MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4380edc2ba9f308ac8505936eaf1f70317fcf14b97a4295fd04414aa50de070. 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
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SHA256 hash: b4380edc2ba9f308ac8505936eaf1f70317fcf14b97a4295fd04414aa50de070
SHA3-384 hash: 52aa341a6d422669eae2e839396e37cc918a7db87c67eb34d4ea25a0ad3c2f824afc3b086d61277f4dc0650b61387f56
SHA1 hash: 544b98ecc112a0e3b6e22beee5815b219f75be7d
MD5 hash: 72c6373e70bcd8be4f04e3f678d2c1e5
humanhash: coffee-bakerloo-maine-skylark
File name:RFQ Geres Malaysia.xlsx
Download: download sample
Signature Formbook
Create hunting rule
File size:832'512 bytes
First seen:2020-08-17 18:36:28 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/encrypted
ssdeep 24576:ejKcCB7h8xRtuuRQrSrNQnA1eqMZfqWYdC:AdCB76BRknATMZedC
TLSH 3D052311FDC80F1BDB43C07ABF65A8C3AC5FDC211386660BABA6396150F12B599E1477
Reporter abuse_ch
Tags:CVE-2017-11882 FormBook xlsx


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail.geres.eu
Sending IP: 91.121.61.178
From: Clémentine LARATTE <c.laratte@geres.eu>
Subject: Inquiry from Geres Malaysia
Attachment: RFQ Geres Malaysia.xlsx

FormBook payload URL:
http://smlflstdyeconsultationlifesecurecen1ter.duckdns.org/smldoc/regasm.exe

FormBook C2:
http://www.ranges-xx.com/uts2/

Intelligence

File Origin
# of uploads :
1
# of downloads :
60
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
PUA.Doc.Packed.EncryptedDoc-6563700-0
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Launching a process
DNS request
Creating a file in the %AppData% directory
Sending an HTTP GET request
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/434572
Signature
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Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 269657 Sample: RFQ Geres Malaysia.xlsx Startdate: 18/08/2020 Architecture: WINDOWS Score: 48 12 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->12 6 EXCEL.EXE 160 47 2->6         started        8 mspaint.exe 27 2 2->8         started        process3 process4 10 splwow64.exe 6->10         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4380edc2ba9f308ac8505936eaf1f70317fcf14b97a4295fd04414aa50de070/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-08-17 17:09:14 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wq4a5xblvhzqrlefawjw5ly7oayx7tyuxf5effp5arauvjin4bya._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook persistence
Link:
https://tria.ge/reports/200817-cf1w558cls/
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.ranges-xx.com/uts2/
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/b4380edc2ba9f308ac8505936eaf1f70317fcf14b97a4295fd04414aa50de070

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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

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

Malspam

Formbook

Excel file xlsx b4380edc2ba9f308ac8505936eaf1f70317fcf14b97a4295fd04414aa50de070

(this sample)

Formbook

Executable exe 70ecffff57ecd39682bc7de003d937b43d0b0c9bfaadd315d236627475608e54

  
URLhaus
https://urlhaus.abuse.ch/url/435075/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 70ecffff57ecd39682bc7de003d937b43d0b0c9bfaadd315d236627475608e54
  
Dropping
MD5 7800cc595357b99af119a838cc346ca6

Comments