MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1. 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: 15


Intelligence 15 IOCs 1 YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1
SHA3-384 hash: 0c0449ccaae53c833786208173942c00981e140014e2af767e0ee5ec185e298a8b58534488800d8e13a4183f5fccbe88
SHA1 hash: 8fecb37b06dd016f820cbc55c1446aa34666bf12
MD5 hash: 2bdf60ce1391ccc1a829a41c8b531dd5
humanhash: freddie-september-burger-paris
File name:2bdf60ce1391ccc1a829a41c8b531dd5.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:48'234'496 bytes
First seen:2024-06-27 00:10:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d59a4a699610169663a929d37c90be43 (76 x DCRat, 22 x njrat, 17 x SalatStealer)
ssdeep 24576:f5r3oaR/k4XDG/BcoNWmt2G/nvxW3Ww0tXegr2pdxgLHw8dQefBkrzCL7:dmtbA30XeY6o/QAU+L
Threatray 870 similar samples on MalwareBazaar
TLSH T16BB759013E45CA12F41E1633D2EF854887B1A8516AE6F31B7DBD36AD55223937C0EACB
TrID 63.6% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
13.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
10.3% (.EXE) InstallShield setup (43053/19/16)
3.4% (.EXE) Win32 Executable Delphi generic (14182/79/4)
3.1% (.SCR) Windows screen saver (13097/50/3)
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Formbook C2:
http://a0996805.xsph.ru/_Defaultwindows.php

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://a0996805.xsph.ru/_Defaultwindows.php https://threatfox.abuse.ch/ioc/1289552/

Intelligence

File Origin
# of uploads :
1
# of downloads :
375
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
dcrat
Create hunting rule
ID:
1
File name:
06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1.exe
Verdict:
Malicious activity
Analysis date:
2024-06-27 00:13:27 UTC
Tags:
evasion rat dcrat remote darkcrystal
Link:
https://app.any.run/tasks/c47a8dc5-c6db-4a43-aeb4-58b835fbd427

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=667cae68f2a3d255454689f0win10vpnfull_triage
Tags:
Execution Network Other Stealth Trojan Msilzilla
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a window
Searching for the window
Searching for synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Launching a process
Sending an HTTP GET request
Enabling the 'hidden' option for files in the %temp% directory
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Creating a file in the Program Files subdirectories
Sending a UDP request
Connecting to a non-recommended domain
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Changing the hosts file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
90%
Tags:
anti-vm anti-vm borland_delphi cmd cscript darkkomet dcrat explorer fingerprint fingerprint hacktool lolbin lolbin overlay packed poison quasarrat rat schtasks setupapi shdocvw shell32 wmic wmic zusy
Link:
https://www.filescan.io/uploads/667cae1aea679c2da918fcaa/reports/dcd324d7-ab3d-45ab-a6d1-f23520282abe/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1
Result
Verdict:
MALICIOUS
Result
Threat name:
Blank Grabber, DCRat, Umbral Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1463369
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
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
Creates processes via WMI
Drops PE files to the startup folder
Drops PE files to the user root directory
Drops PE files with a suspicious file extension
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the hosts file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Execution from Suspicious Folder
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Schedule system process
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Startup Folder Persistence
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)
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: 1463369 Sample: mAJY4CrF1A.exe Startdate: 27/06/2024 Architecture: WINDOWS Score: 100 81 ip-api.com 2->81 83 discordapp.com 2->83 89 Found malware configuration 2->89 91 Malicious sample detected (through community Yara rule) 2->91 93 Antivirus detection for URL or domain 2->93 95 21 other signatures 2->95 11 mAJY4CrF1A.exe 4 2->11         started        15 TwBeXIVjkfKBRledc.exe 2->15         started        17 TwBeXIVjkfKBRledc.exe 2->17         started        signatures3 process4 file5 67 C:\Users\user\AppData\...\X8Checker 2.6.exe, PE32 11->67 dropped 69 C:\Users\user\AppData\Local\Temp\Umbral.exe, PE32 11->69 dropped 71 C:\Users\user\AppData\Local\...\8XChecker.exe, PE32 11->71 dropped 111 Found many strings related to Crypto-Wallets (likely being stolen) 11->111 19 8XChecker.exe 3 6 11->19         started        23 Umbral.exe 15 14 11->23         started        26 X8Checker 2.6.exe 11->26         started        28 conhost.exe 11->28         started        113 Multi AV Scanner detection for dropped file 15->113 signatures6 process7 dnsIp8 59 C:\Reviewwinbrokernet\bridgefont.exe, PE32 19->59 dropped 61 C:\Reviewwinbrokernet\86Wn4vQvMoqlspy5.vbe, data 19->61 dropped 97 Antivirus detection for dropped file 19->97 99 Multi AV Scanner detection for dropped file 19->99 101 Machine Learning detection for dropped file 19->101 30 wscript.exe 1 19->30         started        85 ip-api.com 208.95.112.1, 49737, 49739, 80 TUT-ASUS United States 23->85 87 discordapp.com 162.159.135.233, 443, 49740, 49741 CLOUDFLARENETUS United States 23->87 63 C:\ProgramData\Microsoft\...\2Nd8w.scr, PE32 23->63 dropped 65 C:\Windows\System32\drivers\etc\hosts, ASCII 23->65 dropped 103 Found many strings related to Crypto-Wallets (likely being stolen) 23->103 105 Drops PE files with a suspicious file extension 23->105 107 Drops PE files to the startup folder 23->107 109 4 other signatures 23->109 33 powershell.exe 23 23->33         started        35 WMIC.exe 1 23->35         started        37 attrib.exe 1 23->37         started        file9 signatures10 process11 signatures12 115 Windows Scripting host queries suspicious COM object (likely to drop second stage) 30->115 39 cmd.exe 30->39         started        117 Loading BitLocker PowerShell Module 33->117 41 conhost.exe 35->41         started        43 conhost.exe 37->43         started        process13 process14 45 bridgefont.exe 39->45         started        49 conhost.exe 39->49         started        file15 73 C:\Windows\...\TwBeXIVjkfKBRledc.exe, PE32 45->73 dropped 75 C:\Users\user\conhost.exe, PE32 45->75 dropped 77 C:\Users\Public\Music\TwBeXIVjkfKBRledc.exe, PE32 45->77 dropped 79 8 other malicious files 45->79 dropped 119 Antivirus detection for dropped file 45->119 121 Multi AV Scanner detection for dropped file 45->121 123 Machine Learning detection for dropped file 45->123 125 3 other signatures 45->125 51 schtasks.exe 45->51         started        53 schtasks.exe 45->53         started        55 schtasks.exe 45->55         started        57 24 other processes 45->57 signatures16 process17
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1
Gathering data
Threat name:
ByteCode-MSIL.Backdoor.DCRat
Create hunting rule
Status:
Malicious
First seen:
2024-06-21 20:19:25 UTC
File Type:
PE (Exe)
Extracted files:
31
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=a22rtg3xkmdv3egtvx25gow456nrymsu2bdru4gcqlrmye4r6gyq._file
Verdict:
malicious
Similar samples:
2f9bf1b8e047c1fa8ec80deccb3e9b575aaf5247f23c0fea81157b8b995562c9
Formbook
4b7b7e697954f5882dd6d3e8ee6197bab6c445dbd3a5af1118caa0e1ad908a9a
Formbook
5455ab06af6d8592c4b197b724301336c3d93e41e3334efa86ea27ea2a622c81
Formbook
fdef3bd7f14535f73bfcbe2741792c3c2c9cd10af69be1bd1bc1c41d5daeb71c
Formbook
+ 860 additional samples on MalwareBazaar
Result
Malware family:
umbral
Create hunting rule
Score:
  10/10
Tags:
family:dcrat family:umbral execution infostealer rat spyware stealer
Link:
https://tria.ge/reports/240627-agllwsvbql/
Behaviour
Detects videocard installed
Modifies registry class
Runs ping.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Views/modifies file attributes
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Drops file in Drivers directory
DCRat payload
DcRat
Detect Umbral payload
Process spawned unexpected child process
Umbral
Malware Config
C2 Extraction:
https://discordapp.com/api/webhooks/1253005353222668289/_twANrdJlJok9NDlMWHxe2qUewe11QbdTTPK9sqVpjZ9uRjyV2p28YwCPVaWlpRMyL50
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/06b5199b7753075d90d3adf5d33adcef9b1c3254d0471a70c282e2cc1391f1b1

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:D1S1Gv11betaD1N
Create hunting rule
Author:malware-lu
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:grakate_stealer_nov_2021
Create hunting rule
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxComputerNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM names
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxSystemUUIDs
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox system UUIDs
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxUserNames
Create hunting rule
Author:ditekSHen
Description:Detects executables containing possible sandbox analysis VM usernames
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Create hunting rule
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MALWARE_Win_UmbralStealer
Create hunting rule
Author:ditekShen
Description:Detects Umbral infostealer
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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteA
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CloseHandle
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileA
kernel32.dll::GetWindowsDirectoryA
kernel32.dll::GetSystemDirectoryA
kernel32.dll::GetTempPathA

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