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Windows
Analysis Report
Siirtokuitti_006703.exe
Overview
General Information
Detection
FormBook, GuLoader
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)
Antivirus detection for URL or domain
Yara detected GuLoader
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
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Performs DNS queries to domains with low reputation
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)
Tries to harvest and steal browser information (history, passwords, etc)
Uses 32bit PE files
Yara signature match
One or more processes crash
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
Internet Provider seen in connection with other malware
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
Contains functionality to dynamically determine API calls
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
Enables debug privileges
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)
Sample file is different than original file name gathered from version info
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Checks if the current process is being debugged
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)
Contains functionality for read data from the clipboard
Classification
- System is w10x64native
- Siirtokuitti_006703.exe (PID: 6032 cmdline:
C:\Users\u ser\Deskto p\Siirtoku itti_00670 3.exe MD5: 917202E098F68D9B97DB1A1F685E8D39) - Siirtokuitti_006703.exe (PID: 8416 cmdline:
C:\Users\u ser\Deskto p\Siirtoku itti_00670 3.exe MD5: 917202E098F68D9B97DB1A1F685E8D39) - mstsc.exe (PID: 8528 cmdline:
C:\Windows \SysWOW64\ mstsc.exe MD5: B038F39C887BE2A810E20B08613F3B84) - RAVCpl64.exe (PID: 7528 cmdline:
"C:\Progra m Files\Re altek\Audi o\HDA\RAVC pl64.exe" -s MD5: 731FB4B2E5AFBCADAABB80D642E056AC) - explorer.exe (PID: 5200 cmdline:
C:\Windows \Explorer. EXE MD5: 5EA66FF5AE5612F921BC9DA23BAC95F7) - firefox.exe (PID: 8968 cmdline:
C:\Program Files\Moz illa Firef ox\Firefox .exe MD5: FA9F4FC5D7ECAB5A20BF7A9D1251C851) - WerFault.exe (PID: 9068 cmdline:
C:\Windows \system32\ WerFault.e xe -u -p 8 968 -s 120 MD5: 5C06542FED8EE68994D43938E7326D75)
- 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. |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
CloudEyE, GuLoader | CloudEyE (initially named GuLoader) is a small VB5/6 downloader. It typically downloads RATs/Stealers, such as Agent Tesla, Arkei/Vidar, Formbook, Lokibot, Netwire and Remcos, often but not always from Google Drive. The downloaded payload is xored. | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Click to see the 8 entries |
⊘No Sigma rule has matched
Timestamp: | 192.168.11.2023.104.137.18549834802031453 05/30/23-11:12:12.677490 |
SID: | 2031453 |
Source Port: | 49834 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2084.32.84.3249805802031453 05/30/23-11:10:30.779905 |
SID: | 2031453 |
Source Port: | 49805 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749781802031412 05/30/23-11:09:09.951790 |
SID: | 2031412 |
Source Port: | 49781 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20185.106.208.349858802031412 05/30/23-11:13:32.368611 |
SID: | 2031412 |
Source Port: | 49858 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2023.104.137.18549834802031412 05/30/23-11:12:12.677490 |
SID: | 2031412 |
Source Port: | 49834 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749842802031453 05/30/23-11:12:39.001168 |
SID: | 2031453 |
Source Port: | 49842 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749781802031453 05/30/23-11:09:09.951790 |
SID: | 2031453 |
Source Port: | 49781 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20154.84.88.10849813802031449 05/30/23-11:10:58.323973 |
SID: | 2031449 |
Source Port: | 49813 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20185.106.208.349858802031453 05/30/23-11:13:32.368611 |
SID: | 2031453 |
Source Port: | 49858 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20154.84.88.10849813802031412 05/30/23-11:10:58.323973 |
SID: | 2031412 |
Source Port: | 49813 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2023.104.137.18549773802031453 05/30/23-11:08:43.535354 |
SID: | 2031453 |
Source Port: | 49773 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20154.84.88.10849813802031453 05/30/23-11:10:58.323973 |
SID: | 2031453 |
Source Port: | 49813 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20185.106.208.349797802031449 05/30/23-11:10:04.022859 |
SID: | 2031449 |
Source Port: | 49797 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749842802031412 05/30/23-11:12:39.001168 |
SID: | 2031412 |
Source Port: | 49842 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2023.104.137.18549773802031412 05/30/23-11:08:43.535354 |
SID: | 2031412 |
Source Port: | 49773 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2084.32.84.3249805802031412 05/30/23-11:10:30.779905 |
SID: | 2031412 |
Source Port: | 49805 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749781802031449 05/30/23-11:09:09.951790 |
SID: | 2031449 |
Source Port: | 49781 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20185.106.208.349858802031449 05/30/23-11:13:32.368611 |
SID: | 2031449 |
Source Port: | 49858 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.201.1.1.161774532023883 05/30/23-11:07:53.444374 |
SID: | 2023883 |
Source Port: | 61774 |
Destination Port: | 53 |
Protocol: | UDP |
Classtype: | Potentially Bad Traffic |
Timestamp: | 192.168.11.20185.106.208.349797802031412 05/30/23-11:10:04.022859 |
SID: | 2031412 |
Source Port: | 49797 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2023.104.137.18549773802031449 05/30/23-11:08:43.535354 |
SID: | 2031449 |
Source Port: | 49773 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2023.104.137.18549834802031449 05/30/23-11:12:12.677490 |
SID: | 2031449 |
Source Port: | 49834 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20185.106.208.349797802031453 05/30/23-11:10:04.022859 |
SID: | 2031453 |
Source Port: | 49797 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.20130.185.109.7749842802031449 05/30/23-11:12:39.001168 |
SID: | 2031449 |
Source Port: | 49842 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.11.2084.32.84.3249805802031449 05/30/23-11:10:30.779905 |
SID: | 2031449 |
Source Port: | 49805 |
Destination Port: | 80 |
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: | |||
Source: | Virustotal: | Perma Link |
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Source: | Static PE information: |
Source: | Registry value created: | Jump to behavior |
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Source: | Code function: | 1_2_004066F3 | |
Source: | Code function: | 1_2_00405ABE | |
Source: | Code function: | 1_2_00402862 | |
Source: | Code function: | 5_2_00343470 | |
Source: | Code function: | 5_2_003435A5 |
Source: | Code function: | 5_2_00338E50 | |
Source: | Code function: | 5_2_00338E2F | |
Source: | Code function: | 5_2_00334E06 |
Networking |
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Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Domain query: | |||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior | ||
Source: | Network Connect: | Jump to behavior |
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