MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b
SHA3-384 hash: 9306cc0efb22e1ba20d1406bf3174478a3a740c0292ac5acf302621f491c969d7394c7600b0803b425843a598b95d422
SHA1 hash: cb2740742fc3198ddf6746e548a957e8b48e7534
MD5 hash: 1f61317812d90888cef4cd3bacc917f6
humanhash: beryllium-helium-texas-foxtrot
File name:Booking Confirmation.PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:950'168 bytes
First seen:2023-12-12 14:06:38 UTC
Last seen:2023-12-12 15:28:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:QBSAyXHSsJlFFhU6IVMtHEdJmGSH5EBqm873K9p2CKlVrIMYANxG7zvga9Xb7ufp:g0FG69H0J628LK9ulVrIMggaC
Threatray 2 similar samples on MalwareBazaar
TLSH T15815E079F4B9AD6CD8BE81794F6457E1623310132303D957CCA9CB80FA0E9D7EAC6492
TrID 30.2% (.EXE) Win64 Executable (generic) (10523/12/4)
18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
14.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.9% (.EXE) Win32 Executable (generic) (4505/5/1)
5.9% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter James_inthe_box
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Microsoft Cooperation 2023
Issuer:Microsoft Cooperation 2023
Algorithm:sha256WithRSAEncryption
Valid from:2023-12-12T00:47:41Z
Valid to:2024-12-12T00:47:41Z
Serial number: 3516bcd26b2f4705fe41a49cbffacb13
Thumbprint Algorithm:SHA256
Thumbprint: bb3858cf11711e04dbaf9d085da91e240fde1ccb0aab38242ef3f858e002c74b
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
237
Origin country :
US US
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/466430/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.8303.25193.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching cmd.exe command interpreter
Creating a file
Сreating synchronization primitives
Launching a process
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay packed
Link:
https://www.filescan.io/uploads/6578690b81a3a8ec606ec823/reports/dd6b71ca-3235-4d37-b1c1-68c58ece72ca/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/1057c8f5-c1ed-4d03-8b6a-f83ec4098175
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1360217
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Initial sample is a PE file and has a suspicious name
Uses an obfuscated file name to hide its real file extension (double extension)
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-12-12 01:16:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7r2nx22gmf5e4syolfxtoelqucyfpqapmdexus56cfqjcgrnznq._file
Verdict:
malicious
Similar samples:
23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231212-rezt6sfgh9/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b
MD5 hash:
1f61317812d90888cef4cd3bacc917f6
SHA1 hash:
cb2740742fc3198ddf6746e548a957e8b48e7534
Link:
https://www.unpac.me/results/6192d233-ffac-402b-aea7-ddc6de8a28fc/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3fe3a6df5a33/report/overview.html
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/3fe3a6df5a330bd2725872cb79b88b850582be007b064bd25df08b0488d16e5b

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/466430/

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