MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0fa2721f9583ee945d3909290c0ead73dcf4e3cb5739a6f4423f3da6899fd602. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0fa2721f9583ee945d3909290c0ead73dcf4e3cb5739a6f4423f3da6899fd602
SHA3-384 hash: df8e603726783e3966ea76ee61d5ea05928366a7560fbbf1208df29fd6e424a6edd63fb8398880ba32cb56d9a75b930f
SHA1 hash: eb3439a00509d5e8ba99f97323cf2617d97b3106
MD5 hash: 94cd3aef83f29bb2dd6d8fe40d751603
humanhash: paris-neptune-eighteen-ceiling
File name:NEW_PURCHASE_ORDER_.exe
Download: download sample
Signature njrat
Create hunting rule
File size:289'280 bytes
First seen:2020-08-15 17:25:31 UTC
Last seen:2020-08-15 17:53:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:eWns54EcmZHyXFaxmVmie9bngPWvOHcytYdjmVT8QFn1U0laUhpyhw91lepp:eSo4EcmZHAFaxmVmie9bngPWvKtYdmV+
Threatray 221 similar samples on MalwareBazaar
TLSH 51546C853080D9A6E5E72AF2686D982013B43F8F4125DE0F3EC27B6693D73C2385664F
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
Malspam distributing njrat:

HELO: panel.medenserver.com
Sending IP: 213.159.7.220
From: sales <sales@gotechcn.com>
Subject: NEW PURCHASE ORDER
Attachment: NEW_PURCHASE_ORDER_.zip (contains "NEW_PURCHASE_ORDER_.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/46335/
Detection(s):
SecuriteInfo.com.FileRepMalware.3919.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/432068
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Protects its processes via BreakOnTermination flag
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses netsh to modify the Windows network and firewall settings
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 268445 Sample: NEW_PURCHASE_ORDER_.exe Startdate: 17/08/2020 Architecture: WINDOWS Score: 100 67 whmfix009.cf 2->67 77 Malicious sample detected (through community Yara rule) 2->77 79 Sigma detected: Scheduled temp file as task from temp location 2->79 81 Detected njRat 2->81 83 10 other signatures 2->83 10 NEW_PURCHASE_ORDER_.exe 7 2->10         started        14 invoice.exe 2->14         started        16 invoice.exe 2->16         started        18 invoice.exe 2->18         started        signatures3 process4 file5 61 C:\Users\user\AppData\Local\...\tmp40EB.tmp, XML 10->61 dropped 63 C:\Users\user\AppData\Roaming\PVXpBGEUT.exe, PE32 10->63 dropped 89 Injects a PE file into a foreign processes 10->89 20 NEW_PURCHASE_ORDER_.exe 1 2 10->20         started        23 schtasks.exe 1 10->23         started        91 Writes to foreign memory regions 14->91 25 schtasks.exe 14->25         started        27 schtasks.exe 16->27         started        29 invoice.exe 16->29         started        31 schtasks.exe 18->31         started        33 invoice.exe 18->33         started        signatures6 process7 file8 59 C:\Users\user\AppData\Roaming\invoice.exe, PE32 20->59 dropped 35 invoice.exe 5 20->35         started        38 conhost.exe 23->38         started        40 conhost.exe 25->40         started        42 conhost.exe 27->42         started        44 conhost.exe 31->44         started        process9 signatures10 85 Drops PE files to the startup folder 35->85 87 Injects a PE file into a foreign processes 35->87 46 invoice.exe 4 3 35->46         started        51 schtasks.exe 1 35->51         started        53 netsh.exe 38->53         started        process11 dnsIp12 69 whmfix009.cf 185.165.153.90, 49739, 49740, 49741 DAVID_CRAIGGG Netherlands 46->69 71 192.168.2.1 unknown unknown 46->71 65 C:\...\67c692a08f8c138aa1c442e78c2761bc.exe, PE32 46->65 dropped 73 Protects its processes via BreakOnTermination flag 46->73 75 Creates autostart registry keys with suspicious names 46->75 55 conhost.exe 51->55         started        57 conhost.exe 53->57         started        file13 signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0fa2721f9583ee945d3909290c0ead73dcf4e3cb5739a6f4423f3da6899fd602/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-15 17:27:36 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=b6rheh4vqpxjixjzbeuqydvnopopjy6lk442n5cch462ncm72yba._file
Verdict:
malicious
Similar samples:
078b1c9afd06c1090bb88657eba69d04ab283663f0f7dd400efd26abfae64451
njrat
3b0fd1cd0eb83c48df1472510556295bb1a7552deb4f935a340043a0208829ca
njrat
73608da475a8f39de003de8d1bfbc1c00e3481b0bbd2034d2e74ad949d626f99
njrat
bf1016ffb1ecdff1fa7b2b6773ee693cfc6e7e16bdfc467639fe9b60a7c9c668
njrat
c2384159db2fb98c982b2720d78622dab53020509d3889dfe91d8c3ba21e0e1c
njrat
def3e87e1a17d970c000924de61ae6f4fd93607741cc21ccd43c3198738759da
njrat
e8d6e647d8611efee71472288c0959d0e7f2950e1bbd226877872de5fc4beeab
njrat
f3df7d3bb9a05ff881cec0a5947916d08030d2424c8a233820dff5e92a95f4a5
njrat
f5c20b9e96fde1f84b7578a3f29a00f96e161c9bbdfac2675fcd253b41627a9e
njrat
f8113167cfaf623d5c08b33685577743fb96bd3daca2cd915d8b3efe81ad3a8b
njrat
+ 211 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
evasion persistence trojan family:njrat
Link:
https://tria.ge/reports/200815-nh6rxqjrj2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies service
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/0fa2721f9583ee945d3909290c0ead73dcf4e3cb5739a6f4423f3da6899fd602

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:CN_disclosed_20180208_c
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences
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.

Malspam

njrat

zip 010f5f978596f99377d06c9a6e7b982def7c5cbb857e091af1a3f68c27295bc9

njrat

Executable exe 0fa2721f9583ee945d3909290c0ead73dcf4e3cb5739a6f4423f3da6899fd602

(this sample)

  
Dropped by
MD5 91bbdd26320c48a2d7c61fb132f78c3a
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/46335/
  
Dropped by
SHA256 010f5f978596f99377d06c9a6e7b982def7c5cbb857e091af1a3f68c27295bc9

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