Windows
Analysis Report
11001_10032.jse
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected FormBook
.NET source code contains very large strings
AI detected suspicious sample
Allocates memory in foreign processes
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
JavaScript source code contains functionality to generate code involving a shell, file or stream
Machine Learning detection for dropped file
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Performs DNS queries to domains with low reputation
Powershell drops PE file
Queues an APC in another process (thread injection)
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Drops PE files
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Script Initiated Connection
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
wscript.exe (PID: 6268 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\11001 _10032.jse " MD5: A47CBE969EA935BDD3AB568BB126BC80) powershell.exe (PID: 3196 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -NoProfile -Executio nPolicy Re moteSigned -File "C: \Temp\dddd dd.ps1" MD5: 04029E121A0CFA5991749937DD22A1D9) conhost.exe (PID: 3992 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) x.exe (PID: 3548 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\x.exe" MD5: A8E663A472E2702B7446D20CCE906A18) RegAsm.exe (PID: 5104 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) RegAsm.exe (PID: 1396 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) RegAsm.exe (PID: 4960 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) W4ja93oMuuBdSP.exe (PID: 4856 cmdline:
"C:\Progra m Files (x 86)\oPIoyw AvxjAdhHrP AMJPgOJeGj kAHdNwmOzj jyzYQeHXNW flKjessvWG uizcfS\GZV 8lYieC1kMR M.exe" MD5: 9C98D1A23EFAF1B156A130CEA7D2EE3A) sxstrace.exe (PID: 5480 cmdline:
"C:\Window s\SysWOW64 \sxstrace. exe" MD5: 209969CD31095C47FFB25959B10917F3) W4ja93oMuuBdSP.exe (PID: 3808 cmdline:
"C:\Progra m Files (x 86)\oPIoyw AvxjAdhHrP AMJPgOJeGj kAHdNwmOzj jyzYQeHXNW flKjessvWG uizcfS\3vk kebgT.exe" MD5: 9C98D1A23EFAF1B156A130CEA7D2EE3A) firefox.exe (PID: 2004 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\Firefo x.exe" MD5: C86B1BE9ED6496FE0E0CBE73F81D8045)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Formbook, Formbo | FormBook contains a unique crypter RunPE that has unique behavioral patterns subject to detection. It was initially called "Babushka Crypter" by Insidemalware. |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 4 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security |
System Summary |
---|
Source: | Author: frack113, Florian Roth: |
Source: | Author: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: |
Source: | Author: frack113: |
Source: | Author: Michael Haag: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-21T13:18:57.030255+0100 | 2018856 | 1 | A Network Trojan was detected | 108.181.20.35 | 443 | 192.168.2.4 | 49731 | TCP |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2025-01-21T13:18:56.939087+0100 | 2827578 | 1 | A Network Trojan was detected | 192.168.2.4 | 49731 | 108.181.20.35 | 443 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Avira: |
Source: | ReversingLabs: |
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: |
Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | HTTPS traffic detected: |
Source: | Binary string: | ||
Source: | Binary string: | ||
Source: | Binary string: | ||
Source: | Binary string: | ||
Source: | Binary string: |
Source: | Code function: | 8_2_004FC550 |
Software Vulnerabilities |
---|
Source: | Argument value : | Go to definition | ||
Source: | Argument value : | Go to definition | ||
Source: | Argument value : | Go to definition |
Source: | Child: | ||
Source: | Child: |
Source: | Code function: | 8_2_004E9EA0 | |
Source: | Code function: | 8_2_043104CE | |
Source: | Code function: | 12_2_055D3B38 |
Networking |
---|
Source: | Suricata IDS: | ||
Source: | Suricata IDS: |
Source: | Network Connect: | Jump to behavior |
Source: | DNS query: | ||
Source: | DNS query: | ||
Source: | DNS query: |
Source: | IP Address: |
Source: | ASN Name: |
Source: | JA3 fingerprint: |
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: |
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: |
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: | ||
Source: | DNS traffic detected: |
Source: | HTTP traffic detected: |
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: | ||
Source: | HTTP traffic detected: |