MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7a6b9a027fefdba700161804b4cdd67843534c5b34aeb341a491c895f1fbda8. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7a6b9a027fefdba700161804b4cdd67843534c5b34aeb341a491c895f1fbda8
SHA3-384 hash: 23171decff203a3fa6904192f9779870e938d8d04c178cc59aa96fff2f79c870d11f5402baad63538db6a1ed036d2611
SHA1 hash: 7c7ef2838b5bce26ec80fa8c8becdd1b1242e5ae
MD5 hash: 6a959a9276c026d279b40eedf42d93cb
humanhash: massachusetts-crazy-iowa-moon
File name:justificante de transferencia.vbs
Download: download sample
Signature Formbook
Create hunting rule
File size:331'311 bytes
First seen:2024-10-03 07:14:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 3072:SMZKYE8MHHnndFmFMZKYE8MHHnndFmjmYp:tKXHHnXmWKXHHnXmjmYp
TLSH T1E464F723CF06591486830E7C8B4A5727BD6C49BCE2F5EFC4A6A7681048F8732656B7DC
Magika vba
Reporter abuse_ch
Tags:FormBook vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66fe938d0fdf88870979e761
Tags:
exploit micro
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
aspnet_compiler dropper evasive lolbin
Link:
https://www.filescan.io/uploads/66fe447e70ee93675e14f3b8/reports/d5f3a865-51b6-45c9-a90d-3f31fe8b0821/overview
Verdict:
Malicious
Labled as:
Trojan.GenericS
Link:
https://www.hybrid-analysis.com/sample/a7a6b9a027fefdba700161804b4cdd67843534c5b34aeb341a491c895f1fbda8
Result
Verdict:
UNKNOWN
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1524799
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for dropped file
Benign windows process drops PE files
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Potential malicious VBS script found (has network functionality)
Sigma detected: WScript or CScript Dropper
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7a6b9a027fefdba700161804b4cdd67843534c5b34aeb341a491c895f1fbda8/
Threat name:
Script-WScript.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2024-10-02 01:53:00 UTC
AV detection:
4 of 38 (10.53%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u6tltibh7363u4abmgaewtg5m6cdkngfwnfowna2jeoisxy7xwua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
dcrat
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/241003-h287pa1djn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
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/a7a6b9a027fefdba700161804b4cdd67843534c5b34aeb341a491c895f1fbda8

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:Detect_Malicious_VBScript_Base64
Create hunting rule
Author:daniyyell
Description:Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.
Rule name:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique

File information

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

Comments