MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca457dfbc65703fcbc3d124e7aac9933713f8788f2e04a92548ff95a23619139. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca457dfbc65703fcbc3d124e7aac9933713f8788f2e04a92548ff95a23619139
SHA3-384 hash: fa9e2ba459858698b7da616902ade064f2becd45bcfc8e4e636cf16a6b0d372dec8b07543fdfa4f6cb67125812bb4018
SHA1 hash: 1d1c1aa6dfee7681d048fdcad0b1f05cd3dc8da0
MD5 hash: adaa6aa6c93e0c725b13c268442e1625
humanhash: island-october-minnesota-montana
File name:2020.07.06.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:589'312 bytes
First seen:2020-07-06 08:15:27 UTC
Last seen:2020-07-06 09:06:22 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 12288:VXKWJ7gt5xR0vUCKPsenbi+5JBU4uT1g2DoYKD:fSxR0AsenbHRgT1gc
Threatray 5'204 similar samples on MalwareBazaar
TLSH 97C45A75F6EFA182DE320178664420E6B9EFAC904100D27862797FBBF2F5713D49C61A
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: ns1.aparatologiadeestetica.com
Sending IP: 91.142.208.185
From: antika exim<antika.exim@gmail.com>
Subject: Re:INQUIRY-Transfer
Attachment: 2020.07.06.rar (contains "2020.07.06.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
78
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/21347/
Detection(s):
SecuriteInfo.com.Generic.mg.adaa6aa6c93e0c72.29033.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for analyzed file
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Unauthorized injection to a browser process
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ca457dfbc65703fcbc3d124e7aac9933713f8788f2e04a92548ff95a23619139/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-07-06 08:17:09 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zjcx366gk4b7zpb5cjhhvlezgnyt7b4i6lqevesur74vui3bse4q._file
Verdict:
malicious
Label(s):
netwirerc
Create hunting rule
Similar samples:
0831d2ef7d75d3086cfea4f7fa8c0b0dd8d0d4bff400670dda898a7dd1ded392
FormBook
1b8b4e62fb4118fc4f27c17d3a94d6d61a83cd6d11b224460d7f52b2a5f7c7d5
FormBook
1f8effc9e8ef41356c4446d27273380211fcbb6416b62e705398a581da76dc6a
FormBook
24f25d0bca087db5a6a5733171d3cee1fbcacdfcb00ef5b7bf79ad6fe362b069
FormBook
2e4937d9881cbbdce22d794992382cc914b1f14543a71c17b7bfc7eb9e49a558
FormBook
317f3e79ff4110f5310f4722d429082ef957112fc16221b28c7e036a4b7f68f8
FormBook
7f6459ace4d6259e61c8170563af8a30f25568457902f4f717c8ad17574efab6
FormBook
c458849465e25bcdc935e8a2db439ecb9e3cc099cd31b0f510dc77fc0d6704cc
FormBook
ca54dac8de04ef9b1f74a39470ae1f615ecbb9cd5eaa093c3d70d7d40576eb9a
FormBook
e993dc4733d3db72ebb90a0e2aa6c0e665ac6bb1679c5235ed8df88a9091dacd
FormBook
+ 5'194 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
persistence evasion trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200706-pamp32svcn/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run entry to start application
Checks whether UAC is enabled
Reads user/profile data of web browsers
Loads dropped DLL
Executes dropped EXE
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

FormBook

rar bd255e714e52cf21202645362573cedb2285c67f6e6e16b59e14c07c0b1ac189

FormBook

Executable exe ca457dfbc65703fcbc3d124e7aac9933713f8788f2e04a92548ff95a23619139

(this sample)

  
Dropped by
MD5 70bafbd18ba87ca0706362782b903f63
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/21347/
  
Dropped by
SHA256 bd255e714e52cf21202645362573cedb2285c67f6e6e16b59e14c07c0b1ac189

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