MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b3904b9f42cb877e8534f96ad1519abb4f3bcb772c38d8ac5e1101fbbd575cce. 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
njrat
Vendor detections: 11
| SHA256 hash: | b3904b9f42cb877e8534f96ad1519abb4f3bcb772c38d8ac5e1101fbbd575cce |
|---|---|
| SHA3-384 hash: | cb085e5f9bb3ab2bd9f0e6bff2f399074583687c5fc6f71c193c0dc325cd5293140e1bfc7719d182124f67a8eccc7302 |
| SHA1 hash: | ead16831e232b9d43fe071148e738d20bbe76941 |
| MD5 hash: | 9ba9b5e30a963ccc4333645d2a3519e9 |
| humanhash: | may-march-oscar-sodium |
| File name: | b3904b9f42cb877e8534f96ad1519abb4f3bcb772c38d8ac5e1101fbbd575cce |
| Download: | download sample |
| Signature | njrat |
| File size: | 889'344 bytes |
| First seen: | 2026-08-10 14:36:49 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'190 x AgentTesla, 20'337 x Formbook, 12'364 x SnakeKeylogger) |
| ssdeep | 24576:ocIp50Vl482mYC06sbKycdMNki382E+IYm9:ocIpkB2pbWMD82tIYm9 |
| TLSH | T12115F04023A68D52E0F68BF6B8B0D37532A45DCF78E2D2955FE91FFB38253815464392 |
| 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 |  adrian__luca |
| Tags: | exe NjRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
49
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
RoboSki
Details
Gathering data
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a 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% subdirectories
Enabling the 'hidden' option for recently created files
DNS request
Setting a global event handler for the keyboard
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
entropy packed vbnet
Verdict:
Malicious
Labled as:
Trojan.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-07-21T19:23:00Z UTC
Last seen:
2026-08-10T04:41:00Z UTC
Hits:
~100
Gathering data
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Status:
Malicious
First seen:
2026-07-22 02:21:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
27 of 36 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
XWorm
Result
Malware family:
xworm
Score:
10/10
Tags:
family:siriusrat family:xworm collection discovery persistence privilege_escalation rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Creates a file in the Startup directory
Executes dropped EXE
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Detect Xworm Payload
Detects SiriusRAT
Family: SiriusRAT
Family: Xworm
Unpacked files
SH256 hash:
b3904b9f42cb877e8534f96ad1519abb4f3bcb772c38d8ac5e1101fbbd575cce
MD5 hash:
9ba9b5e30a963ccc4333645d2a3519e9
SHA1 hash:
ead16831e232b9d43fe071148e738d20bbe76941
SH256 hash:
36e6e085c86dd2f549b136c0ea9d97b755a2b254aa39f44524fca92417baccf6
MD5 hash:
85a7d07787ffdff80765753f8215e023
SHA1 hash:
305c0ba5003e7a02dc373898263da6a8dbecb328
SH256 hash:
fdf12cd22d7f0b61971b171f7db2760cd293ecd61e2f5934a1d2dfb48ea8ee5d
MD5 hash:
b7a7709f7b4cb743eab5abc9d5052117
SHA1 hash:
83d21297d20f44ff160fb07c39b904c2cfe6254e
SH256 hash:
e4e98c56847f65b0ec79dd0fcd73f780be8e5b64a78def50b3d447c6a22aab6d
MD5 hash:
3e279146474e41a20e10d71196dea18c
SHA1 hash:
c3abd761f47fc10a6e546d214517de85e1cb64a0
SH256 hash:
b3904b9f42cb877e8534f96ad1519abb4f3bcb772c38d8ac5e1101fbbd575cce
MD5 hash:
9ba9b5e30a963ccc4333645d2a3519e9
SHA1 hash:
ead16831e232b9d43fe071148e738d20bbe76941
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
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: | Detect_PowerShell_Obfuscation |
|---|---|
| Author: | daniyyell |
| Description: | Detects obfuscated PowerShell commands commonly used in malicious scripts. |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | Njrat |
|---|---|
| Author: | botherder https://github.com/botherder |
| Description: | Njrat |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
| Rule name: | Windows_Trojan_XWorm_b7d6eaa8 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_dotnet_vb_stealer_rat |
|---|---|
| Author: | Arrbat |
| Description: | Detects .NET/VB executables with stealer/RAT capabilities (sockets, HTTP, processes, registry, etc). |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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