Analysis
- max time kernel
296s - max time network
288s - platform
windows10-2004_x64 - resource
win10v2004-20240704-en - resource tags
- submitted
08/07/2024, 19:24
General
- Target Silver Rat [Re Lab].7z
- Size 10.6MB
- Sample240708-x4cc3axcla
- SHA256 a384bad25740a4b783eaadd6ade53d96e878e1313c34321ddfb23149fbf6366d
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 10 IoCs
- Obfuscated with Agile.Net obfuscator 4 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\Silver Rat [Re Lab].7z"1⤵
- Modifies registry class
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Program Files\7-Zip\7zG.exe"C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Desktop\" -an -ai#7zMap9551:94:7zEvent244441⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
-
C:\Users\Admin\Desktop\Silver Rat [Re Lab]\SilverRat.exe"C:\Users\Admin\Desktop\Silver Rat [Re Lab]\SilverRat.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Tmp75B9.tmp
Bunifu.Licensing.dll
Bunifu.UI.WinForms.1.5.3.dll
Guna.UI2.dll
Builder.xml
SocketPort.xml
SilverRat.exe
SilverRat.exe.config
bunifu.ui.winforms.dll
cgeoip.dll
memory/3332-89-0x00000000072C0000-0x000000000730E000-memory.dmp
memory/3332-85-0x0000000007DC0000-0x0000000007F10000-memory.dmp
memory/3332-93-0x00000000081A0000-0x00000000083F2000-memory.dmp
memory/3332-94-0x0000000008180000-0x000000000818A000-memory.dmp
memory/3332-95-0x00000000090D0000-0x0000000009102000-memory.dmp
memory/3332-96-0x00000000091A0000-0x000000000923C000-memory.dmp
memory/3332-81-0x0000000007340000-0x00000000074B6000-memory.dmp
memory/3332-100-0x00000000096B0000-0x00000000097FE000-memory.dmp
memory/3332-77-0x0000000006EC0000-0x0000000006F52000-memory.dmp
memory/3332-76-0x00000000075C0000-0x0000000007B64000-memory.dmp
memory/3332-75-0x0000000000B50000-0x000000000247E000-memory.dmp