MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1d52a0e43063bbfa96ddef498339a154c08950af5766bd160219751742b3d89f. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1d52a0e43063bbfa96ddef498339a154c08950af5766bd160219751742b3d89f
SHA3-384 hash: ddde57f7ebd93ccdef725052bb0825b4b4e53b198541283f33dbedcc94b167cb749c554f6caa171864e86c469c023cc5
SHA1 hash: a9d2a488ee361c47ebd9a9e216a3f350245151b8
MD5 hash: e0f26a611611483e49ad20990aa2eab8
humanhash: bluebird-ohio-connecticut-south
File name:Quotation-doc4.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:470'016 bytes
First seen:2020-10-28 08:27:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:eZY/WNyReqkUr3aSHj2t0jHBl+QuWLViE:eZYuNYr3PHat0jHB0QfVi
TLSH 77A4C0713D92697ECA7B0775517981C0FEBA26C73FA1CB0E715A430C0E11A2BAB5325B
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

From: Antoinette Nikoletta <sales@forhrprofessionals.info>
Subject: RE: New order
Attachment: QUOTATION.pdf.rar (contains "Quotation-doc4.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
113
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/80359/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Creating a process from a recently created file
Launching the default Windows debugger (dwwin.exe)
Launching a process
Launching cmd.exe command interpreter
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/514745
Signature
.NET source code contains very large array initializations
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 306494 Sample: Quotation-doc4.exe Startdate: 28/10/2020 Architecture: WINDOWS Score: 100 35 www.smuxgguidl.net 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 41 Yara detected FormBook 2->41 43 5 other signatures 2->43 11 Quotation-doc4.exe 7 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 11->29 dropped 31 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->31 dropped 33 C:\Users\user\AppData\Local\Temp\...\njn.dll, PE32 11->33 dropped 51 Tries to detect virtualization through RDTSC time measurements 11->51 15 AddInProcess32.exe 11->15         started        18 WerFault.exe 23 9 11->18         started        signatures6 process7 signatures8 53 Modifies the context of a thread in another process (thread injection) 15->53 55 Maps a DLL or memory area into another process 15->55 57 Sample uses process hollowing technique 15->57 59 2 other signatures 15->59 20 explorer.exe 15->20 injected process9 process10 22 ipconfig.exe 20->22         started        signatures11 45 Modifies the context of a thread in another process (thread injection) 22->45 47 Maps a DLL or memory area into another process 22->47 49 Tries to detect virtualization through RDTSC time measurements 22->49 25 cmd.exe 1 22->25         started        process12 process13 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1d52a0e43063bbfa96ddef498339a154c08950af5766bd160219751742b3d89f/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2020-10-28 01:29:57 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dvjkbzbqmo57vfw555eygonbktaisufpk5tl2fqcdf2roqvt3cpq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201028-ws6xvn67je/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.elchef.club/ee5/
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 da492fe65c0a3f44e46b316812d9cf30da0af47431bc5f38424b92faec7e786b

Formbook

Executable exe 1d52a0e43063bbfa96ddef498339a154c08950af5766bd160219751742b3d89f

(this sample)

  
Dropped by
MD5 5578c2a66bbaefb8e1d196d3d1b23046
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/80359/
  
Dropped by
SHA256 da492fe65c0a3f44e46b316812d9cf30da0af47431bc5f38424b92faec7e786b

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