MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fd6a7faf8f2b5bf6c0a10f99307adcfff6d578e57702379ae1452f46b1719a8d. 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: 12
| SHA256 hash: | fd6a7faf8f2b5bf6c0a10f99307adcfff6d578e57702379ae1452f46b1719a8d |
|---|---|
| SHA3-384 hash: | b55eb04c9a3916eb1579288927942e5d257e4ca9b1d959550c62eb7a0e0831902211f71f3d58c27dd705c6b87b55039f |
| SHA1 hash: | cdcdc563dafeb93725a52c5b483531cd1c786644 |
| MD5 hash: | d885eb00869c124967d20702c67177da |
| humanhash: | foxtrot-north-iowa-bravo |
| File name: | d885eb00869c124967d20702c67177da |
| Download: | download sample |
| Signature | njrat |
| File size: | 800'768 bytes |
| First seen: | 2022-03-01 09:46:54 UTC |
| Last seen: | 2022-03-01 13:13:40 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 24576:xiuLYCKKNAbwscCZUod+BemQtKOKD3kiQQdWP:xiuLY7WAbLcBoOo8OKD4 |
| Threatray | 125 similar samples on MalwareBazaar |
| TLSH | T1B205121063FC894DE2FA637858B5B5A94B71FD01AD32D32E468068CD2E72BC1CE59B17 |
| File icon (PE): |  |
| dhash icon | b830b6ec6474d898 (1 x njrat, 1 x LummaStealer) |
| Reporter |  zbetcheckin |
| Tags: | 32 exe NjRAT |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 23.226.130.229:2028 | https://threatfox.abuse.ch/ioc/391564/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
275
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Result
Verdict:
Malware
Maliciousness:
Behaviour
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file in the Windows subdirectories
Sending a custom TCP request
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Sending an HTTP GET request
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a single autorun event
Forced shutdown of a system process
Adding exclusions to Windows Defender
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
control.exe explorer.exe greyware hacktool obfuscated packed replace.exe
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:
njRAT
Verdict:
Malicious
Result
Threat name:
AsyncRAT Njrat
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to hide user accounts
Creates an autostart registry key pointing to binary in C:\Windows
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Injects a PE file into a foreign processes
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)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Bypass UAC via CMSTP
Sigma detected: File Created with System Process Name
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspcious CLR Logs Creation
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Njrat
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.KryptikAGen
Status:
Malicious
First seen:
2022-03-01 09:47:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
17 of 27 (62.96%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
agenttesla
Similar samples:
+ 115 additional samples on MalwareBazaar
Result
Malware family:
njrat
Score:
10/10
Tags:
family:njrat botnet:4k4nch4w4 evasion persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
Windows security modification
Executes dropped EXE
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NirSoft WebBrowserPassView
Nirsoft
Windows security bypass
njRAT/Bladabindi
Malware Config
C2 Extraction:
oluakachuks.linkpc.net:2028
Unpacked files
SH256 hash:
fd6a7faf8f2b5bf6c0a10f99307adcfff6d578e57702379ae1452f46b1719a8d
MD5 hash:
d885eb00869c124967d20702c67177da
SHA1 hash:
cdcdc563dafeb93725a52c5b483531cd1c786644
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
0.90
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: | CN_disclosed_20180208_c |
|---|---|
| Author: | Florian Roth |
| Description: | Detects malware from disclosed CN malware set |
| Reference: | https://twitter.com/cyberintproject/status/961714165550342146 |
| Rule name: | CN_disclosed_20180208_c_RID2E71 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects malware from disclosed CN malware set |
| Reference: | https://twitter.com/cyberintproject/status/961714165550342146 |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse |
|---|---|
| Author: | ditekSHen |
| Description: | Detects file containing reversed ASEP Autorun registry keys |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_attrib |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables using attrib with suspicious attributes attributes |
| Rule name: | malware_Njrat_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect njRAT in memory |
| Rule name: | MALWARE_Win_NjRAT |
|---|---|
| Author: | ditekSHen |
| Description: | Detects NjRAT / Bladabindi |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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