MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8. 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: 11


Intelligence 11 IOCs YARA 6 File information Comments
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SHA256 hash: 46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8
SHA3-384 hash: 0b4adf25eccb9d6120aa6ccc14d8213b3390b19a6a54c03534acbd3fef68c68a9df69f683a4df53baedee743536403c5
SHA1 hash: 44195622c30b661d6ec744e013eb6f0472cd9b47
MD5 hash: 9fc54f2baf929510d1fa5422dfa2c873
humanhash: georgia-ack-comet-papa
File name:z12____________.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'762'240 bytes
First seen:2024-06-10 09:49:29 UTC
Last seen:2024-06-11 17:09:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:07KUdFLKGYQN3EygGeGlMTXe7ebGaoi2T1OQ4:ZUR2w
TLSH T19ED5FA3A1CBD123B91A4C6A5CFC58827F454D9BB31222939A4D3B7998377D8329C317E
TrID 70.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.ICL) Windows Icons Library (generic) (2059/9)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 1c189bda9b2d575b (14 x Formbook, 4 x SnakeKeylogger, 2 x DarkTortilla)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
484
Origin country :
BR BR
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Packed2.46929.21425.20179.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666706d0a439c6d6b0874ee3win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Network Static Swotter Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Unauthorized injection to a recently created process
DNS request
Connection attempt
Sending an HTTP GET request
Blocking the User Account Control
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
evasive vbnet
Link:
https://www.filescan.io/uploads/6666cc5021581a92819bf47f/reports/1d6f7083-169d-40c0-920e-4608f4e3d64c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8
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/81c6183a-cf02-43e2-b2c9-5d257f325031
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1454479
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Disables UAC (registry)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1454479 Sample: z12____________.exe Startdate: 10/06/2024 Architecture: WINDOWS Score: 100 26 18.31.95.13.in-addr.arpa 2->26 28 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->28 30 Multi AV Scanner detection for submitted file 2->30 32 Yara detected UAC Bypass using CMSTP 2->32 34 6 other signatures 2->34 8 z12____________.exe 1 3 2->8         started        signatures3 process4 signatures5 36 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->36 38 Writes to foreign memory regions 8->38 40 Allocates memory in foreign processes 8->40 42 3 other signatures 8->42 11 powershell.exe 23 8->11         started        14 ilasm.exe 8->14         started        16 WerFault.exe 19 16 8->16         started        18 2 other processes 8->18 process6 signatures7 44 Loading BitLocker PowerShell Module 11->44 20 WmiPrvSE.exe 11->20         started        22 conhost.exe 11->22         started        24 WerFault.exe 22 18 14->24         started        process8
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8/
Threat name:
ByteCode-MSIL.Spyware.FormBook
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Status:
Malicious
First seen:
2024-06-09 22:04:15 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
4
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i3cwy47pp4av57adetpesdarkgp7iploqiuwpx3h2po6flm57dua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion execution persistence trojan
Link:
https://tria.ge/reports/240610-lyfbzsgb35/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Program crash
Launches sc.exe
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Uses the VBS compiler for execution
Windows security modification
Adds policy Run key to start application
Command and Scripting Interpreter: PowerShell
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8
MD5 hash:
9fc54f2baf929510d1fa5422dfa2c873
SHA1 hash:
44195622c30b661d6ec744e013eb6f0472cd9b47
Link:
https://www.unpac.me/results/1e63edbf-2f54-42db-bf8a-4f6276c2dc50/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/46c56c73ef7f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

Formbook

zip a09a03abaedf3ef490589e11ab15af2e0a3a441f6a0e059e2305ee4ebcc58fa2

Formbook

Executable exe 46c56c73ef7f015efc0324de490c11519ff43d6e822967df67d3dde2ad9df8e8

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 a09a03abaedf3ef490589e11ab15af2e0a3a441f6a0e059e2305ee4ebcc58fa2
  
Dropped by
MD5 4e89151b51f616e2b559bb83881a68e6

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments