MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5bd5a94befaf51c0702273d144aa5d31fc88e7f677ea33ea98408450e1b535d7. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5bd5a94befaf51c0702273d144aa5d31fc88e7f677ea33ea98408450e1b535d7
SHA3-384 hash: 7e41812197b964ab3d908dd8154b2f83cf647de78458e4e312559a89bfaa8e4f449b2ab31acb56ffb137e4d2c92e2331
SHA1 hash: 44580e7501dc4db68a46ff3fade4cb9afa71ab08
MD5 hash: 43f55a44785d0791c35b997b20a9c8bf
humanhash: rugby-king-carolina-robert
File name:nngvfd.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:811'520 bytes
First seen:2020-08-04 14:43:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:2HAgbCa8sGQTydyqQuUnLcxY7lQeAexkc7uFDQ8V6Y0VOXo34FIS:2HX8kTUyqQyxYJQeHzuFDZ70VO4oF
Threatray 5'098 similar samples on MalwareBazaar
TLSH 26056C367083C028D83A1174A83C5AC6B6297E7A37548A5D73A7138C6F536EB772721F
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: slot0.ilerpic.com
Sending IP: 104.168.176.234
From: HSBC Advising Service <advising.service.6898763332222@mail.hsbcnet.hsbc.com>
Subject: Payment Advice - Advice Ref:[HSB9122000] / Priority payment /Customer Ref:[000011755522]
Attachment: PAYMENT_ADVICE.xlsm

Formbook payload URL:
http://koqfkrjg.wze.io/sql/nngvfd.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38791/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Setting browser functions hooks
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Creating a file
Launching the default Windows debugger (dwwin.exe)
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
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/409623
Signature
.NET source code contains very large array initializations
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257079 Sample: nngvfd.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 92 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected FormBook 2->39 41 .NET source code contains very large array initializations 2->41 43 Modifies the prolog of user mode functions (user mode inline hooks) 2->43 10 nngvfd.exe 4 2->10         started        process3 file4 31 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->31 dropped 13 AddInProcess32.exe 10->13         started        16 AddInProcess32.exe 10->16         started        process5 signatures6 53 Modifies the context of a thread in another process (thread injection) 13->53 55 Maps a DLL or memory area into another process 13->55 57 Sample uses process hollowing technique 13->57 59 2 other signatures 13->59 18 explorer.exe 13->18 injected process7 dnsIp8 33 www.simonejung.com 172.67.192.60, 49736, 80 CLOUDFLARENETUS United States 18->33 35 www.ceptelefonukiliflari.com 18->35 45 System process connects to network (likely due to code injection or exploit) 18->45 22 WWAHost.exe 18->22         started        25 mstsc.exe 18->25         started        signatures9 process10 signatures11 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49 51 Tries to detect virtualization through RDTSC time measurements 22->51 27 cmd.exe 1 22->27         started        process12 process13 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5bd5a94befaf51c0702273d144aa5d31fc88e7f677ea33ea98408450e1b535d7/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 14:45:06 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lpk2ss7pv5i4a4bcopiujks5gh6irz7wo7vdh2uyiccfbynvgxlq._file
Verdict:
malicious
Similar samples:
0bf6ccdd920a50186f7318c51564ecc8f502302b084a5fda3feadb0d51e40f24
Formbook
1e82d551bb0693edad6a527c0355b59476d25afc326168b616205fe186ca5a30
Formbook
46c1beb680fee0894d6a58d53ee86faeb9dfa24db88f178580dfbd1385e4c581
Formbook
70ecffff57ecd39682bc7de003d937b43d0b0c9bfaadd315d236627475608e54
Formbook
7eb341c011c4ea364ef927cfc57ac980111e9c49012834c3760896fec7f04d52
Formbook
85f9c52380c96ddf3aa66361640a6a6232a182d5d4437de8a3585fa0d216ebc4
Formbook
887de911a26e0008429adcba8abc212d36423fae62d40aa1df57e2883db77d45
Formbook
8f06b49b371c6b257b716689b767ebf4bbc75391d0cf152b9bbe498ef55d017c
Formbook
bfb2fd4412e9cd136a794f61436d597d7d58fb4fd842509dabe7a70344e4fd97
Formbook
e224e30554ce3a83c6ef2ca1c81b50ca377486f55bed19078658578bbef844f0
Formbook
+ 5'088 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat family:formbook
Link:
https://tria.ge/reports/200804-jmxeyqv22n/
Behaviour
Formbook family
Formbook Payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/5bd5a94befaf51c0702273d144aa5d31fc88e7f677ea33ea98408450e1b535d7

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

File information

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

Malspam

Formbook

Excel file xlsm 0875d852719a6d039ce8697fa09f715a5bcb73f9197ed11a6542eb9f708bdab4

Formbook

Executable exe 5bd5a94befaf51c0702273d144aa5d31fc88e7f677ea33ea98408450e1b535d7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/424344/
  
Dropped by
MD5 922ba49e353c2a9a8905fafdc731b165
  
Dropped by
SHA256 0875d852719a6d039ce8697fa09f715a5bcb73f9197ed11a6542eb9f708bdab4
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/38791/

Comments