MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55. 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: 17


Intelligence 17 IOCs YARA 14 File information Comments
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SHA256 hash: d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55
SHA3-384 hash: 79102297ffe2c941d468847fc2591015286490636480197237d062446366ffb530a28c268ad675df8447ce42f5a96d62
SHA1 hash: 5d91a0d58d8d5e2d88dddf2c9c5f0499fe61ba11
MD5 hash: 865ff8cad7b20655ee94d62739cf57b2
humanhash: louisiana-foxtrot-missouri-social
File name:Runtime Broker.exe
Download: download sample
Signature njrat
Create hunting rule
File size:66'048 bytes
First seen:2023-04-03 12:22:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep 1536:prEqKHoN36t+QViobt8hpuyBnvbKfIteKbN38LbB9z3nSaF9bmSRv8:prEqKHoN36t+QViobGhBn2f6mt9zCaFg
TLSH T10D533A4977958A54D2BD6E7804F26751C630F50B6D03EB2E08D170EAABB3FC40A46BE7
TrID 48.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
20.5% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.6% (.SCR) Windows screen saver (13097/50/3)
6.9% (.EXE) Win64 Executable (generic) (10523/12/4)
4.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter Chainskilabs
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
221
Origin country :
US US
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
Runtime Broker.exe
Verdict:
Malicious activity
Analysis date:
2023-04-03 10:29:25 UTC
Tags:
rat njrat bladabindi
Link:
https://app.any.run/tasks/f9efee7b-32c0-4d1a-baff-1722c4bdff3d

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/379604/
Detection(s):
Win.Malware.Ursu-9784017-0
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Win.Trojan.Generic-6417450-0
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Win.Trojan.Generic-6454614-0
Create hunting rule

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

Win.Trojan.B-468
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Win.Trojan.Bladabindi-6192388-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Searching for the window
Creating a file
Сreating synchronization primitives
Creating a process from a recently created file
Running batch commands
Launching a process
Enabling the 'hidden' option for recently created files
Creating a window
Launching a tool to kill processes
Creating a file in the mass storage device
Verdict:
Malicious
Threat level:
  10/10
Confidence:
83%
Tags:
anti-debug anti-vm cmd.exe evasive eventvwr.exe greyware hacktool keylogger njrat packed rat winnti
Link:
https://www.filescan.io/uploads/642ac52c5a075383fbff34df/reports/752b2725-4e8a-4a34-8245-5c919f5a6072/overview
Verdict:
Malicious
Labled as:
KillMBR.B.Generic
Link:
https://www.hybrid-analysis.com/sample/d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55
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/c0b718c6-6d0a-4d7d-962c-c0142cda0965
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1207510
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)
Detected njRat
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Self deletion via cmd or bat file
Sigma detected: Drops script at startup location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses cmd line tools excessively to alter registry or file data
Yara detected Generic Downloader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 840429 Sample: Runtime_Broker.exe Startdate: 03/04/2023 Architecture: WINDOWS Score: 100 59 clumsyattentivepatterns.marioblox.repl.co 2->59 61 0.tcp.ap.ngrok.io 2->61 67 Multi AV Scanner detection for domain / URL 2->67 69 Malicious sample detected (through community Yara rule) 2->69 71 Antivirus detection for dropped file 2->71 73 15 other signatures 2->73 9 Runtime_Broker.exe 1 7 2->9         started        13 Runtime Broker.exe 2->13         started        signatures3 process4 file5 49 C:\Runtime Broker.exe, PE32 9->49 dropped 51 C:\ProgramData\Runtime Broker.exe, PE32 9->51 dropped 53 C:\Users\user\...\Runtime_Broker.exe.log, ASCII 9->53 dropped 75 Self deletion via cmd or bat file 9->75 15 Runtime Broker.exe 3 6 9->15         started        19 cmd.exe 1 9->19         started        21 taskkill.exe 1 9->21         started        23 taskkill.exe 1 9->23         started        signatures6 process7 file8 55 C:\Users\user\AppData\...\Runtime Broker.exe, PE32 15->55 dropped 57 C:\Users\user\AppData\...\Runtime Broker.url, MS 15->57 dropped 63 Protects its processes via BreakOnTermination flag 15->63 65 Uses cmd line tools excessively to alter registry or file data 15->65 25 taskkill.exe 1 15->25         started        27 taskkill.exe 1 15->27         started        29 attrib.exe 1 15->29         started        31 attrib.exe 1 15->31         started        33 conhost.exe 19->33         started        35 choice.exe 1 19->35         started        37 conhost.exe 21->37         started        39 conhost.exe 23->39         started        signatures9 process10 process11 41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        45 conhost.exe 29->45         started        47 conhost.exe 31->47         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2023-04-03 12:23:09 UTC
File Type:
PE (.Net Exe)
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3d7ghjcjtyeegbxpb4yd62pvho56tebjmkwiyjzc6fw2kimyhnkq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked persistence trojan
Link:
https://tria.ge/reports/230403-pkgjnsgb6x/
Behaviour
Kills process with taskkill
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
njRAT/Bladabindi
Malware Config
C2 Extraction:
127.0.0.1:10002
Unpacked files
SH256 hash:
d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55
MD5 hash:
865ff8cad7b20655ee94d62739cf57b2
SHA1 hash:
5d91a0d58d8d5e2d88dddf2c9c5f0499fe61ba11
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/ea5712b7-d72a-4188-b5f4-38c2417f07db/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/d8fe63a4499e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55

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
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:CN_disclosed_20180208_c_RID2E71
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:malware_Njrat_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:MAL_njrat
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:MAL_Winnti_Sample_May18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
Rule name:MAL_Winnti_Sample_May18_1_RID3003
Create hunting rule
Author:Florian Roth
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Suspicious_Macro_Presence
Create hunting rule
Author:Mehmet Ali Kerimoglu (CYB3RMX)
Description:This rule detects common malicious/suspicious implementations.
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

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/379604/

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