Analysis
- max time kernel
150s - max time network
111s - platform
windows10_x64 - resource
win10v20210408 - submitted
29/04/2021, 07:01
General
- Target 44509807.exe
- Size 967KB
- Sample210429-5brjnte27a
- SHA256 3aa7ff3796ff778b0792bd69b9f8aa0cb09f133e415134f85c8dd174c8e8382f
Score
7/10
Malware Config
Signatures
- Loads dropped DLL 1 IoCs
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- Adds Run key to start application 2 TTPs 1 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 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 16 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\44509807.exe"C:\Users\Admin\AppData\Local\Temp\44509807.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\44509807.exe"C:\Users\Admin\AppData\Local\Temp\44509807.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.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 884⤵
- Program crash
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"3⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/808-118-0x0000000003290000-0x0000000003293000-memory.dmp
memory/3052-122-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/3052-129-0x00000000095F0000-0x00000000095F1000-memory.dmp
memory/3052-130-0x0000000009820000-0x0000000009821000-memory.dmp
memory/3336-119-0x0000000000400000-0x00000000004CE000-memory.dmp