MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e
SHA3-384 hash: 46b5e28ae1479a1ab508c219c97dce281244f8707175b38b73e6ce59761de084dad009a197960f7ac98b3388805a8b64
SHA1 hash: d8f3b54f4586ac682a013650f4350b4c9a9955a7
MD5 hash: a7c0c2333b7e07057647b6dcc1d0d5ac
humanhash: illinois-enemy-fifteen-west
File name:a7c0c2333b7e07057647b6dcc1d0d5ac.exe
Download: download sample
Signature njrat
Create hunting rule
File size:97'792 bytes
First seen:2023-02-07 00:40:35 UTC
Last seen:2023-02-07 02:53:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'835 x AgentTesla, 19'772 x Formbook, 12'296 x SnakeKeylogger)
ssdeep 1536:6pvTI4X0UkJ2fe8o2VLWjOnZvU6l2MBnlLn/aaAqMnjkP:6pvE4uJ2Q2kFOZhZP
Threatray 3'393 similar samples on MalwareBazaar
TLSH T1BFA3101125FF405DF3A79BB20FD4F8BF8AAAE873161AB1B53A5017468722E008D52776
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon a064a1c9199a8fe6 (1 x njrat)
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
197.202.206.220:9090

Intelligence

File Origin
# of uploads :
2
# of downloads :
236
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
a7c0c2333b7e07057647b6dcc1d0d5ac.exe
Verdict:
Malicious activity
Analysis date:
2023-02-07 00:42:48 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/2401c485-3baa-45b3-a721-62d30f7b67ca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/361138/
Detection(s):
PUA.Win.Packer.NETCrypter-6309687-2
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Сreating synchronization primitives
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Searching for synchronization primitives
Creating a process with a hidden window
DNS request
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
bladabindi packed
Link:
https://www.filescan.io/uploads/63e19e1e447edb203a02f631/reports/cb2322af-f658-473a-b1f0-c2c1785510f7/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/62cf2a7d-3607-461b-9de0-5b96f92a483a
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1167187
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Drops PE files to the startup folder
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Uses dynamic DNS services
Uses netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 799954 Sample: bFZM2iaoLw.exe Startdate: 07/02/2023 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 Antivirus detection for dropped file 2->38 40 9 other signatures 2->40 8 bFZM2iaoLw.exe 1 5 2->8         started        11 taskmgr.exe 3 2->11         started        13 taskmgr.exe 2 2->13         started        15 taskmgr.exe 2 2->15         started        process3 file4 28 C:\Users\user\AppData\Local\...\taskmgr.exe, PE32 8->28 dropped 30 C:\Users\user\AppData\...\bFZM2iaoLw.exe.log, ASCII 8->30 dropped 17 taskmgr.exe 4 3 8->17         started        process5 dnsIp6 32 gololosd.ddns.net 197.202.206.220, 9090 ALGTEL-ASDZ Algeria 17->32 26 C:\...\151fd47f794ef2318b946b794bcd6603.exe, PE32 17->26 dropped 42 Antivirus detection for dropped file 17->42 44 Multi AV Scanner detection for dropped file 17->44 46 Protects its processes via BreakOnTermination flag 17->46 48 5 other signatures 17->48 22 netsh.exe 3 17->22         started        file7 signatures8 process9 process10 24 conhost.exe 22->24         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2023-02-05 01:40:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
22 of 39 (56.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xaptadxr36vh6xb5fpapuv5fxv2fg7wm72svbxpujpskgdbzofha._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
22cd2928145df3e4a40db97a5e6ec531a5f18720d6c44122067abeba33efe7e7
njrat
4429abcc87b519e564fb443eac261da3f2976056c87a61a55c177c46c72cd474
njrat
4b4a624f6ed9e08abee909ae1ba1d8cd9cedb2adc4fea2e9866eb1958be63119
njrat
585b9a5e3aac2aa59c5741bc7f56029aeea7c00dd870dc6064f856c84bc70262
njrat
b017cdb6f137cd3e72e7524470ebf2ff2712cc5f78db58d6eb87b15b4a84184f
njrat
cf75d51ec31d817017d71dbe8def69d443e4ecca131e70ca6252ebc455e065a2
njrat
+ 3'383 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion persistence trojan
Link:
https://tria.ge/reports/230207-a1rx1sbh3v/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
gololosd.ddns.net:9090
Unpacked files
SH256 hash:
8e011f574454b5e4bf06c42aac26f399bed235c0253c69f39c38fcfbe63cb016
MD5 hash:
dab3a9d2ec7f2670f8718a9e702f09c1
SHA1 hash:
7a34ae5eeab56ca73768142738f0b5600da1615e
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/54ababa4-1fb4-4c0d-9368-33bf06b0ee3d/
SH256 hash:
b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e
MD5 hash:
a7c0c2333b7e07057647b6dcc1d0d5ac
SHA1 hash:
d8f3b54f4586ac682a013650f4350b4c9a9955a7
Link:
https://www.unpac.me/results/54ababa4-1fb4-4c0d-9368-33bf06b0ee3d/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b81f300ef1df/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.58
Link:
https://yomi.yoroi.company/submissions/b81f300ef1dfaa7f5c3d2bc0fa57a5bd74537eccfea550ddf44be4a30c39714e

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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.

Cape
Cape
https://www.capesandbox.com/analysis/361138/

Comments