MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110
SHA3-384 hash: 407c66423ec732f2a12a98d64d12f98550162693052338a25eae42d32651cb32fd7856871bf4f54cedea219a123fa458
SHA1 hash: 6d0c8612613f051e23d7dc149e4b9d3f73092bc9
MD5 hash: 4c2d28daa675d7f578a1c993c07c06c3
humanhash: stream-floor-nitrogen-one
File name:prTzCeZy.exe
Download: download sample
Signature njrat
Create hunting rule
File size:37'888 bytes
First seen:2020-09-23 05:47:41 UTC
Last seen:2020-10-02 14:47:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 384:hhCCiM0B63fbw6ZfrZUy8f4QvL4gSFQVCrAF+rMRTyN/0L+EcoinblneHQM3epzt:LE0DwODZX8f4QsFQcrM+rMRa8Nu4Mt
Threatray 53 similar samples on MalwareBazaar
TLSH 2803294D7BE181A8C5FD167B05B2D41307BAE04B6E23D90E8EE564EA37636C18F50AF1
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
125
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/64688/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Win.Packed.Generic-7672854-0
Create hunting rule

Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Bladabindi-7994427-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for analyzed file
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Enabling the 'hidden' option for files in the %temp% directory
Enabling the 'hidden' option for recently created files
Creating a window
DNS request
Sending a UDP request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Creating a file in the mass storage device
Connection attempt to an infection source
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices by creating the autorun.inf autorun file
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/473010
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
Drops PE files with benign system names
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 netsh to modify the Windows network and firewall settings
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 288948 Sample: prTzCeZy.exe Startdate: 23/09/2020 Architecture: WINDOWS Score: 100 41 libahaw992-33920.portmap.io 2->41 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for dropped file 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 13 other signatures 2->53 9 prTzCeZy.exe 1 6 2->9         started        12 Java Servise.exe 3 2->12         started        14 Java Servise.exe 2 2->14         started        16 Java Servise.exe 2 2->16         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\Java Servise.exe, PE32 9->35 dropped 37 C:\Users\...\Java Servise.exe:Zone.Identifier, ASCII 9->37 dropped 39 C:\Users\user\AppData\...\prTzCeZy.exe.log, ASCII 9->39 dropped 18 Java Servise.exe 2 12 9->18         started        process6 dnsIp7 43 libahaw992-33920.portmap.io 193.161.193.99, 33920, 49714, 49718 BITREE-ASRU Russian Federation 18->43 45 192.168.2.1 unknown unknown 18->45 27 C:\svchost.exe, PE32 18->27 dropped 29 C:\...\758a6a5da1bcb5fcf3ec44f2afc3d15d.exe, PE32 18->29 dropped 31 C:\svchost.exe:Zone.Identifier, ASCII 18->31 dropped 33 2 other malicious files 18->33 dropped 55 Protects its processes via BreakOnTermination flag 18->55 57 Creates autorun.inf (USB autostart) 18->57 59 Creates autostart registry keys with suspicious names 18->59 23 netsh.exe 3 18->23         started        file8 signatures9 process10 process11 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-23 05:49:06 UTC
AV detection:
28 of 29 (96.55%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wnkp5j4r2bmxhzszs7u66sy6gi2zzxegw226hdtuls5oiniw4eia._file
Verdict:
malicious
Similar samples:
14262b3cd2627ba46dca74fa62e17a3ecb3853982a81a8e39a0c41a5077974c4
njrat
27f7e212954191d2fc10676ad69942421e904a5719cb2001149de2bb38c0610f
njrat
62a5cd1fc65cdb2b773565e9861a48f139ee961156b38e26016c28a23fc896cc
njrat
6739301df01608fd2317175f72add2c77d998e16d5b37b30c6940a468a478d7a
njrat
674e6af13bc6b40d023c0d9306b7ba538f8dc7110da48067174858b605851aa1
njrat
848d738d56a8b14c89c4ffea4bdba3390d70004c081785de07af4fc541f146ec
njrat
9d1f32d9806bafd63451a59e1768502f31cf9dc746c9e92f62b978c1ed259497
njrat
b3bb77a17e54a662b6fed76d2537ad3a27ec2ab051f913a9aa1207219d96c30f
njrat
dc7f689cc6adbf5d8e36008390ed2a79d59d0d3411f9e353ddacf236e695a615
njrat
ed34d4eba0bc7d434f32bb9bca0147632592656ddf0c2aa892fbee54b0850ff1
njrat
+ 43 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/200923-przp4hxfce/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops autorun.inf file
Modifies service
Drops autorun.inf file
Adds Run key to start application
Adds Run key to start application
Drops startup file
Loads dropped DLL
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Executes dropped EXE
Modifies Windows Firewall
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110

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:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

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

Web download

njrat

Executable exe b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110

(this sample)

  
Link
https://www.virustotal.com/gui/file/b354fea791d05973e65997e9ef4b1e32359cdc86b6b5e38e745cbae43516e110/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/64688/

Comments