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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286. 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


XWorm


Vendor detections: 15


Intelligence 15 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286
SHA3-384 hash: 1d0c218a08f986924b8ea930832af46822148393ca8bee49d0823984d711f7daea003c5bcdd76a14ca53e388ef5b042d
SHA1 hash: e25fba40cf996737b35b4cbdef7b526eee0cc7b9
MD5 hash: c8ee22cec0d9937ca9771b495c9efe7d
humanhash: jupiter-avocado-sweet-dakota
File name:RFQ-AL BAYAN HEALTH CARE SOLUTIONS-TECHNICAL SPECIICATION_XLSX.COM.com
Download: download sample
Signature XWorm
Create hunting rule
File size:645'632 bytes
First seen:2026-09-29 07:48:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'272 x AgentTesla, 20'616 x Formbook, 12'394 x SnakeKeylogger)
ssdeep 12288:XZUB+AYKSxHmQZW4RkwIXEUcF4LXJ7VLiH9//cM4FoxoBQh:2Au+1hkxsqXJBLid//4/BQ
TLSH T1DCD4F1146778EB16D1BA0BF81971F23A07F56E4D9420D31A4FE9FCEB3D22B056A44293
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter threatcat_ch
Tags:exe xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
229
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Link:
https://research.acce.ciphertechsolutions.com/results/261b14ea-63ff-4f78-9c86-f5ceb433a6d9/
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-09-29 07:56:18 UTC
Tags:
auto-startup xworm stealer
Link:
https://app.any.run/tasks/d192af1c-3e6d-4bd8-a5c9-55d75dcd21df

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/89615/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.76555475.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ac0bb5e4e97199d5892c1e7
Tags:
infosteal stration micro shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Creating a file in the %AppData% directory
DNS request
Connection attempt
Setting a global event handler for the keyboard
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
bitmap masquerade packed packed packer stego
Link:
https://www.filescan.io/uploads/6abb6d7a6db45f4f3dd3023e/reports/83bb58d9-d0fb-4351-aedd-e69af702069a/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-09-29T04:13:00Z UTC
Last seen:
2026-10-01T06:20:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/07d5cf2b-1c88-4b51-bc3d-ca7d569b1c3d
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1979289
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
Yara detected AntiVM3
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.34 Win 32 Exe x86
Link:
https://app.malva.re/file/c8ee22cec0d9937ca9771b495c9efe7d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2026-09-29 06:52:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=riuljejal4t3cenvzbi5vmnc7o54kdyctbnckq3tmikxzdbpokda._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution persistence privilege_escalation
Link:
https://tria.ge/reports/260929-jnr7pavbld/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Enumerates connected drives
Checks computer location settings
Creates a file in the Startup directory
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286
MD5 hash:
c8ee22cec0d9937ca9771b495c9efe7d
SHA1 hash:
e25fba40cf996737b35b4cbdef7b526eee0cc7b9
Link:
https://www.unpac.me/results/07420bb1-50cf-4246-9f75-9937a87fbbf8/
SH256 hash:
cb32dba898acc1b7559d4518a688d37369292b5e816f9f83a5ac00bedc682cb2
MD5 hash:
3c71a1817a09645858f06bda686f13d2
SHA1 hash:
47cbac86cd1d0c59898ce18da5706e1aa4409ea5
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/07420bb1-50cf-4246-9f75-9937a87fbbf8/
Parent samples :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 hash:
93fe6c8e9c05fca149fe2a7ec02cdca59f05d4f0b4170a4bfede4e8cb3e972a0
MD5 hash:
1d00892ec9668826a3d323af0b3442bd
SHA1 hash:
545ebb1f9e4d3247b01feeea1b49ce79b8a7f097
Link:
https://www.unpac.me/results/07420bb1-50cf-4246-9f75-9937a87fbbf8/
SH256 hash:
7840428792a2b7c89d5d5be1120762adba1c8f8ad13f0804f1e4011f143c5f2e
MD5 hash:
b0b061776a457bb5eab39b14ca767217
SHA1 hash:
b20e8f9235ef0d63ea92cf2c80e81ae49e6b7327
Link:
https://www.unpac.me/results/07420bb1-50cf-4246-9f75-9937a87fbbf8/
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/8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286

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:HUNT_NET_Loader_ImagePixel_To_AssemblyLoad
Create hunting rule
Author:Anish Bogati
Description:Hunting: .NET loader that reads pixel data from an embedded image, loads it as a .NET assembly, and runs it via reflection or late binding. Catches bitmap-steganography loaders.
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:WIN_Sample_Unique_69354b41
Create hunting rule
Author:Marjoriefort
Description:Specimen unique (soumission Bazaar) - strings distinctifs propres au sample
Reference:69354b41e10daf03d3f3af881b32d5c0fec56b1cfe96629fd4c5263413a42854.exe

File information

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

Malspam

XWorm

Executable exe 8a28b491205f27b111b5c851dab1a2fbbbc50f02985a25437362157c8c2f7286

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/89615/

Comments