Analysis
- max time kernel
150s - max time network
125s - platform
windows7_x64 - resource
win7v20210410 - submitted
29/04/2021, 07:01
General
- Target 44509807.exe
- Size 967KB
- Sample210429-5brjnte27a
- SHA256 3aa7ff3796ff778b0792bd69b9f8aa0cb09f133e415134f85c8dd174c8e8382f
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 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.
- 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 17 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
-
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⤵
- 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/1740-67-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/1740-70-0x0000000000400000-0x00000000004B0000-memory.dmp
memory/1740-73-0x0000000002450000-0x0000000002451000-memory.dmp
memory/1760-72-0x0000000000400000-0x00000000004CE000-memory.dmp
memory/1864-60-0x0000000076A81000-0x0000000076A83000-memory.dmp
memory/1864-62-0x0000000000360000-0x0000000000363000-memory.dmp