MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922
SHA3-384 hash: 133be88def3ba3bb21b0c2659c85645ec5131f5bed124ad37f349530b9a42ef2af26d7f6006a66945157ff9a46ff6075
SHA1 hash: 8e9f7a81a64910578e864989b944d378c6fe5f13
MD5 hash: 88ebf5f77bf1a7c384d267e077c2cc7e
humanhash: uranus-seven-black-washington
File name:VBYynD0ygF6pxhQ.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:743'424 bytes
First seen:2020-10-08 12:28:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:o8WGnh8tHSXI+xN3vh7hoA8LzVP4fVVFyyYne1NvMqHeiTc47/k:o+nh89SY+H3vL+XqHIBe1NEq+iTv
Threatray 2'380 similar samples on MalwareBazaar
TLSH 16F4120521B8621FD42E4FFB91E9851053B79E23A46DE74ABEF4B0E72A337440491FA7
Reporter abuse_ch
Tags:exe FormBook Yahoo


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: sonic308-10.consmr.mail.ne1.yahoo.com
Sending IP: 66.163.187.33
From: sales sale <ssale7257@yahoo.com>
Subject: : Fwd: Wire Transfer Payment
Attachment: USDE9749.rar (contains "VBYynD0ygF6pxhQ.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
104
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/69211/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/485351
Signature
Antivirus detection for URL or domain
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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)
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: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
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 netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 295134 Sample: VBYynD0ygF6pxhQ.exe Startdate: 08/10/2020 Architecture: WINDOWS Score: 100 48 www.www423337.com 2->48 50 ethsvsvfykewweg.nghngdfeertb7777cucuo.com 2->50 58 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for URL or domain 2->62 64 12 other signatures 2->64 11 VBYynD0ygF6pxhQ.exe 6 2->11         started        signatures3 process4 file5 40 C:\Users\user\AppData\Roaming\UWbanbnk.exe, PE32 11->40 dropped 42 C:\Users\user\AppData\Local\...\tmpE74E.tmp, XML 11->42 dropped 44 C:\Users\user\...\VBYynD0ygF6pxhQ.exe.log, ASCII 11->44 dropped 76 Tries to detect virtualization through RDTSC time measurements 11->76 78 Injects a PE file into a foreign processes 11->78 80 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->80 15 VBYynD0ygF6pxhQ.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 82 Modifies the context of a thread in another process (thread injection) 15->82 84 Maps a DLL or memory area into another process 15->84 86 Sample uses process hollowing technique 15->86 88 Queues an APC in another process (thread injection) 15->88 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 52 myeducationnoodle.com 34.102.136.180, 49742, 49743, 49744 GOOGLEUS United States 20->52 54 balancer.wixdns.net 35.242.251.130, 49745, 49746, 49747 GOOGLEUS United States 20->54 56 4 other IPs or domains 20->56 66 System process connects to network (likely due to code injection or exploit) 20->66 26 netsh.exe 18 20->26         started        signatures11 process12 file13 36 C:\Users\user\AppData\...\O95logrv.ini, data 26->36 dropped 38 C:\Users\user\AppData\...\O95logri.ini, data 26->38 dropped 68 Detected FormBook malware 26->68 70 Tries to steal Mail credentials (via file access) 26->70 72 Tries to harvest and steal browser information (history, passwords, etc) 26->72 74 3 other signatures 26->74 30 cmd.exe 2 26->30         started        signatures14 process15 file16 46 C:\Users\user\AppData\Local\Temp\DB1, SQLite 30->46 dropped 90 Tries to harvest and steal browser information (history, passwords, etc) 30->90 34 conhost.exe 30->34         started        signatures17 process18
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-08 06:43:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=joqna7jsybebieiagf7zlpln3c3zdou4myehgc4ebbjqjefbhera._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07528f3c583c546d2b444b091c3ede380c6427ed0691b95294c7e32dd35560ab
FormBook
1d1c9ee0b1adaa5a121fd70d332785395ad22538f9cdc7db44414c1604e28919
FormBook
1e1a825c158fefa17df9237a4be60bc99e1a2a42ded631c8636b6af668b1627f
FormBook
30bbf2043054b92e495bbd55f67e43b8eafce430bf31d8aaa4899385e503cdbe
FormBook
7543c6fd163cc67f5bf477b5b583bfca5c094e65c6a5d5dea56e3eeb333b1cad
FormBook
8058effea9cbffe67d3cc69221eda22862586eecdb7c9409b4f9fd6eab6ea04f
FormBook
82f4ebd30b18743d8cc409de5931a978434755705af9bbfa3c6d8d0b34d30a6b
FormBook
b6bba549cf3117215c67958b942340703dbf010048d3fc7ecea2871d1d4618e7
FormBook
d4014ac2689b47f11708425cad3d8aa02dd05ee6d6745006156dffbe0a27b4be
FormBook
da111408d9dccb99b2c429d535ca55f6e970d911da4c24553e75d02fe9c00489
FormBook
+ 2'370 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/201008-jaq6865r3s/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.trusted-inspections.com/k8b/
Unpacked files
SH256 hash:
4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922
MD5 hash:
88ebf5f77bf1a7c384d267e077c2cc7e
SHA1 hash:
8e9f7a81a64910578e864989b944d378c6fe5f13
Link:
https://www.unpac.me/results/89f77014-2f74-44dc-8601-313da34fd328/
SH256 hash:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
Link:
https://www.unpac.me/results/89f77014-2f74-44dc-8601-313da34fd328/
SH256 hash:
51c442850d140088f9e172218190808f24500834e81ff986efbfc2753bb5c731
MD5 hash:
341b3b46c9a5e2941917a2d99b9d1875
SHA1 hash:
fb6cdddee3d4ab4db5f9279f90f2f6ef62dad1a3
Link:
https://www.unpac.me/results/89f77014-2f74-44dc-8601-313da34fd328/
SH256 hash:
5a144f9e72d86bf7789929db2bb48481a8ce2d876da64d70c74a456658dc0b97
MD5 hash:
78d30848461d468119773c4c949b10b0
SHA1 hash:
91f23f2766aa75da9c6fb67e1dc437f87c2422a5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/89f77014-2f74-44dc-8601-313da34fd328/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922

File information

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

Malspam

FormBook

rar c34be11de268a3548b691ae4c139149c3204b1562dc41b86a6bab8b3a34654a5

FormBook

Executable exe 4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922

(this sample)

  
Dropped by
MD5 e64e65948e6a6afcae853c4444a1621f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/69211/
  
Dropped by
SHA256 c34be11de268a3548b691ae4c139149c3204b1562dc41b86a6bab8b3a34654a5

Comments