MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53. 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: 7

Intelligence 7 IOCs YARA 1 File information Comments

SHA256 hash:	70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53
SHA3-384 hash:	851d19aa6a6b1531a7837775f53f074ae185e829b4ca5cef9490874a6bad21df26f927ae7c57aaeec95ecd920bfc8198
SHA1 hash:	b02619b4a8f7006c2e02189db11a2057fe782c03
MD5 hash:	4be24de8af52fdeb819b9e99cf172ce9
humanhash:	eighteen-pluto-oranges-kitten
File name:	20200068.xlsx
Download:	download sample
Signature	Formbook Create hunting rule
File size:	638'976 bytes
First seen:	2020-08-13 08:49:08 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/encrypted
ssdeep	12288:XFkKE8PQnwoOI8g4ZwKXV7lkozF6Lx72k9kU7cvWZ0QC8fnf:BESeZOJg4+1ozAx72w3pZjf
TLSH	44D4239DBB0E2F7EC3372E763A208538438DDCF1B72AD89B12073756457E2A26658215
Reporter	abuse_ch
Tags:	FormBook xlsx

abuse_ch

Malspam distributing Formbook:

HELO: server.cma.com.my
Sending IP: 103.233.0.169
From: Orlando Yoon (Ho Seok Yoon) <orlandoyoon@evergreen-shipping.co.kr>
Subject: Documents for the Sea shipment(MATZ MAERSK / 017W , ETA:29/august)
Attachment: 20200068.xlsx

Formbook payload URL:
http://chinesewsdyhigncomeiscausedbythepan12msn.duckdns.org/chnsfrnd3/winlog.exe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

PUA.Doc.Packed.EncryptedDoc-6563700-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Launching a process

DNS request

Creating a file in the %AppData% directory

Launching cmd.exe command interpreter

Deleting a recently created file

Setting browser functions hooks

Sending an HTTP GET request

Launching a file downloaded from the Internet

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Creating a process from a recently created file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Result

Threat name:

Unknown

Detection:

malicious

Classification:

n/a

Score:

48 / 100

Link:

https://www.joesandbox.com/analysis/425513

Signature

(

)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53/

Threat name:

Win32.Trojan.Ymacco

Status:

Malicious

First seen:

2020-08-13 08:51:05 UTC

AV detection:

16 of 28 (57.14%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=obldynm76jad4jgenrrhhrwcfbh3j4b64j6mvrzhsd5ulswifnjq._file

Result

Malware family:

formbook

Score:

10/10

Tags:

rat spyware trojan stealer family:formbook persistence

Link:

https://tria.ge/reports/200813-6p6fkm3l7a/

Behaviour

Launches Equation Editor

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Drops file in Program Files directory

Suspicious use of SetThreadContext

Adds Run key to start application

Loads dropped DLL

Reads user/profile data of web browsers

Uses the VBS compiler for execution

Blacklisted process makes network request

Executes dropped EXE

Formbook Payload

Formbook

Malware Config

C2 Extraction:

http://www.porcber.com/jjk/

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

Threat name:

Exploit

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/70563c359ff2403e24c46c6273c6c2284fb4f03ee27ccac72790fb45cac82b53

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.