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Windows
Analysis Report
SecuriteInfo.com.Trojan.DownloaderNET.346.3836.25977.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
System process connects to network (likely due to code injection or exploit)
Snort IDS alert for network traffic
Sample uses process hollowing technique
Tries to steal Mail credentials (via file / registry access)
Maps a DLL or memory area into another process
Writes to foreign memory regions
.NET source code references suspicious native API functions
Machine Learning detection for sample
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Queues an APC in another process (thread injection)
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Contains long sleeps (>= 3 min)
Enables debug privileges
Found inlined nop instructions (likely shell or obfuscated code)
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
PE / OLE file has an invalid certificate
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
- System is w10x64
- SecuriteInfo.com.Trojan.DownloaderNET.346.3836.25977.exe (PID: 5148 cmdline:
C:\Users\u ser\Deskto p\Securite Info.com.T rojan.Down loaderNET. 346.3836.2 5977.exe MD5: 3E26DD2EF6DC0BE5838E1EAC6B668846) - aspnet_compiler.exe (PID: 5020 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\aspn et_compile r.exe MD5: 17CC69238395DF61AAF483BCEF02E7C9) - explorer.exe (PID: 3528 cmdline:
C:\Windows \Explorer. EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D) - wlanext.exe (PID: 644 cmdline:
C:\Windows \SysWOW64\ wlanext.ex e MD5: CD1ED9A48316D58513D8ECB2D55B5C04)
- cleanup
{"C2 list": ["www.suatvthainguyen.buzz/obc0/"], "decoy": ["ZjclkfTy1nqU", "sXZhy2crEuB/rUzSxLptDVNcNzQ=", "ck1FI0gC5KFwF/D9Yj46lPTa6w==", "42k+tkDixYLj8Hj2JLnoXA==", "Xi/Fcx2+VzH7oQ==", "ALWQcoIm9qi/ysm3c+AzBYQg", "zVYi9iHnwoyWJ+MIvGIbdrI74w==", "l2InDjHPqT780JFZtA==", "YC0RHirarHuVp6OTGhwwxbptEGEJEQ==", "BqRbKUgCz2VHR0lbEKy2Uw==", "YP/p7RGcfw9DYfARrYU=", "HMe4sMZsRwfYURFhGf2KnLBYIl/JBnI=", "kDEcbvuuhSSocC3r", "BdnGTpee8ePq9wv0", "YTYa+yXDhh7qvEelWkDrQw==", "FZtkxWUvtmmd", "t1gxeQHbaxdQWy6poRYw", "1GMUbRrIvozjhn0=", "ONzHsuOGV/A2WjHsuh4ylPTa6w==", "UAXYR+uRahqUYTfy", "yW5rd6RWLvbxExj6", "+J0nwloF8OXkBvmHUjbiAIsY/A==", "XhkE/wmrdT1A36bu6KKqSw==", "FufczeuGYec2XzfbTLj5UQvpa77X", "23UigCjyz4XcAwYW6KKqSw==", "qzcKtebzgzOE", "B+3m2M9r++2wV2o=", "Jbpx3H4q+b1JbC+poRYw", "Pffk3QHjiSmA", "BrafEas+GNIzYi+poRYw", "76WG3W8m7PhDYyGwHZM=", "chrNLrdTM9kdMM9PMQy3Xg7pa77X", "EOXXx+WRgAlKcwL2sB8y", "e0Mf7AWRZESOHh2uoY0=", "avnSV6iVbC+C", "R8qfK9SKUQtjeE2xXMDrXA==", "T9/FvuGkOh8rIu2KD4GczAjP4Q==", "E9/Nx+N/bxsMp2wKvpg=", "jkEsLkbqtoBQ8fNmDOSElPTa6w==", "U/PXpqxaO/BzfTCpoRYw", "FqF18phGFMMTcB0VoQ==", "o0z7avaUfA8zRwjyvGIbdrI74w==", "YBn0UbinaBQ=", "v3thnk4vtmmd", "Ten3JNj1TzgxvA==", "pXlWtkbo2Z00FRr7vzc4", "WOeT8Hwr/NCXdje7qpA=", "bQfu0/WsiRlZYlRwU8IpB5c7CR/f", "gyvOROz6VzH7oQ==", "aiPWqL1wQ+CnQ/C2q5I=", "YP3ZxOCTXzy3UD+9qZA=", "lTb5zNZ0//0Gqw==", "fRr52wfBmCeeKTmTU33kL2A=", "aBf9ys6adxQcfoX4pg==", "oYU7DB7Lmjq31qNGwX3kL2A=", "WwXw1uypllIesTy3ZWZ6KHQ=", "bfWqgpVFG/6LGNMa0Ly8VA==", "ILKPjrJkNt6Pbj7Qwpo=", "6cO7NuzffDWF", "74hbz30nEZ090qHFMRgulPTa6w==", "yZ+LkIUvDNsxlVg88mBykhbpa77X", "PRHeRpKb8ePq9wv0", "LPzp1uy0mFiuXW4=", "uVYsoirSnJjjc3c="]}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
| |
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Click to see the 18 entries |
⊘No Sigma rule has matched
Timestamp: | 144.76.136.153192.168.2.4443497002018856 10/11/22-05:55:40.046635 |
SID: | 2018856 |
Source Port: | 443 |
Destination Port: | 49700 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | ReversingLabs: |
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Source: | Code function: | 3_2_00172D50 | |
Source: | Code function: | 3_2_00172D49 |
Source: | Code function: | 0_2_00AA2C95 | |
Source: | Code function: | 0_2_00AA02E0 | |
Source: | Code function: | 0_2_00AA28C4 | |
Source: | Code function: | 0_2_00AA22DC | |
Source: | Code function: | 0_2_00AA0304 | |
Source: | Code function: | 0_2_00AA031C | |
Source: | Code function: | 3_2_00168950 | |
Source: | Code function: | 3_2_0016894F |
Networking |
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