MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 db976b273e92b605275bbe6c8590f3ef6687faa0effc351a35d15af1f8fc1c3a. 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 2 File information Comments

SHA256 hash:	db976b273e92b605275bbe6c8590f3ef6687faa0effc351a35d15af1f8fc1c3a
SHA3-384 hash:	7b369846a651d128c49b44bae1612ba9ba5d2d2c4b91a5abcb88030ea34f5fed6edea170cc177d2d9a1b3b1c9044ea5f
SHA1 hash:	ee1ce06b629ebed7e4aa54abe1df4e41eebd6f0f
MD5 hash:	52c8b4dbc001dd917dfd52ce2f7e00c5
humanhash:	carbon-oregon-may-july
File name:	05-08.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	466'944 bytes
First seen:	2020-08-05 13:48:42 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep	6144:ITkZWGYlDhZ//qtSMy4j1CrbMPSTsuXlQHzsTBOtWcOi+NTj:kkKjZASMy4j1CrbSR2lCiTj
Threatray	5'311 similar samples on MalwareBazaar
TLSH	76A48D3979428838C57B817074B85FA676391A6A3FC08AAF63D9638C7F4215F731724E
Reporter	abuse_ch
Tags:	BBVA ESP exe FormBook geo

abuse_ch

Malspam distributing Formbook:

HELO: slot0.emothway.com
Sending IP: 45.95.169.243
From: BANCO BBVA <info@emothway.com>
Reply-To: BANCO BBVA <mailreply01@mail.com>
Subject: Aviso de pago: Ref. [GLV223170812] / Créditos ACH / Ref. Cliente: [18325_PK] / Ref. Segunda parte: [80015757]
Attachment: 05-08.zip (contains "05-08.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

101

Origin country :

n/a

Vendor Threat Intelligence

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/39657/

Detection(s):

Win.Malware.Formbook-7399661-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Sending a UDP request

Creating a file in the %temp% directory

Creating a process from a recently created file

Creating a file

Launching a process

Launching cmd.exe command interpreter

Setting browser functions hooks

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Unauthorized injection to a system process

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/411332

Signature

.NET source code contains very large array initializations

Allocates memory in foreign processes

Injects a PE file into a foreign processes

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)

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Tries to detect virtualization through RDTSC time measurements

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/db976b273e92b605275bbe6c8590f3ef6687faa0effc351a35d15af1f8fc1c3a/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-05 13:50:09 UTC

AV detection:

26 of 29 (89.66%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=3olwwjz6sk3akj23xzwileht55tip6va576dkgrv2fnpd6h4dq5a._file

Verdict:

malicious

Formbook

3df6c5354d1899b7249078b6aec00872710092c2328c0a3e20c79409f42adad4

Formbook

474cad642b1cf88f8d7f922cbfd9b8a00d7fc0eb40cafc0877007ee2884f105f

Formbook

5ad5a878cb51009bc4e935705c0a1ef60654891dd16fe19f728f344b5aaeff2e

Formbook

6b307cbe4f1e8d769af95142d574e77a50654e25cce234f48da6c5e7a7aa4b99

Formbook

8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531

Formbook

967360ebfc55336f03edccc32869b0e6b65c17e66fcdac083d4bcc185b852c0d

Formbook

d3e579b62c6877384f6ed9da7d86aea05ff6b881c141470ec7858fe9f0d992a9

Formbook

e04b0836667f55bcc1778c62761c99af52cb5c42c14cef3962531512def2944b

Formbook

e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c

Formbook

+ 5'301 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

rat family:formbook

Link:

https://tria.ge/reports/200805-5p2a9nsqhn/

Behaviour

Formbook Payload

Formbook family

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/db976b273e92b605275bbe6c8590f3ef6687faa0effc351a35d15af1f8fc1c3a

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