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Windows
Analysis Report
GCeHcfCef8.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)
Yara detected AntiVM3
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Snort IDS alert for network traffic
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Machine Learning detection for sample
Modifies the prolog of user mode functions (user mode inline hooks)
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
.NET source code contains method to dynamically call methods (often used by packers)
Queues an APC in another process (thread injection)
.NET source code contains very large array initializations
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
Found decision node followed by non-executed suspicious APIs
Queries the volume information (name, serial number etc) of a device
Yara signature match
May sleep (evasive loops) to hinder dynamic analysis
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
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
Contains long sleeps (>= 3 min)
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
Contains functionality to read the PEB
Checks if the current process is being debugged
Binary contains a suspicious time stamp
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)
Classification
- System is w10x64
- GCeHcfCef8.exe (PID: 6280 cmdline:
C:\Users\u ser\Deskto p\GCeHcfCe f8.exe MD5: 841031A37159398B8EEBCA7BB7EFF56B) - GCeHcfCef8.exe (PID: 7052 cmdline:
C:\Users\u ser\Deskto p\GCeHcfCe f8.exe MD5: 841031A37159398B8EEBCA7BB7EFF56B) - explorer.exe (PID: 2592 cmdline:
C:\Windows \Explorer. EXE MD5: 662F4F92FDE3557E86D110526BB578D5) - cmmon32.exe (PID: 5656 cmdline:
C:\Windows \SysWOW64\ cmmon32.ex e MD5: DEC326E5B4D23503EA5176878DDDB683) - cmd.exe (PID: 6380 cmdline:
/c del "C: \Users\use r\Desktop\ GCeHcfCef8 .exe" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 1104 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.nightoracle.com/rs10/"], "decoy": ["starryallure.com", "mania-31.online", "baba-bt-top1.buzz", "jwilkinsartscapeinc.com", "tallerhazop.com", "lulu013.com", "pontoimediato.com", "stmc-company.com", "thesoftwarepractitioner.com", "makemoneywithsherrie.com", "algaroba.com", "smartbookmarks.info", "burneysaw.com", "fftsxxx.top", "hvr998.com", "sofisticars.store", "clickit.fun", "couches-sofas-16683.bond", "ikkasolutions.com", "oakvisa.com", "totalkfood.com", "guillaumecarreau.com", "biomagnetismocolombia.com", "jrszhiboz.com", "rewmio.xyz", "willowliy.com", "calm-plants.com", "robertjamesfineclothing.com", "wgardsgm.live", "dngbdk9jpusxpwr.com", "slycepicklegear.com", "mtauratarnt.com", "simolified.com", "mekkamochi.com", "deeprootedleader.com", "container-houses-vn.click", "roundaboutlogistics.com", "m-baer.com", "electric-cars-19095.bond", "destinydinos.com", "taxretentionstrategiesgroup.com", "zg9tywlubmftzw5ldzi0mdm.com", "cleaning-products-29334.bond", "metaastrologia.com", "practicaloutsource.com", "w1nb74.top", "just-one.info", "cryptarrow.com", "omarshafie.online", "latitudeinformatics.com", "fhstbanknigeria.com", "hdlive7.live", "laserhairremovalkit.com", "into-org.com", "kzjsm.com", "juara102-azura.com", "digitsum.com", "cabins-prefab.online", "allisonparlinart.com", "cpsgrantstream.com", "everythingbutthetruck.com", "w6k3v.com", "alfarizkigrup.com", "gs3ekdj3ixe.asia"]}
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 24 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: | 192.168.2.1135.186.223.18049714802031412 10/24/23-08:28:29.857367 |
SID: | 2031412 |
Source Port: | 49714 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.11104.19.157.2349717802031412 10/24/23-08:29:30.721718 |
SID: | 2031412 |
Source Port: | 49717 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.1123.227.38.7449718802031412 10/24/23-08:29:51.038616 |
SID: | 2031412 |
Source Port: | 49718 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.113.33.130.19049716802031412 10/24/23-08:29:11.748633 |
SID: | 2031412 |
Source Port: | 49716 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.11104.247.82.5149723802031412 10/24/23-08:31:16.668472 |
SID: | 2031412 |
Source Port: | 49723 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.11103.224.212.21249713802031412 10/24/23-08:28:09.457640 |
SID: | 2031412 |
Source Port: | 49713 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.11103.224.212.21049721802031412 10/24/23-08:30:33.279150 |
SID: | 2031412 |
Source Port: | 49721 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.11104.21.69.17449722802031412 10/24/23-08:30:53.443055 |
SID: | 2031412 |
Source Port: | 49722 |
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: | Code function: | 2_2_00416CEB | |
Source: | Code function: | 4_2_00416CEB |
Networking |
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Source: | Network Connect: | Jump to behavior | ||
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