MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531. 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:	8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531
SHA3-384 hash:	48bda8665920831b7f5f8449a6fa38a9b785848540731e085aaf6fb956b8df55f3987440781512ad0fe4481f51e15078
SHA1 hash:	d773b5765fea2e2ccc65a1b3cdce92acbf111796
MD5 hash:	cf1749c2777e77ea56d55148cf96f939
humanhash:	aspen-lemon-six-comet
File name:	017-08.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	536'576 bytes
First seen:	2020-08-17 17:37:11 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:yS14FFhvAqvxXdF9UWK5WpLLW92JPZuds0jAt+FqMMVuph5MCgrn:yS1QbvgWK5WpLLW9GPZuJstGPMfC
Threatray	2'240 similar samples on MalwareBazaar
TLSH	B0B44B3535928C29CA36127030EC6AC7B6291A553FC5CA2E63DF53CCBF0586B7BA611D
Reporter	abuse_ch
Tags:	exe FormBook Hostwinds HSBC

abuse_ch

Malspam distributing Formbook:

HELO: hwsrv-762628.hostwindsdns.com
Sending IP: 104.168.242.143
From: HSBC Advising Service <info@erstisorof.com>
Subject: Payment Advice - Advice Ref:[GLV226611980] / ACH credits / Customer Ref:[LCY571905476] / Second Party Ref:[265452P]
Attachment: 017-08.zip (contains "017-08.exe")

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/47212/

Detection(s):

SecuriteInfo.com.Formbook.19328.32715.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% subdirectories

Sending a UDP request

Creating a file

Creating a process from a recently created file

Launching a process

Launching cmd.exe command interpreter

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Forced shutdown of a system process

Unauthorized injection to a system process

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

96 / 100

Link:

https://www.joesandbox.com/analysis/434355

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 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/8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531/

Threat name:

ByteCode-MSIL.Trojan.AgentTesla

Status:

Malicious

First seen:

2020-08-17 08:42:05 UTC

AV detection:

23 of 29 (79.31%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=ryxzugzdvxuuwcad5jl2zexjc3nk246xmdyhl7wy6fcdofiqiuyq._file

Verdict:

malicious

Formbook

3d8ff1b4492a541b44c03733b090c73fd992535d8c4e867abc0e6aeaf5b58b30

Formbook

5ad5a878cb51009bc4e935705c0a1ef60654891dd16fe19f728f344b5aaeff2e

Formbook

9295ce88660ed117b7cfff0886232a51dc6492bf6100738957bf93fabdb74bb8

Formbook

967360ebfc55336f03edccc32869b0e6b65c17e66fcdac083d4bcc185b852c0d

Formbook

b25e43fe3f6068eb13b79f8900dea897533005aee7e2139e6676b7cdc92cc588

Formbook

b3289e282e7c031fde98778bac0057bad5d933c85da0b43d95f177c6333fc3c2

Formbook

d3e579b62c6877384f6ed9da7d86aea05ff6b881c141470ec7858fe9f0d992a9

Formbook

db976b273e92b605275bbe6c8590f3ef6687faa0effc351a35d15af1f8fc1c3a

Formbook

e04b0836667f55bcc1778c62761c99af52cb5c42c14cef3962531512def2944b

Formbook

+ 2'230 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

agilenet rat persistence trojan spyware stealer family:formbook

Link:

https://tria.ge/reports/200817-bl73rwm81j/

Behaviour

Gathers network information

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Drops file in Program Files directory

Suspicious use of SetThreadContext

Adds Run key to start application

Loads dropped DLL

Obfuscated with Agile.Net obfuscator

Reads user/profile data of web browsers

Executes dropped EXE

Formbook Payload

Formbook

Malware Config

C2 Extraction:

http://www.funpexw.com/dmr/

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/8e2f9a1b23ade94b0803ea57ac92e916daad73d760f075fed8f1443715104531

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