MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4c0999fd58331d7b3f971f3bfe4351b500d086eac555b81a5e7c7c41cb3eae8b. 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: 18
| SHA256 hash: | 4c0999fd58331d7b3f971f3bfe4351b500d086eac555b81a5e7c7c41cb3eae8b |
|---|---|
| SHA3-384 hash: | c78ae749af7dce6797a49261ddccce689b981f913d0f28cd5c52b93ed69575f75c97fa57d82ec2e29b1783202d93ecec |
| SHA1 hash: | bc307ff0a5c99c1b28190b0143050e65e422cd70 |
| MD5 hash: | fc0bf0571f17febe7fa85a759e41fa56 |
| humanhash: | connecticut-stream-missouri-south |
| File name: | fc0bf0571f17febe7fa85a759e41fa56.exe |
| Download: | download sample |
| Signature | XWorm |
| File size: | 2'672'110 bytes |
| First seen: | 2025-08-20 13:30:30 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 112bfbb18727302cb5425c20a464b02e (52 x XWorm, 2 x AsyncRAT) |
| ssdeep | 49152:T0o5663XqIl475RXcwviBeHBKFRgF1/F0DX3I:TH6sqmYNdHBeRg7tIX4 |
| Threatray | 91 similar samples on MalwareBazaar |
| TLSH | T1D5C501017AED00FAE2B3973589E28992DBF77D6687205FCF02D04D0A2E675D0E879725 |
| TrID | 32.2% (.EXE) Win64 Executable (generic) (10522/11/4) 20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 15.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 13.7% (.EXE) Win32 Executable (generic) (4504/4/1) 6.2% (.EXE) OS/2 Executable (generic) (2029/13) |
| Magika | pebin |
| Reporter |  abuse_ch |
| Tags: | exe xworm |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 147.185.221.31:14210 | https://threatfox.abuse.ch/ioc/1571671/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
86
Origin country :
NLVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
fc0bf0571f17febe7fa85a759e41fa56.exe
Verdict:
Malicious activity
Analysis date:
2025-08-20 13:33:00 UTC
Tags:
pastebin auto-reg auto-startup auto xworm rat remote
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XWorm
Verdict:
Malicious
Score:
99.9%
Tags:
asyncrat autorun ddos
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file
Creating a process from a recently created file
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% subdirectories
Modifying an executable file
Creating a file in the Program Files subdirectories
Creating a window
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Connection attempt to an infection source
Using the Windows Management Instrumentation requests
Delayed writing of the file
Unauthorized injection to a recently created process
Enabling autorun with the shell\open\command registry branches
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Sending a TCP request to an infection source
Infecting executable files
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
fingerprint microsoft_visual_cc obfuscated overlay packed packed packer_detected
Verdict:
Malicious
Labled as:
Trojan.Generic
Malware family:
XWorm
Verdict:
Malicious
Result
Threat name:
XWorm
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Creates an undocumented autostart registry key
Drops executable to a common third party application directory
Drops or copies MsMpEng.exe (Windows Defender, likely to bypass HIPS)
Drops PE files to the document folder of the user
Found evasive API chain checking for user administrative privileges
Found malware configuration
Infects executable files (exe, dll, sys, html)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
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: Files With System Process Name In Unsuspected Locations
Sigma detected: System File Execution Location Anomaly
Suricata IDS alerts for network traffic
Yara detected XWorm
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Verdict:
Malicious
Threat:
Family.XWORM
Threat name:
Win64.Backdoor.Xworm
Status:
Malicious
First seen:
2025-08-11 18:10:00 UTC
File Type:
PE+ (Exe)
Extracted files:
120
AV detection:
20 of 24 (83.33%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
xworm
Similar samples:
+ 81 additional samples on MalwareBazaar
Result
Malware family:
xworm
Score:
10/10
Tags:
family:xworm discovery persistence rat spyware stealer trojan
Behaviour
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Adds Run key to start application
Enumerates connected drives
Legitimate hosting services abused for malware hosting/C2
Drops startup file
Executes dropped EXE
Modifies system executable filetype association
Reads user/profile data of web browsers
Detect Xworm Payload
Xworm
Xworm family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
4c0999fd58331d7b3f971f3bfe4351b500d086eac555b81a5e7c7c41cb3eae8b
MD5 hash:
fc0bf0571f17febe7fa85a759e41fa56
SHA1 hash:
bc307ff0a5c99c1b28190b0143050e65e422cd70
SH256 hash:
43070052921b1c7b14c2d08ce6adf555973a61055f114c94ce64919d9762b6f6
MD5 hash:
c9b738f15a680763a8869fa03b3eff59
SHA1 hash:
7073f95ddb3ae6acb7fc622662d1445c25d6898e
Malware family:
XWorm
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CP_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | meth_stackstrings |
|---|---|
| Author: | Willi Ballenthin |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (GUARD_CF) | high |
Reviews
| ID | Capabilities | Evidence |
|---|---|---|
| WIN32_PROCESS_API | Can Create Process and Threads | KERNEL32.dll::CreateProcessW KERNEL32.dll::CloseHandle |
| WIN_BASE_API | Uses Win Base API | KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDriveTypeA KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW KERNEL32.dll::GetCommandLineA |
| WIN_BASE_EXEC_API | Can Execute other programs | KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleMode |
| WIN_BASE_IO_API | Can Create Files | KERNEL32.dll::CopyFileA KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileA KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::GetFileAttributesA |
| WIN_REG_API | Can Manipulate Windows Registry | ADVAPI32.dll::RegCreateKeyExA ADVAPI32.dll::RegSetValueExA |
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