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Windows
Analysis Report
5tCYPTkM6b.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
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
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Machine Learning detection for sample
Performs DNS queries to domains with low reputation
Self deletion via cmd delete
Injects a PE file into a foreign processes
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Queues an APC in another process (thread injection)
Tries to detect virtualization through RDTSC time measurements
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Uses 32bit PE files
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
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)
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Found inlined nop instructions (likely shell or obfuscated code)
Sample file is different than original file name gathered from version info
Drops PE files
Contains functionality to read the PEB
Checks if the current process is being debugged
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
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 w10x64
- 5tCYPTkM6b.exe (PID: 4904 cmdline:
"C:\Users\ user\Deskt op\5tCYPTk M6b.exe" MD5: C2CA2BA9C38EB02217588662717BA6C3) - 5tCYPTkM6b.exe (PID: 5880 cmdline:
"C:\Users\ user\Deskt op\5tCYPTk M6b.exe" MD5: C2CA2BA9C38EB02217588662717BA6C3) - explorer.exe (PID: 3292 cmdline:
C:\Windows \Explorer. EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D) - control.exe (PID: 6932 cmdline:
C:\Windows \SysWOW64\ control.ex e MD5: 40FBA3FBFD5E33E0DE1BA45472FDA66F) - cmd.exe (PID: 6980 cmdline:
/c del "C: \Users\use r\Desktop\ 5tCYPTkM6b .exe" MD5: F3BDBE3BB6F734E357235F4D5898582D) - conhost.exe (PID: 6988 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
- cleanup
{"C2 list": ["www.dreamschools.online/b80i/"], "decoy": ["yixuan5.com", "jiazheng369.com", "danielleefelipe.net", "micorgas.com", "uvywah.com", "nbjcgl.com", "streets4suites.com", "hempgotas.com", "postmoon.xyz", "gaboshoes.com", "pastodwes.com", "libes.asia", "damusalama.com", "youngliving1.com", "mollyagee.com", "branchwallet.com", "seebuehnegoerlitz.com", "inventors.community", "teentykarm.quest", "927291.com", "wohn-union.info", "rvmservices.com", "cuanquotex.online", "buysubarus.com", "360e.group", "markham.condos", "carriewilliamsinc.com", "ennitec.com", "wildberryhair.com", "trulyrun.com", "pinkandgrey.info", "mnselfservice.com", "gabtomenice.com", "2thpolis.com", "standardcrypro.com", "58lif.com", "ir-hasnol.com", "ggsega.xyz", "tipslowclever.rest", "atlasgrpltdgh.com", "4338agnes.com", "hillsncreeks.com", "pentest.ink", "cevichiles.com", "evodoge.com", "gooooooo.xyz", "ehaszthecarpetbagger.com", "finanes.xyz", "zoharfine.com", "viperiastudios.com", "sjljtzsls.com", "frentags.art", "mediafyagency.com", "faydergayremezdayener.net", "freelance-rse.com", "quickmovecourierservices.com", "lexingtonprochoice.com", "farmacymerchants.com", "inkland-tattoo.com", "aloebiotics.com", "rampi6.com", "bookinggroningen.com", "wilkinsutotint.com", "inslidr.com"]}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
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 | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Click to see the 28 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
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 | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Click to see the 22 entries |
⊘No Sigma rule has matched
Click to jump to signature section
Show All Signature Results
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