MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf. 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: 13


Intelligence 13 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf
SHA3-384 hash: e86e41b5776b95210c4832ea0c712b20591c1306d2364dc2761a658c1f7f7133526fdd54bce410805538c8b03c4983ce
SHA1 hash: fe14ddef08711b79979cf7aeed86887ceed224e6
MD5 hash: 225a72e07ab06a11643bf76ecd034233
humanhash: bravo-social-hotel-kentucky
File name:225a72e07ab06a11643bf76ecd034233.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:26'214'400 bytes
First seen:2024-04-03 23:55:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'844 x AgentTesla, 19'775 x Formbook, 12'297 x SnakeKeylogger)
ssdeep 12288:XpoIY///1UFShTRFdaWD0vQ+oGZK5UumaBrTkGY8giQGUo2Q/B8Ms082ubb:eIY/lFaG0vnZyUuFOi9Uo2KNs08h
TLSH T19C47334606EEE01ECE4DE878E1C382384999174BAC401EFA5C6FED9476A76378D601ED
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Formbook C2:
http://a0933252.xsph.ru/2a0949c1.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
537
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
dcrat
Create hunting rule
ID:
1
File name:
4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf.exe
Verdict:
Malicious activity
Analysis date:
2024-04-03 23:57:28 UTC
Tags:
evasion generic stealer umbralstealer rat backdoor dcrat remote
Link:
https://app.any.run/tasks/8034d2ea-918b-4516-bf3c-7424e1d504f1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint overlay packed
Link:
https://www.filescan.io/uploads/660dec94582adaab043d8a34/reports/204f098c-50fb-42ac-b2b2-1572006724a3/overview
Verdict:
Malicious
Labled as:
MSIL.Cassiopeia.Generic
Link:
https://www.hybrid-analysis.com/sample/4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf
Result
Verdict:
MALICIOUS
Result
Threat name:
Blank Grabber, DCRat, Umbral Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419827
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates processes via WMI
Disables Windows Defender (via service or powershell)
Drops PE files to the startup folder
Drops PE files with a suspicious file extension
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies Windows Defender protection settings
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (suspicious strings)
Sigma detected: Disable Windows Defender AV Security Monitoring
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Powershell Defender Disable Scan Feature
Sigma detected: Schedule system process
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Startup Folder Persistence
Sigma detected: System File Execution Location Anomaly
Sigma detected: WScript or CScript Dropper
Snort IDS alert for network traffic
Suspicious execution chain found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Uses attrib.exe to hide files
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Yara detected Blank Grabber
Yara detected DCRat
Yara detected Generic Downloader
Yara detected Umbral Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1419827 Sample: b52ah8YEGS.exe Startdate: 04/04/2024 Architecture: WINDOWS Score: 100 104 discord.com 2->104 106 ip-api.com 2->106 112 Snort IDS alert for network traffic 2->112 114 Found malware configuration 2->114 116 Malicious sample detected (through community Yara rule) 2->116 118 23 other signatures 2->118 10 b52ah8YEGS.exe 17 7 2->10         started        15 dasHost.exe 2->15         started        17 dasHost.exe 2->17         started        19 2 other processes 2->19 signatures3 process4 dnsIp5 108 ip-api.com 208.95.112.1, 49704, 49706, 49714 TUT-ASUS United States 10->108 90 C:\Users\user\AppData\Local\...\injector.exe, PE32 10->90 dropped 92 C:\Users\user\AppData\Local\...\injector.bat, PE32 10->92 dropped 94 C:\Users\user\...\MissiyaSlomatDefender.vbs, ASCII 10->94 dropped 136 Potential malicious VBS script found (suspicious strings) 10->136 138 Found many strings related to Crypto-Wallets (likely being stolen) 10->138 140 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->140 142 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->142 21 injector.bat 6 10->21         started        24 wscript.exe 1 10->24         started        27 injector.exe 15 15 10->27         started        144 Antivirus detection for dropped file 15->144 146 Machine Learning detection for dropped file 15->146 file6 signatures7 process8 dnsIp9 82 C:\HyperfontSaves\browserWin.exe, PE32 21->82 dropped 84 C:\HyperfontSaves\UByKGl7UqmZa.bat, ASCII 21->84 dropped 86 C:\HyperfontSaves\KGBQltRLj0tWV.vbe, data 21->86 dropped 30 wscript.exe 21->30         started        120 Wscript starts Powershell (via cmd or directly) 24->120 122 Windows Scripting host queries suspicious COM object (likely to drop second stage) 24->122 124 Modifies Windows Defender protection settings 24->124 132 2 other signatures 24->132 33 wscript.exe 1 24->33         started        110 discord.com 162.159.128.233, 443, 49715, 49716 CLOUDFLARENETUS United States 27->110 88 C:\ProgramData\Microsoft\...\Hrfpg.scr, PE32 27->88 dropped 126 Found many strings related to Crypto-Wallets (likely being stolen) 27->126 128 Drops PE files with a suspicious file extension 27->128 130 Drops PE files to the startup folder 27->130 134 3 other signatures 27->134 35 powershell.exe 27->35         started        37 WMIC.exe 27->37         started        39 attrib.exe 27->39         started        41 schtasks.exe 27->41         started        file10 signatures11 process12 signatures13 150 Wscript starts Powershell (via cmd or directly) 30->150 152 Windows Scripting host queries suspicious COM object (likely to drop second stage) 30->152 43 cmd.exe 30->43         started        154 Modifies Windows Defender protection settings 33->154 156 Disables Windows Defender (via service or powershell) 33->156 45 powershell.exe 33->45         started        48 powershell.exe 33->48         started        50 powershell.exe 33->50         started        58 8 other processes 33->58 52 schtasks.exe 35->52         started        60 18 other processes 35->60 54 conhost.exe 37->54         started        56 conhost.exe 39->56         started        process14 signatures15 62 browserWin.exe 43->62         started        66 conhost.exe 43->66         started        148 Uses schtasks.exe or at.exe to add and modify task schedules 45->148 68 conhost.exe 45->68         started        70 conhost.exe 48->70         started        72 conhost.exe 50->72         started        74 conhost.exe 58->74         started        76 conhost.exe 58->76         started        78 conhost.exe 58->78         started        80 5 other processes 58->80 process16 file17 96 C:\Windows\SystemTemp\...\conhost.exe, PE32 62->96 dropped 98 C:\...\qhAYtHqpLwMtYPvNCiRpPFUzrQUuXP.exe, PE32 62->98 dropped 100 C:\Recovery\powershell.exe, PE32 62->100 dropped 102 7 other malicious files 62->102 dropped 158 Antivirus detection for dropped file 62->158 160 Machine Learning detection for dropped file 62->160 162 Creates processes via WMI 62->162 signatures18
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf
Gathering data
Threat name:
ByteCode-MSIL.Trojan.Cassiopeia
Create hunting rule
Status:
Malicious
First seen:
2024-03-29 19:42:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jzgngpj7urodddpdv2ykb4ouhgu5l6uu7ablycynp35dcdjdfhhq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://tria.ge/reports/240403-3y1rcsgf8x/
Behaviour
Suspicious use of AdjustPrivilegeToken
Looks up external IP address via web service
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/4e4cd33d3fa45c318de3aeb0a0f1d439a9d5fa94f802bc0b0d7efa310d2329cf

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:BAZT_B5_NOCEXInvalidStream
Create hunting rule
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
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.

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 (HIGH_ENTROPY_VA)high

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