ScreenShot
| Created | 2023.03.23 18:27 | Machine | s1_win7_x6403 |
| Filename | nettaskcipher.exe | ||
| Type | PE32 executable (GUI) Intel 80386 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) | 53 detected (AIDetectNet, Zilla, malicious, high confidence, score, Artemis, unsafe, MSILZilla, Save, MalwareX, confidence, 100%, Eldorado, Attribute, HighConfidence, Vmhl, SiggenNET, R03BC0PBP23, Generic Dropper, moderate, AGEN, GrayWare, Wacapew, Wacatac, SiRAT, Detected, ZemsilF, dm0@a8Q@8Gb, ai score=85, AgentTesla, CLASSIC, NhIM5b1iNrY, Static AI, Malicious PE, susgen, Chgt) | ||
| md5 | 64557121d459383777f4c4f5c611e59b | ||
| sha256 | 415368c42994976a96d870c801364a58a56ace26be19dab123bb0c45f788c105 | ||
| ssdeep | 1536:5MZ6O2pAM4xs2P0IK5us4o9Fb2WPsM+Ofnxcx4v:Tj2PVK5us4o9FlPsM+OZ | ||
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 | ||
| impfuzzy | 3:rGsLdAIEK:tf | ||
Network IP location
Signature (24cnts)
| Level | Description |
|---|---|
| danger | File has been identified by 53 AntiVirus engines on VirusTotal as malicious |
| danger | Connects to an IP address that is no longer responding to requests (legitimate services will remain up-and-running usually) |
| watch | A process performed obfuscation on information about the computer or sent it to a remote location indicative of CnC Traffic/Preperations. |
| watch | Attempts to create or modify system certificates |
| watch | Creates a suspicious Powershell process |
| 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 shortcut to an executable file |
| notice | Creates a suspicious process |
| notice | Creates executable files on the filesystem |
| notice | HTTP traffic contains suspicious features which may be indicative of malware related traffic |
| notice | Looks up the external IP address |
| notice | Performs some HTTP requests |
| 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 |
| info | Uses Windows APIs to generate a cryptographic key |
Rules (10cnts)
| Level | Name | Description | Collection |
|---|---|---|---|
| warning | Generic_Malware_Zero | Generic Malware | binaries (download) |
| warning | Generic_Malware_Zero | Generic Malware | binaries (upload) |
| watch | Antivirus | Contains references to security software | binaries (download) |
| watch | Antivirus | Contains references to security software | binaries (upload) |
| watch | UPX_Zero | UPX packed file | binaries (upload) |
| info | Is_DotNET_EXE | (no description) | binaries (upload) |
| info | IsPE32 | (no description) | binaries (upload) |
| info | OS_Processor_Check_Zero | OS Processor Check | binaries (upload) |
| info | PE_Header_Zero | PE File Signature | binaries (upload) |
| info | Win_Backdoor_AsyncRAT_Zero | Win Backdoor AsyncRAT | binaries (upload) |
Network (8cnts) ?
Suricata ids
ET INFO DNS Query to a *.ngrok domain (ngrok.io)
SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
ET POLICY External IP Lookup ip-api.com
SSLBL: Malicious JA3 SSL-Client Fingerprint detected (Tofsee)
ET POLICY External IP Lookup ip-api.com
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