MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150. 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: 8


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150
SHA3-384 hash: c129820d6be3054b10fa5a46da3cd844da738cc62486086dc226f87bae39d559522c838797080f14860645cad7e1e3e1
SHA1 hash: ff8552888d2a74ec9d6a59d4fdf60e4644086989
MD5 hash: e55726dccd0214b52de1ee6114299836
humanhash: solar-video-sodium-tennis
File name:Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:928'768 bytes
First seen:2020-12-03 17:46:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:RnjBp6iRf2qPVGNbTuMuKBD7hpvALDMr5l/uQuoHdiwVesfu3UApJ2bQCHe60P:RnhfST0sDd0DM3/9diPGuRKBl0P
Threatray 3'098 similar samples on MalwareBazaar
TLSH 531517207BB45E14E2366F3C80601D156FB97F466B3BE46C6DF8F0CA4B336424AE4A95
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: irest.pt
Sending IP: 51.210.39.162
From: Breve-Tufvassons sp. z o. o.<breve.pl@hotmail.com>
Subject: Re:RFQ Request for New Quotation With Refrence: Breve#T036B96
Attachment: Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.7z (contains "Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/106668/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Launching a process
Launching cmd.exe command interpreter
Result
Gathering data
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/555028
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 326619 Sample: Breve-Tufvassons sp.o.o.o C... Startdate: 03/12/2020 Architecture: WINDOWS Score: 100 37 www.meridianconversation.com 2->37 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 6 other signatures 2->51 11 Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe 3 2->11         started        signatures3 process4 file5 35 Breve-Tufvassons s...And Bout Us.exe.log, ASCII 11->35 dropped 55 Injects a PE file into a foreign processes 11->55 15 Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe 11->15         started        18 Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe 11->18         started        20 Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe 11->20         started        22 Breve-Tufvassons sp.o.o.o Company Profile And Bout Us.exe 11->22         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 24 explorer.exe 15->24 injected process9 dnsIp10 39 www.finskills.net 199.34.228.59, 49756, 80 WEEBLYUS United States 24->39 41 ilhadeitaparicatem.com 192.185.216.121, 49762, 80 UNIFIEDLAYER-AS-1US United States 24->41 43 18 other IPs or domains 24->43 53 System process connects to network (likely due to code injection or exploit) 24->53 28 mstsc.exe 24->28         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 28->57 59 Maps a DLL or memory area into another process 28->59 61 Tries to detect virtualization through RDTSC time measurements 28->61 31 cmd.exe 1 28->31         started        process14 process15 33 conhost.exe 31->33         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2020-12-03 17:47:07 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jxjxqfryny7vp6wadspwkbfuqiyterldzid536eivl7qm5rqcfia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
+ 3'088 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/201203-w1qaewasre/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.querooo.com/utau/
Unpacked files
SH256 hash:
9584f6d01e6452371cc9b4828030a13045d99c243c497b63628828e66aabe26f
MD5 hash:
7476e403eef14ac403c63c7279831780
SHA1 hash:
8387f558e30dc115987ac2b5c174a41302471abf
Link:
https://www.unpac.me/results/0cdeb69f-e96c-4332-87e1-cca54ea78651/
SH256 hash:
4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150
MD5 hash:
e55726dccd0214b52de1ee6114299836
SHA1 hash:
ff8552888d2a74ec9d6a59d4fdf60e4644086989
Link:
https://www.unpac.me/results/0cdeb69f-e96c-4332-87e1-cca54ea78651/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150

File information

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

a739284a335e4e2b3ddaa8019fb1ce5f

Formbook

Executable exe 4dd37816386e3f57fac01c9f6504b48231324563ca07ddf888aaff0676301150

(this sample)

  
Dropped by
MD5 a739284a335e4e2b3ddaa8019fb1ce5f
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/106668/

Comments