MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 abdcaa24ca253113905e140a11a445eec5f758bd6403ccf805f87be5c30ea4a3. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments
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SHA256 hash: abdcaa24ca253113905e140a11a445eec5f758bd6403ccf805f87be5c30ea4a3
SHA3-384 hash: 05ad699e7436b2684825aca73c1b7a0426a4e97d503604e3acc65463beb327a9b88acdf4e63f7e574ac6a53eb76b41c6
SHA1 hash: 4b25756bedfe52c907c4e41c9ff33cde2d96a2cc
MD5 hash: 85f6afcb5108fc4abb34af4b61165fc3
humanhash: don-solar-mars-oven
File name:fbfilex.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:970'240 bytes
First seen:2020-09-16 12:36:56 UTC
Last seen:2020-09-16 13:40:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:RZnYbRmaxrYQ2VeVROZnYbRmaxrYQ2VeVRa:RlYbtrYQgeVROlYbtrYQgeVRa
Threatray 2'245 similar samples on MalwareBazaar
TLSH A1250108377D5B4AD9B95BF1296C21854BFABDB6B052F36E4CE071CB14B2F018660E63
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
145
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.Trojan.Inject4.1086.4443.7744.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/467862
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates an undocumented autostart registry key
Detected FormBook malware
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses ipconfig to lookup or modify the Windows network settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 286347 Sample: fbfilex.exe Startdate: 16/09/2020 Architecture: WINDOWS Score: 100 52 www.ringroadpartners.com 2->52 54 ringroadpartners.com 2->54 56 www.studioerasmodioses.com 2->56 64 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus detection for dropped file 2->68 70 11 other signatures 2->70 11 fbfilex.exe 3 2->11         started        signatures3 process4 file5 50 C:\Users\user\AppData\...\fbfilex.exe.log, ASCII 11->50 dropped 94 Tries to detect virtualization through RDTSC time measurements 11->94 96 Injects a PE file into a foreign processes 11->96 98 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->98 15 fbfilex.exe 11->15         started        18 fbfilex.exe 11->18         started        signatures6 process7 signatures8 100 Modifies the context of a thread in another process (thread injection) 15->100 102 Maps a DLL or memory area into another process 15->102 104 Sample uses process hollowing technique 15->104 106 Queues an APC in another process (thread injection) 15->106 20 explorer.exe 6 15->20 injected process9 dnsIp10 58 put2cents.com 50.116.84.62, 49729, 49730, 49731 UNIFIEDLAYER-AS-1US United States 20->58 60 13and15whipplerd.com 184.168.131.241, 49725, 80 AS-26496-GO-DADDY-COM-LLCUS United States 20->60 62 3 other IPs or domains 20->62 42 C:\Users\user\AppData\...\update4hg4upu.exe, PE32 20->42 dropped 44 C:\Program Files (x86)\...\update4hg4upu.exe, PE32 20->44 dropped 78 System process connects to network (likely due to code injection or exploit) 20->78 80 Benign windows process drops PE files 20->80 25 msdt.exe 1 17 20->25         started        29 update4hg4upu.exe 3 20->29         started        31 ipconfig.exe 20->31         started        33 autoconv.exe 20->33         started        file11 signatures12 process13 file14 46 C:\Users\user\AppData\...\56Nlogrv.ini, data 25->46 dropped 48 C:\Users\user\AppData\...\56Nlogri.ini, data 25->48 dropped 82 Detected FormBook malware 25->82 84 Creates an undocumented autostart registry key 25->84 86 Tries to steal Mail credentials (via file access) 25->86 92 3 other signatures 25->92 35 cmd.exe 1 25->35         started        88 Injects a PE file into a foreign processes 29->88 37 update4hg4upu.exe 29->37         started        90 Tries to detect virtualization through RDTSC time measurements 31->90 signatures15 process16 signatures17 40 conhost.exe 35->40         started        72 Modifies the context of a thread in another process (thread injection) 37->72 74 Maps a DLL or memory area into another process 37->74 76 Sample uses process hollowing technique 37->76 process18
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/abdcaa24ca253113905e140a11a445eec5f758bd6403ccf805f87be5c30ea4a3/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-09-16 10:36:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
42
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vpokujgkeuyrhec6cqfbdjcf53c7owf5mqb4z6af7b56lqyousrq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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0de7b2b7c4e9974b9343de9666287a7137614cbcffc5f89932601b503712002a
Formbook
1d433633d08421004a24c04b8a6a05b9c19afde22e6869c82f9cbe6aaad568fd
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4f90d42980450652ef19fe55ebea9e68683b4d29027900dcbeb5c26d298318fc
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52a3e59905cc8e33bc33223e1b55482b484c6e04d7795a7329946a77502e950d
Formbook
a05ae5c56a5a5c24f2c7276f2c669cb33c09f87d75a09030b094f12a4a1a17fa
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ad660d774f78137622d038976557c8782211dbfd39d2ff9a7a4bcc9279ba0f41
Formbook
b2a437bec36856a90558f9f54873096e6d1324cf487cc265038dbe82e5b03788
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b3423777b1bafbe661edd1f4d3d98e72fcb48394764ddeb57bb913b881cf9177
Formbook
ef19177bdff9d49a09dd7010e58fd81029d5f8e2d54abb053575604c2fc219ed
Formbook
+ 2'235 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat persistence spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/200916-m31anvq3ws/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.dreamxx2.com/nm8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/abdcaa24ca253113905e140a11a445eec5f758bd6403ccf805f87be5c30ea4a3

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:crime_win32_ransom_avaddon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819

File information

The table below shows additional information about this malware sample such as delivery method and external references.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/62059/
  
URLhaus
https://urlhaus.abuse.ch/url/532359/

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