MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438. 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: 10


Intelligence 10 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438
SHA3-384 hash: 87f7ac006c087fdbb061ea19aa9054cec2cba0005ce3951e9013de8137b34f12298a419e6c7512034d87277e5a341cd2
SHA1 hash: aa799d11085b0c51802d852faead5e9ccc7fa05c
MD5 hash: b16a969889a73f13d88f215ad5ce6931
humanhash: delta-cup-coffee-butter
File name:b16a969889a73f13d88f215ad5ce6931
Download: download sample
Signature njrat
Create hunting rule
File size:1'228'800 bytes
First seen:2021-06-30 10:11:42 UTC
Last seen:2021-06-30 10:35:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:9LgLbWbzN9zjAHe+SLPFXob5BF1LwzZnFiYWr9DX0f1Bolzw:ZUCPN1E++EaFBwNF+9DEdBMw
Threatray 6 similar samples on MalwareBazaar
TLSH 2745DE697391E3E6C98CD037F26D80754B3A5F8E2A36989E6DC822DAEFF3721055441C
Reporter zbetcheckin
Tags:32 exe NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
280
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b16a969889a73f13d88f215ad5ce6931
Verdict:
Malicious activity
Analysis date:
2021-06-30 10:15:23 UTC
Tags:
rat njrat bladabindi trojan
Link:
https://app.any.run/tasks/36c5ed2d-6c8a-4d2e-a8ca-5436b9a6d0de

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/168928/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/44e1e4a9-faa8-46f8-b1ae-4df4a03c59d2
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/809877
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 spread to USB devices (.Net source)
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Hides threads from debuggers
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
PE file has nameless sections
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to evade analysis by execution special instruction which cause usermode exception
Uses dynamic DNS services
Uses netsh to modify the Windows network and firewall settings
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 442288 Sample: hlTI3yEufK Startdate: 30/06/2021 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus / Scanner detection for submitted sample 2->47 49 8 other signatures 2->49 8 hlTI3yEufK.exe 3 5 2->8         started        12 kavachv3.exe 3 2->12         started        14 kavachv3.exe 2 2->14         started        16 kavachv3.exe 2 2->16         started        process3 file4 37 C:\Users\user\AppData\Roaming\kavachv3.exe, PE32 8->37 dropped 39 C:\Users\user\AppData\...\hlTI3yEufK.exe.log, ASCII 8->39 dropped 63 Detected unpacking (changes PE section rights) 8->63 65 Detected unpacking (overwrites its own PE header) 8->65 67 Tries to evade analysis by execution special instruction which cause usermode exception 8->67 18 kavachv3.exe 4 4 8->18         started        69 Hides threads from debuggers 12->69 signatures5 process6 dnsIp7 41 kavachhost.ddns.net 122.166.149.57, 49732, 8888 AIRTELBROADBAND-AS-APBhartiAirtelLtdTelemediaServices India 18->41 51 Antivirus detection for dropped file 18->51 53 Multi AV Scanner detection for dropped file 18->53 55 Detected unpacking (changes PE section rights) 18->55 57 7 other signatures 18->57 22 cmd.exe 1 18->22         started        25 netsh.exe 3 18->25         started        27 netsh.exe 1 3 18->27         started        signatures8 process9 signatures10 59 Uses ping.exe to sleep 22->59 61 Uses ping.exe to check the status of other devices and networks 22->61 29 conhost.exe 22->29         started        31 PING.EXE 1 22->31         started        33 conhost.exe 25->33         started        35 conhost.exe 27->35         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-06-30 10:12:10 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m4f7fowsgzc3omngpyzjt5hrnew2hpnkoeofrcyxajhnsfxfkq4a._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
06aba312b446bf01180d633c94686c5ab2d102d40156b5cd9a9255cc6fd5b69c
njrat
4824693d37ee0c444b89e21a2ae1cba396927f299e88751759635b2795c1bc96
njrat
61d7b5079186817a05fd9b9359e12d0ad5d887ef662a8a80c5bce9d40a5b7d37
njrat
7ec599424a161fe942345c2336dd0cfb8c7d64e6e72b8e90efd999328b06cc04
njrat
953dd19700177beaf848e510418db83c8481ce466819c7052be8d93974ce3191
njrat
bd15b8dc3c9eeddcc7e33877876fb0d3856495b473df950f50bec4701db73d5c
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210630-kn1xty4mq6/
Behaviour
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438
MD5 hash:
b16a969889a73f13d88f215ad5ce6931
SHA1 hash:
aa799d11085b0c51802d852faead5e9ccc7fa05c
Link:
https://www.unpac.me/results/8474bc1e-451f-433b-81de-6174a5c7c644/
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/670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438

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:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:pe_imphash
Create hunting rule
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Skystars_LightDefender_Njrat_Rule
Create hunting rule
Author:Skystars LightDefender
Description:Detects Njrat
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

njrat

Executable exe 670bf2bad23645b731a67e3299f4f1692da3bdaa711c588b17024ed916e55438

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/168928/

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