MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce. 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: 10


Intelligence 10 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce
SHA3-384 hash: 7687924e00f69e7126dfe51c56eabefe9c9dfa80dbeffce36ef3782e92b4654ffd3ecf62717c27f41f561449b533d1bb
SHA1 hash: cd4628b586a767b34c1730dbf3a726738cbde617
MD5 hash: 43bf3b91a4615aecaefb7addf915f9fa
humanhash: asparagus-mockingbird-speaker-arizona
File name:RFQ_V40795.pdf.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:711'168 bytes
First seen:2020-10-09 06:14:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:MqJGTjI53gPNxJoLqx40jfnqJ38uS2W8soDfdVuw2MYxXHaquSO7/1:MqJGTygj6LqWOqJ38e7FDdVCxXDuSO7
Threatray 2'373 similar samples on MalwareBazaar
TLSH 01E4E02273D42F95F17EA37995201210A3F1B927E732D78E7EA910DE09A2F81D763712
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: serve0.pcorpgroups.pw
Sending IP: 104.168.202.220
From: Yeongjae <rinno@rinno.co.kr>
Subject: Request for Quotation - V-40795
Attachment: RFQ_V40795.pdf.rar (contains "RFQ_V40795.pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/69423/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/486309
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
Creates an undocumented autostart registry key
Detected FormBook malware
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Sigma detected: Steal Google chrome login data
Sigma detected: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 295602 Sample: RFQ_V40795.pdf.exe Startdate: 09/10/2020 Architecture: WINDOWS Score: 100 55 www.naturalngreens.com 2->55 57 shops.myshopify.com 2->57 59 kankuhydro.myshopify.com 2->59 75 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 Antivirus detection for dropped file 2->79 81 14 other signatures 2->81 11 RFQ_V40795.pdf.exe 3 2->11         started        signatures3 process4 file5 51 C:\Users\user\...\RFQ_V40795.pdf.exe.log, ASCII 11->51 dropped 99 Tries to detect virtualization through RDTSC time measurements 11->99 101 Injects a PE file into a foreign processes 11->101 15 RFQ_V40795.pdf.exe 11->15         started        signatures6 process7 signatures8 103 Modifies the context of a thread in another process (thread injection) 15->103 105 Maps a DLL or memory area into another process 15->105 107 Sample uses process hollowing technique 15->107 109 Queues an APC in another process (thread injection) 15->109 18 explorer.exe 6 15->18 injected process9 dnsIp10 61 www.kayfg.xyz 162.0.238.19, 49743, 80 NAMECHEAP-NETUS Canada 18->61 63 willb-ruthless.com 160.153.136.3, 49748, 49749, 49750 GODADDY-AMSDE United States 18->63 65 3 other IPs or domains 18->65 43 C:\Users\user\AppData\...\wzvh0jd-z7l.exe, PE32 18->43 dropped 45 C:\Program Files (x86)\T-zy\wzvh0jd-z7l.exe, PE32 18->45 dropped 83 System process connects to network (likely due to code injection or exploit) 18->83 85 Benign windows process drops PE files 18->85 23 systray.exe 1 18 18->23         started        27 wzvh0jd-z7l.exe 3 18->27         started        29 cmmon32.exe 18->29         started        file11 signatures12 process13 file14 47 C:\Users\user\AppData\...\28Mlogrv.ini, data 23->47 dropped 49 C:\Users\user\AppData\...\28Mlogri.ini, data 23->49 dropped 87 Detected FormBook malware 23->87 89 Creates an undocumented autostart registry key 23->89 91 Tries to steal Mail credentials (via file access) 23->91 97 3 other signatures 23->97 31 cmd.exe 2 23->31         started        35 cmd.exe 1 23->35         started        93 Injects a PE file into a foreign processes 27->93 37 wzvh0jd-z7l.exe 27->37         started        95 Tries to detect virtualization through RDTSC time measurements 29->95 signatures15 process16 file17 53 C:\Users\user\AppData\Local\Temp\DB1, SQLite 31->53 dropped 67 Tries to harvest and steal browser information (history, passwords, etc) 31->67 39 conhost.exe 31->39         started        41 conhost.exe 35->41         started        69 Modifies the context of a thread in another process (thread injection) 37->69 71 Maps a DLL or memory area into another process 37->71 73 Sample uses process hollowing technique 37->73 signatures18 process19
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2020-10-09 00:47:47 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=t4zvxk3syavm6a43ya3gcrpigjrqgr5b2fa52gxhnbrx4uvbu7ha._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
23b880c48fec41fa4fc337f0ecb3d9cd5ee8f71cd45448049a35bbcb85bb01f5
FormBook
2467572968320c67ea46c765d9cdae94d3887e44d7af7e29b88f1b0e51fa4c01
FormBook
2ead77594bc7d6fb376764fad896f830955a1ac70155c0f9feb42299f5c788a9
FormBook
4f90d42980450652ef19fe55ebea9e68683b4d29027900dcbeb5c26d298318fc
FormBook
52a3e59905cc8e33bc33223e1b55482b484c6e04d7795a7329946a77502e950d
FormBook
693c8d97b8f35a60fbe94951bcc62bfe7d98631591382a2a86300546c6fa95d0
FormBook
a4f595a974ae8b5dc406b75aebfb8f6d44ac822b14c8ba0619f0416a55be3986
FormBook
ad660d774f78137622d038976557c8782211dbfd39d2ff9a7a4bcc9279ba0f41
FormBook
d5b7a34c6294b2505366e81e4bcaa48943ddc338a1f78ae8f990e3dcf413182a
FormBook
f22a0b5b12687ae12b9f4d625d82a16562bce5e1b03b7d7372df3813e5afc8e5
FormBook
+ 2'363 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook persistence
Link:
https://tria.ge/reports/201009-svadvcl5xe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Modifies Internet Explorer settings
Drops file in Program Files directory
Suspicious use of SetThreadContext
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.kayfg.xyz/zvf/
Unpacked files
SH256 hash:
9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce
MD5 hash:
43bf3b91a4615aecaefb7addf915f9fa
SHA1 hash:
cd4628b586a767b34c1730dbf3a726738cbde617
Link:
https://www.unpac.me/results/6deb1f1d-8939-4561-9685-20e49bdce58e/
SH256 hash:
13b24d3a09d099dabe41cd6cd71607a77e14640b1e9b4ed2d60f6c012f191c43
MD5 hash:
109cedae3c384a1913107f1efad2b7c8
SHA1 hash:
1f7f35b0ed85fa12bb839cbce698e59a30813420
Link:
https://www.unpac.me/results/6deb1f1d-8939-4561-9685-20e49bdce58e/
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/9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce

File information

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

Malspam

FormBook

rar 8644eb030e96217a4ce867efd491af5820fbec964ece81dd0d0198ad849cc64f

FormBook

Executable exe 9f335bab72c02acf039bc0366145e832630347a1d141dd1ae768637e52a1a7ce

(this sample)

  
Dropped by
MD5 6e59146b326f28b570a381380058dcce
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/69423/
  
Dropped by
SHA256 8644eb030e96217a4ce867efd491af5820fbec964ece81dd0d0198ad849cc64f

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