MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07
SHA3-384 hash: 8ad50aaeebd0e76f52e83a71e77f0e61bcbf389ddf1031cd22004743ac352c971ed05fd6c4ea9c4f772ac5890ad3ed7b
SHA1 hash: cf9518f4bd3cf94ab7225423e4365f4a262a9c61
MD5 hash: 6b47add2cf208a988c57c8f00461de0b
humanhash: alabama-mike-louisiana-kitten
File name:xSpoofer-new.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:7'373'824 bytes
First seen:2024-04-02 08:39:26 UTC
Last seen:2024-04-08 05:58:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 196608:oA+bmZgkjTKD4C4+e4YcJE4AcnPmP99j+zE/k:oAEGZjTvC4EtAcPmPJ/
TLSH T118762281AE7CEC75FAC8C4B8E484B351E2507E727CCAB136D4163F65A1FBC178889625
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 7071f0f0e0e86970 (1 x Formbook)
Reporter JAMESWT_WT
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
476
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07.exe
Verdict:
Malicious activity
Analysis date:
2024-04-02 08:47:35 UTC
Tags:
evasion xworm remote
Link:
https://app.any.run/tasks/35fe5eb8-721b-4521-8037-4dcafabd5523

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
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Searching for analyzing tools
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)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Changing the hosts file
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07
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.
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/00c72cc9-f509-418e-b8f2-57ef70187b88
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1418615
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
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Detected unpacking (changes PE section rights)
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the context of a thread in another process (thread injection)
Modifies the hosts file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Powershell is started from unusual location (likely to bypass HIPS)
Protects its processes via BreakOnTermination flag
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Query firmware table information (likely to detect VMs)
Reads the Security eventlog
Reads the System eventlog
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to evade debugger and weak emulator (self modifying code)
Uses known network protocols on non-standard ports
Yara detected Generic Downloader
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1418615 Sample: xSpoofer-new.exe Startdate: 02/04/2024 Architecture: WINDOWS Score: 100 69 xboxlive.com 2->69 71 user.auth.xboxlive.com 2->71 73 2 other IPs or domains 2->73 81 Snort IDS alert for network traffic 2->81 83 Found malware configuration 2->83 85 Malicious sample detected (through community Yara rule) 2->85 87 17 other signatures 2->87 9 xSpoofer-new.exe 4 2->9         started        12 rundll32.exe 2->12         started        14 rundll32.exe 2->14         started        16 3 other processes 2->16 signatures3 process4 file5 65 C:\Users\user\AppData\...\xSpoofer-new.exe, PE32+ 9->65 dropped 67 C:\Users\user\AppData\Roaming\XClient.exe, PE32 9->67 dropped 18 xSpoofer-new.exe 1 9->18         started        22 XClient.exe 14 6 9->22         started        process6 dnsIp7 61 C:\Windows\System32\drivers\etc\hosts, ASCII 18->61 dropped 89 Antivirus detection for dropped file 18->89 91 Multi AV Scanner detection for dropped file 18->91 93 Detected unpacking (changes PE section rights) 18->93 101 7 other signatures 18->101 25 xSpoofer-new.exe 18->25         started        29 xSpoofer-new.exe 18->29         started        31 xSpoofer-new.exe 1 18->31         started        41 15 other processes 18->41 75 210.246.215.82, 49709, 7000 SAMART-INFONET-ASSamartInfonetCoLtdTH Thailand 22->75 77 ip-api.com 208.95.112.1, 49700, 80 TUT-ASUS United States 22->77 63 C:\ProgramData\WindowsNT.exe, PE32 22->63 dropped 95 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 22->95 97 Protects its processes via BreakOnTermination flag 22->97 99 Machine Learning detection for dropped file 22->99 103 3 other signatures 22->103 33 powershell.exe 22->33         started        35 powershell.exe 22->35         started        37 powershell.exe 22->37         started        39 powershell.exe 22->39         started        file8 signatures9 process10 dnsIp11 79 159.65.137.18, 1335, 49702 DIGITALOCEAN-ASNUS United States 25->79 105 Query firmware table information (likely to detect VMs) 25->105 107 Hides threads from debuggers 25->107 109 Found direct / indirect Syscall (likely to bypass EDR) 25->109 111 Tries to detect sandboxes / dynamic malware analysis system (registry check) 25->111 43 conhost.exe 25->43         started        113 Powershell is started from unusual location (likely to bypass HIPS) 29->113 115 Reads the Security eventlog 29->115 117 Reads the System eventlog 29->117 45 conhost.exe 29->45         started        47 conhost.exe 31->47         started        49 conhost.exe 33->49         started        51 conhost.exe 35->51         started        53 conhost.exe 37->53         started        55 conhost.exe 39->55         started        57 conhost.exe 41->57         started        59 13 other processes 41->59 signatures12 process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07/
Threat name:
ByteCode-MSIL.Trojan.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2024-04-01 13:52:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xfidmnppewsyir3pogveuailhf4o4bhivfloqefxdmc3x3zsxmdq._file
Verdict:
malicious
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm evasion rat themida trojan
Link:
https://tria.ge/reports/240402-kkwalsce65/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Looks up external IP address via web service
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Themida packer
Drops file in Drivers directory
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Detect Xworm Payload
Xworm
Malware Config
C2 Extraction:
210.246.215.82:7000
Unpacked files
SH256 hash:
3c468ad439464cebe619052e06cf797b296ab0d9bcf88d475fb5c9b42b489573
MD5 hash:
626eb43e3611e3217f8602f7b8206889
SHA1 hash:
358935565a0a495a62559b204b7b41cbc365d8d9
Detections:
MALWARE_Win_XWorm
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
Link:
https://www.unpac.me/results/9fdba72f-01ef-4a90-b304-0153710109db/
SH256 hash:
b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07
MD5 hash:
6b47add2cf208a988c57c8f00461de0b
SHA1 hash:
cf9518f4bd3cf94ab7225423e4365f4a262a9c61
Link:
https://www.unpac.me/results/9fdba72f-01ef-4a90-b304-0153710109db/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b9503635ef25/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/b9503635ef25a584476f71aa4a010b3978ee04e8a956e810b71b05bbef32bb07

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:pe_imphash
Create hunting rule
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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