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Windows
Analysis Report
TNT Express Delivery Consignment AWD 87993766479.vbs
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Benign windows process drops PE files
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
VBScript performs obfuscated calls to suspicious functions
Yara detected FormBook
.NET source code contains potential unpacker
AI detected suspicious sample
Allocates memory in foreign processes
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
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)
Potential malicious VBS script found (has network functionality)
Queues an APC in another process (thread injection)
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
Allocates memory with a write watch (potentially for evading sandboxes)
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
Internet Provider seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
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: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
- wscript.exe (PID: 5940 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\TNT E xpress Del ivery Cons ignment AW D 87993766 479.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - payload_Kf7Fb.exe (PID: 3852 cmdline:
"C:\Users\ user\AppDa ta\Local\T emp\payloa d_Kf7Fb.ex e" MD5: 0B6A1AA96FABD02D283FF73044BC1B14) - RegAsm.exe (PID: 6572 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) - RegAsm.exe (PID: 2028 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) - RtAXBNCRrMdm.exe (PID: 2092 cmdline:
"C:\Progra m Files (x 86)\nQVZJf iWcYnxqmRg vBgOjCCxJw lMeiKKpkPA nxypkDSNet fDGOOnMldd EMgbBxSVQo nSy\RtAXBN CRrMdm.exe " MD5: 32B8AD6ECA9094891E792631BAEA9717) - prevhost.exe (PID: 1868 cmdline:
"C:\Window s\SysWOW64 \prevhost. exe" MD5: 79FED29A7F3DF4BA67599EFF3CDB4F1A) - RtAXBNCRrMdm.exe (PID: 6992 cmdline:
"C:\Progra m Files (x 86)\nQVZJf iWcYnxqmRg vBgOjCCxJw lMeiKKpkPA nxypkDSNet fDGOOnMldd EMgbBxSVQo nSy\RtAXBN CRrMdm.exe " MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 6272 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 2 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: Margaritis Dimitrios (idea), Florian Roth (Nextron Systems), oscd.community: |
Source: | Author: Michael Haag: |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
---|---|---|---|---|---|---|---|---|
2024-11-27T19:16:45.160721+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49727 | 172.67.162.12 | 80 | TCP |
2024-11-27T19:16:47.757085+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49732 | 172.67.162.12 | 80 | TCP |
2024-11-27T19:16:50.471686+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49738 | 172.67.162.12 | 80 | TCP |
2024-11-27T19:17:00.374740+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49760 | 38.54.112.227 | 80 | TCP |
2024-11-27T19:17:03.030845+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49766 | 38.54.112.227 | 80 | TCP |
2024-11-27T19:17:05.749412+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49772 | 38.54.112.227 | 80 | TCP |
2024-11-27T19:17:15.593229+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49795 | 172.67.187.114 | 80 | TCP |
2024-11-27T19:17:18.249459+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49801 | 172.67.187.114 | 80 | TCP |
2024-11-27T19:17:20.922209+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49808 | 172.67.187.114 | 80 | TCP |
2024-11-27T19:17:31.827601+0100 | 2855464 | 1 | A Network Trojan was detected | 192.168.2.9 | 49834 | 85.159.66.93 | 80 | TCP |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | ReversingLabs: |
Source: | ReversingLabs: |
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Source: | Integrated Neural Analysis Model: |
Source: | Joe Sandbox ML: |
Source: | Binary string: |
Source: | Code function: | 9_2_00AFCDE0 |
Software Vulnerabilities |
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Source: | Child: |
Source: | Code function: | 9_2_00AE9F90 | |
Source: | Code function: | 9_2_049004CE | |
Source: | Code function: | 12_2_0000015F59C064CE |
Networking |
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