MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
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SHA256 hash: 4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe
SHA3-384 hash: 00be9e33b591398705de0916f111af99dc86d60d953fe520cb272af6d4ac680c04fe055fb628c23f15f9104e713167ce
SHA1 hash: 9bbff7d59024916825e5df3479b695a99ed0048e
MD5 hash: d9bd68c9c2e2d90cbaad65e85c7e0823
humanhash: ceiling-bakerloo-california-blue
File name:SecuriteInfo.com.Win32.PWSX-gen.793.23827
Download: download sample
Signature Formbook
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File size:615'936 bytes
First seen:2023-11-20 11:17:10 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:kEX0CO/WivCe4YdPoHhMRtvxWpF0KIzNrTvR7n+zNy6oX+fO4j0:YWiqe9BoHhMR670FzNczNd0+f
TLSH T110D42341936CA327C87357F548154A1E073379272819F7ACDDCE5AE922A2F120F72B9B
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
338
Origin country :
FR FR
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/459297/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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SecuriteInfo.com.Win32.PWSX-gen.793.23827.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Gathering data
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Malicious Packer
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bdcd316f-8fc2-4c06-9867-88775f342cd1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1345120
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe/
Threat name:
ByteCode-MSIL.Trojan.Spynoon
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Status:
Malicious
First seen:
2023-11-20 11:18:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
14 of 23 (60.87%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jsa3pnb7cccuarbaxqmwnadtixpp257zisuta3uin6monck2vt7a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231120-nd92zage7x/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
8eaf5d0bc8d0039c5cd642896646ad98a9bba712578e6e623e2aeb215645fd2c
MD5 hash:
12ffe1bf2f374c08f2a7df18c1ddb2db
SHA1 hash:
34a46540c31368ff541316c8c49da1e3b84f9a60
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
SH256 hash:
2ab958c88ef900c2739c151807319ee39d081399ed1a4093acd562a300300c80
MD5 hash:
1db4b5c5ca9afaf540ee8ee9d3965e5f
SHA1 hash:
452f01a8e68ebc7131061fe3f3f611cdbe644886
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
SH256 hash:
a9580094ee73679efc1cf3fa302d129ed3aa596e902ae20e65395d6d13d26e18
MD5 hash:
b749611aa05f7cd026471e1377cf0355
SHA1 hash:
8b4d4ded7b422c70f54d5ced1777fb88e381314f
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
SH256 hash:
96aa9e077628e3e2b34377b2fe13790418ffff3bcda52722b6ea896b7d1dc1f2
MD5 hash:
1c46ccc41efb21d8de63e849c543c878
SHA1 hash:
6753261ed61bc52fad3b0af8dbac98e2871166ba
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
SH256 hash:
81a9e5e4f2481170ea07fbe19c19308d55453dbe893e283d74f9d34768067068
MD5 hash:
f82eaca89ad8b7c448dca6411ff2a8fa
SHA1 hash:
411af9e95ac5b764865f8f9a032458f9a7cc2501
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
SH256 hash:
4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe
MD5 hash:
d9bd68c9c2e2d90cbaad65e85c7e0823
SHA1 hash:
9bbff7d59024916825e5df3479b695a99ed0048e
Link:
https://www.unpac.me/results/20605b64-acbc-4421-99c1-91b92bbaa2f0/
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/4c81b7b43f1085404420bc1966807345defd77f944a9306e886f98e6895aacfe

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/459297/

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