MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314
SHA3-384 hash: 7df4d455ecc9b3ca21c1c258c5484348dc5634055e6e33b78fbd51b8e1707b30b9f82104059e6dabf869db89be6df3c6
SHA1 hash: f0c97857e99bd63f3db1c6984ecf7e89ae0fac93
MD5 hash: 8878c56998671463be540aae4a2a321a
humanhash: wolfram-whiskey-fifteen-earth
File name:Payslip.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:352'768 bytes
First seen:2020-08-05 08:09:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:FBHVaBqb9G+u5Q8sIkCcnN6QTo6sL4Pqm2M6X/82S3gji8GP3v9f6HTKwGQfYiu7:FBHAgbCa8sGQTSM52SKidP3Z6c7B9Aq
Threatray 5'109 similar samples on MalwareBazaar
TLSH 12749E397887C129D9A90E758439ACC2BB7576AA3B65CA1F708A134C1F8305F7B1706F
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: server0.ihswt.com
Sending IP: 142.11.236.209
From: Per Te Corporation <sales@ihswt.com>
Subject: Payment Advice
Attachment: Payslip.rar (contains "Payslip.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
67
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39168/
Detection(s):
SecuriteInfo.com.Fareit-FVT8878C5699867.30265.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
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:
96 / 100
Link:
https://www.joesandbox.com/analysis/410507
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Injects a PE file into a foreign processes
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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 257512 Sample: Payslip.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 96 30 www.frankly.ltd 2->30 34 Malicious sample detected (through community Yara rule) 2->34 36 Yara detected FormBook 2->36 38 .NET source code contains very large array initializations 2->38 40 Modifies the prolog of user mode functions (user mode inline hooks) 2->40 11 Payslip.exe 4 2->11         started        signatures3 process4 file5 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->28 dropped 48 Writes to foreign memory regions 11->48 50 Allocates memory in foreign processes 11->50 52 Injects a PE file into a foreign processes 11->52 15 AddInProcess32.exe 11->15         started        signatures6 process7 signatures8 54 Modifies the context of a thread in another process (thread injection) 15->54 56 Maps a DLL or memory area into another process 15->56 58 Sample uses process hollowing technique 15->58 60 2 other signatures 15->60 18 explorer.exe 15->18 injected process9 dnsIp10 32 www.zerohyaku.biz 18->32 21 wscript.exe 18->21         started        process11 signatures12 42 Modifies the context of a thread in another process (thread injection) 21->42 44 Maps a DLL or memory area into another process 21->44 46 Tries to detect virtualization through RDTSC time measurements 21->46 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 08:11:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ti7rrmc44xqk3ccnzfnpejxvqtkihki52folrfnaztulsh5swmka._file
Verdict:
malicious
Similar samples:
27faaaca4acb955010d7b8c16764a536c04149f2d332f99668d6ff6f292bfc20
Formbook
28ddf0fa7f44508ea2b7c6f2de45496e5a031aa84d095c0b8c14732173073fc7
Formbook
3374d3d11eef1e8fc48019fccac4fb5475ce8fec60c5e019c64662723fd5c1b3
Formbook
4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93
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538026aea095085f7a8cd260a783b5495592a90ed7df928d6db87b7e2a3b8675
Formbook
b24a5df4c63722afbed1e3807b18fcc065008ec3431de146dbf3657dffa00893
Formbook
cd88f1f0051fb232edba57fff3fc2b789e0b286ec9b938d8f31c3ef52c6848df
Formbook
ceec91127018aba0be51981277015baf08e3f0ef6fbd0a5efe5821fa698ba645
Formbook
f01e05ea7a73c604ae68acbced809fa9a249818994aae64af13010b3ea82c892
Formbook
fc714509dc4c3d6f3e13028be7be8207b2377331266c8ce213c575e511f8d31f
Formbook
+ 5'099 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/200805-dlcwk3zjsx/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.78
Link:
https://yomi.yoroi.company/submissions/9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314

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 cb015883a3ca690ae7b5e83b0b0fc9bb1b1957b1af36417cd98bde4778c4adf5

Formbook

Executable exe 9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314

(this sample)

  
Dropped by
MD5 19822c0045b010d205b38b77d9108d33
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 cb015883a3ca690ae7b5e83b0b0fc9bb1b1957b1af36417cd98bde4778c4adf5
Cape
Cape
https://www.capesandbox.com/analysis/39168/

Comments