ScreenShot
| Created | 2021.09.22 22:36 | Machine | s1_win7_x6401 |
| Filename | buildcpils.exe | ||
| Type | PE32+ executable (GUI) x86-64 Mono/.Net assembly, for MS Windows | ||
| AI Score |
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Behavior Score |
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| ZERO API | file : malware | ||
| VT API (file) | 17 detected (malicious, high confidence, YakbeexMSIL, confidence, 100%, FileRepMalware, Sabsik, Artemis, Unsafe, Static AI, Malicious PE, susgen) | ||
| md5 | 26b9716419a2eac7f4b367e6cc06a946 | ||
| sha256 | 5f2bb993e586b280867fe5ca8a86d14f4ac659ce4ca0ce1e63379a5fad668d44 | ||
| ssdeep | 768:9wlIOdRWC4sDUIaO2qvTwbQ1dsI5QY+QN8Aliwt4:9wCOdRWC4sDUfzbQ8VY+QCAliP | ||
| imphash | |||
| impfuzzy | 3:: | ||
Network IP location
Signature (18cnts)
| Level | Description |
|---|---|
| watch | A process performed obfuscation on information about the computer or sent it to a remote location indicative of CnC Traffic/Preperations. |
| watch | Communicates with host for which no DNS query was performed |
| watch | Drops a binary and executes it |
| watch | File has been identified by 17 AntiVirus engines on VirusTotal as malicious |
| watch | Installs itself for autorun at Windows startup |
| notice | A process created a hidden window |
| notice | Allocates read-write-execute memory (usually to unpack itself) |
| notice | Checks adapter addresses which can be used to detect virtual network interfaces |
| notice | Checks for the Locally Unique Identifier on the system for a suspicious privilege |
| notice | Creates a suspicious process |
| notice | Creates executable files on the filesystem |
| notice | Queries the disk size which could be used to detect virtual machine with small fixed size or dynamic allocation |
| notice | Uses Windows utilities for basic Windows functionality |
| 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 | Command line console output was observed |
| info | Queries for the computername |
Rules (11cnts)
| Level | Name | Description | Collection |
|---|---|---|---|
| warning | Generic_Malware_Zero | Generic Malware | binaries (download) |
| warning | Generic_Malware_Zero | Generic Malware | binaries (upload) |
| info | IsPE64 | (no description) | binaries (download) |
| info | IsPE64 | (no description) | binaries (upload) |
| info | OS_Processor_Check_Zero | OS Processor Check | binaries (download) |
| info | OS_Processor_Check_Zero | OS Processor Check | binaries (upload) |
| info | PE_Header_Zero | PE File Signature | binaries (download) |
| info | PE_Header_Zero | PE File Signature | binaries (upload) |
| info | PNG_Format_Zero | PNG Format | binaries (download) |
| info | Win_Backdoor_AsyncRAT_Zero | Win Backdoor AsyncRAT | binaries (download) |
| info | Win_Backdoor_AsyncRAT_Zero | Win Backdoor AsyncRAT | binaries (upload) |
Suricata ids
ET INFO TLS Handshake Failure
SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
PE API
IAT(Import Address Table) is none
EAT(Export Address Table) is none
EAT(Export Address Table) is none