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Windows
Analysis Report
RN# D7521-RN-00353 REV-2.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Malicious sample detected (through community Yara rule)
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
.NET source code references suspicious native API functions
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 sample
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
Queues an APC in another process (thread injection)
Sigma detected: Wab/Wabmig Unusual Parent Or Child Processes
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
AV process strings found (often used to terminate AV products)
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
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
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
May sleep (evasive loops) to hinder dynamic analysis
One or more processes crash
PE file does not import any functions
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- RN# D7521-RN-00353 REV-2.exe (PID: 6796 cmdline:
"C:\Users\ user\Deskt op\RN# D75 21-RN-0035 3 REV-2.ex e" MD5: C001445A0C5BADFFEFE083FE87340CED) - wab.exe (PID: 6916 cmdline:
"C:\Progra m Files (x 86)\Window s Mail\wab .exe" MD5: 251E51E2FEDCE8BB82763D39D631EF89) - uIklAoJgpkP.exe (PID: 3196 cmdline:
"C:\Progra m Files (x 86)\xMTNUw HQkrAETKAt NDqDEHOgjB wWiRwPzmBR VIWIhFMClG yOYqfJAtaC rYmwMXlmIj kSNlfAlbxd tf\uIklAoJ gpkP.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - auditpol.exe (PID: 4008 cmdline:
"C:\Window s\SysWOW64 \auditpol. exe" MD5: 70DF7973F8D4AAA2EE3B28391239397B) - uIklAoJgpkP.exe (PID: 1748 cmdline:
"C:\Progra m Files (x 86)\xMTNUw HQkrAETKAt NDqDEHOgjB wWiRwPzmBR VIWIhFMClG yOYqfJAtaC rYmwMXlmIj kSNlfAlbxd tf\uIklAoJ gpkP.exe" MD5: 32B8AD6ECA9094891E792631BAEA9717) - firefox.exe (PID: 4420 cmdline:
"C:\Progra m Files\Mo zilla Fire fox\Firefo x.exe" MD5: C86B1BE9ED6496FE0E0CBE73F81D8045) - wab.exe (PID: 6944 cmdline:
"C:\Progra m Files (x 86)\Window s Mail\wab .exe" MD5: 251E51E2FEDCE8BB82763D39D631EF89) - WerFault.exe (PID: 7152 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 6 796 -s 102 0 MD5: FD27D9F6D02763BDE32511B5DF7FF7A0)
- 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 | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Click to see the 14 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
|
System Summary |
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Source: | Author: Nasreddine Bencherchali (Nextron Systems): |
Timestamp | SID | Severity | Classtype | Source IP | Source Port | Destination IP | Destination Port | Protocol |
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2024-09-26T14:23:50.378242+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49742 | 147.92.40.174 | 80 | TCP |
2024-09-26T14:24:22.814280+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49747 | 203.161.43.245 | 80 | TCP |
2024-09-26T14:24:35.998820+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49751 | 13.248.169.48 | 80 | TCP |
2024-09-26T14:24:50.074829+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49755 | 44.213.25.70 | 80 | TCP |
2024-09-26T14:25:03.264303+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49759 | 3.33.130.190 | 80 | TCP |
2024-09-26T14:25:16.413058+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49763 | 3.33.130.190 | 80 | TCP |
2024-09-26T14:25:30.879325+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49767 | 103.255.237.233 | 80 | TCP |
2024-09-26T14:25:44.963690+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49771 | 3.33.130.190 | 80 | TCP |
2024-09-26T14:26:08.795017+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49775 | 221.121.144.149 | 80 | TCP |
2024-09-26T14:26:22.261486+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49779 | 85.159.66.93 | 80 | TCP |
2024-09-26T14:26:35.577429+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49783 | 50.3.111.89 | 80 | TCP |
2024-09-26T14:26:56.802703+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49787 | 3.33.130.190 | 80 | TCP |
2024-09-26T14:27:10.357134+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49791 | 13.248.252.114 | 80 | TCP |
2024-09-26T14:27:19.549092+0200 | 2050745 | 1 | Malware Command and Control Activity Detected | 192.168.2.4 | 49792 | 147.92.40.174 | 80 | TCP |
Click to jump to signature section
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