ScreenShot
| Created | 2024.08.12 08:53 | Machine | s1_win7_x6403 |
| Filename | microsoft.exe | ||
| Type | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows | ||
| AI Score |
|
Behavior Score |
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| ZERO API | file : malware | ||
| VT API (file) | |||
| md5 | 27aa8ad8930fa0d076510cfb6573ce74 | ||
| sha256 | 91dc640360851a1e69261fe72d9fa570a73e6d9465c8ebf971dbe840493b890d | ||
| ssdeep | 6144:6JHf/OboJwboxHcE2Heo6e+qFCKs7cDZGrBKdt7cWZGbpYByPT7lyvIcbSIvF68U:c3VwboxHc8o6epUVKd9cWvByPHly5WIl | ||
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 | ||
| impfuzzy | 3:rGsLdAIEK:tf | ||
Network IP location
Signature (25cnts)
| Level | Description |
|---|---|
| danger | Executed a process and injected code into it |
| watch | A process attempted to delay the analysis task. |
| watch | Allocates execute permission to another process indicative of possible code injection |
| watch | Attempts to remove evidence of file being downloaded from the Internet |
| watch | Code injection by writing an executable or DLL to the memory of another process |
| watch | Installs itself for autorun at Windows startup |
| watch | Looks for the Windows Idle Time to determine the uptime |
| watch | One or more of the buffers contains an embedded PE file |
| watch | Potential code injection by writing to the memory of another process |
| watch | Resumed a suspended thread in a remote process potentially indicative of process injection |
| watch | Used NtSetContextThread to modify a thread in a remote process indicative of process injection |
| notice | A process created a hidden window |
| notice | Allocates read-write-execute memory (usually to unpack itself) |
| notice | Checks for the Locally Unique Identifier on the system for a suspicious privilege |
| notice | Checks whether any human activity is being performed by constantly checking whether the foreground window changed |
| notice | Connects to a Dynamic DNS Domain |
| notice | Creates a suspicious process |
| notice | One or more potentially interesting buffers were extracted |
| notice | The binary likely contains encrypted or compressed data indicative of a packer |
| notice | Uses Windows utilities for basic Windows functionality |
| notice | Yara rule detected in process memory |
| info | Checks amount of memory in system |
| info | Checks if process is being debugged by a debugger |
| info | Collects information to fingerprint the system (MachineGuid |
| info | Queries for the computername |
Rules (13cnts)
| Level | Name | Description | Collection |
|---|---|---|---|
| watch | Malicious_Library_Zero | Malicious_Library | binaries (upload) |
| notice | Network_DNS | Communications use DNS | memory |
| info | anti_dbg | Checks if being debugged | memory |
| info | DebuggerCheck__GlobalFlags | (no description) | memory |
| info | DebuggerCheck__QueryInfo | (no description) | memory |
| info | DebuggerHiding__Active | (no description) | memory |
| info | DebuggerHiding__Thread | (no description) | memory |
| info | disable_dep | Bypass DEP | memory |
| info | Is_DotNET_EXE | (no description) | binaries (upload) |
| info | IsPE32 | (no description) | binaries (upload) |
| info | PE_Header_Zero | PE File Signature | binaries (upload) |
| info | SEH__vectored | (no description) | memory |
| info | ThreadControl__Context | (no description) | memory |
Suricata ids
ET POLICY DNS Query to DynDNS Domain *.hopto .org
ET MALWARE NanoCore RAT CnC 7
ET MALWARE NanoCore RAT Keep-Alive Beacon (Inbound)
ET MALWARE NanoCore RAT Keepalive Response 1
ET MALWARE NanoCore RAT Keepalive Response 3
ET MALWARE NanoCore RAT CnC 7
ET MALWARE NanoCore RAT Keep-Alive Beacon (Inbound)
ET MALWARE NanoCore RAT Keepalive Response 1
ET MALWARE NanoCore RAT Keepalive Response 3
PE API
IAT(Import Address Table) Library
mscoree.dll
0x402000 _CorExeMain
EAT(Export Address Table) is none
mscoree.dll
0x402000 _CorExeMain
EAT(Export Address Table) is none