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Windows
Analysis Report
i5NDVAFg42.exe
Overview
General Information
| Sample name: | i5NDVAFg42.exerenamed because original name is a hash value |
| Original sample name: | d0b94b855d2f24add1edf6b3a6ecae24e4366f181a1ccd0bcd3b27e94de95bc0.exe |
| Analysis ID: | 1410996 |
| MD5: | 728b83244a275ef0e29cb00aa0c6692c |
| SHA1: | 8f744b5564e78ab054bc685bd12483c1ffd9de4d |
| SHA256: | d0b94b855d2f24add1edf6b3a6ecae24e4366f181a1ccd0bcd3b27e94de95bc0 |
| Tags: | exe |
| Infos: |  |
 | |
Detection
FormBook
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected FormBook
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
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
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found decision node followed by non-executed suspicious APIs
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
PE file does not import any functions
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Tries to load missing DLLs
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
i5NDVAFg42.exe (PID: 3060 cmdline: C:\Users\u ser\Deskto p\i5NDVAFg 42.exe MD5: 728B83244A275EF0E29CB00AA0C6692C) 
explorer.exe (PID: 1028 cmdline: C:\Windows \Explorer. EXE MD5: 662F4F92FDE3557E86D110526BB578D5) - autochk.exe (PID: 4280 cmdline:
C:\Windows \SysWOW64\ autochk.ex e MD5: FC398299F54290D5F35C69E865FD7CC2) - ipconfig.exe (PID: 1772 cmdline:
C:\Windows \SysWOW64\ ipconfig.e xe MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) 
cmd.exe (PID: 2792 cmdline: /c del "C: \Users\use r\Desktop\ i5NDVAFg42 .exe" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 6648 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- 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. |
{"C2 list": ["www.yoursweets.online/vr01/"], "decoy": ["eclipsefoodservice.com", "oregonjobs.co", "ethicai.pro", "frontierconnects.co", "elcaporalburley.com", "exoticskinco.com", "topdeals.biz", "carmensbookstore.com", "mayorii.com", "viewhird.com", "bharatcrimecontrol24news.com", "sampleshubusa.com", "molobeverello.com", "nicholsonflooringservices.com", "kidscircle.shop", "771010.cc", "poseidoncrm.com", "liviafiorelli.com", "flavorfog.online", "xaqh.info", "bombslot-42.co", "floatshop.store", "massagechairspecialists.com", "mks-digital.net", "wti395.vip", "entelnegocio.com", "ansemgram.com", "owletbaby.shop", "skyhut.io", "kakevpn.com", "protectmichildren.net", "gratiasempirellc.com", "hsyxkj.com", "kirtirefrigeration.com", "makeyousurprise.com", "qqixe.shop", "svshop.us", "yesxoit.xyz", "jupitr-claim.top", "laneflowlogistics.com", "brandonbirk.com", "vjll.net", "maturak-na-klic.online", "mingshengglass.com", "theshopsatmaunalani.com", "accidentapp.online", "fertnow.com", "nicolbauer.com", "mym-agency.com", "efxprm.com", "studioenginedemo.com", "erabits.com", "chhpiyg.pro", "adadripdropz.com", "dropperdeals.com", "viphao200.com", "lasik-eye-surgery-45089.bond", "helyibudapest.com", "michellecaldwelldesign.com", "snugandkind.com", "redirect2-userweb.com", "pataltarghya.com", "tumi123ans.lol", "familyofficesheet.com"]}| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
| JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
| Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
| 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 |
|
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
| JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
| Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
| 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 |
| |
| Click to see the 49 entries | ||||
| Source | Rule | Description | Author | Strings |
|---|---|---|---|---|
| JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
| JoeSecurity_FormBook_1 | Yara detected FormBook | Joe Security | ||
| Windows_Trojan_Formbook_1112e116 | unknown | unknown |
| |
| 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 |
| |
| Click to see the 5 entries | ||||
⊘No Sigma rule has matched
| Timestamp: | 03/18/24-14:45:01.182529 |
| SID: | 2031412 |
| Source Port: | 49716 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:43:58.800885 |
| SID: | 2031412 |
| Source Port: | 49713 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:45:21.823978 |
| SID: | 2031412 |
| Source Port: | 49717 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:45:42.018352 |
| SID: | 2031412 |
| Source Port: | 49718 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:43:40.128238 |
| SID: | 2031412 |
| Source Port: | 49712 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:44:20.094348 |
| SID: | 2031412 |
| Source Port: | 49715 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:46:45.274276 |
| SID: | 2031412 |
| Source Port: | 49720 |
| Destination Port: | 80 |
| Protocol: | TCP |
| Classtype: | A Network Trojan was detected |
| Timestamp: | 03/18/24-14:46:05.770153 |
| SID: | 2031412 |
| Source Port: | 49719 |
| 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: | Avira: | ||
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Networking | |
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| Source: | Snort IDS: | ||
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| 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: | URLs: | ||
| Source: | HTTP traffic detected: | ||
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| Source: | UDP traffic detected without corresponding DNS query: | ||
| Source: | UDP traffic detected without corresponding DNS query: | ||
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| Source: | UDP traffic detected without corresponding DNS query: | ||
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| Source: | UDP traffic detected without corresponding DNS query: | ||
| Source: | Code function: | 2_2_0E4D3F82 | |
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