-150-0x0000000005980000-0x00000000059E6000-memory.dmp
memory/3356-141-0x0000000004BF0000-0x0000000004C26000-memory.dmp
memory/3356-152-0x0000000006180000-0x000000000619E000-memory.dmp
memory/3356-164-0x00000000077A0000-0x00000000077A8000-memory.dmp
memory/3356-155-0x0000000006750000-0x0000000006782000-memory.dmp
memory/3356-163-0x00000000077C0000-0x00000000077DA000-memory.dmp
memory/3356-157-0x0000000006720000-0x000000000673E000-memory.dmp
memory/3356-158-0x0000000007AC0000-0x000000000813A000-memory.dmp
memory/3356-159-0x0000000007480000-0x000000000749A000-memory.dmp
memory/3356-145-0x0000000005260000-0x0000000005888000-memory.dmp
memory/3356-161-0x0000000007700000-0x0000000007796000-memory.dmp
memory/3356-162-0x00000000076B0000-0x00000000076BE000-memory.dmp
memory/3800-154-0x0000000000B30000-0x0000000000B4A000-memory.dmp