MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
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SHA256 hash: 420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741
SHA3-384 hash: eeae5e57f21d40e2cb4d5e9307850c202047240be365e5dab6b4460f81edb256fc433142d66ce5b2f9eb9b825ae6fcda
SHA1 hash: 8f147387bd3e80aeeb3bf81545e4e180640f4b64
MD5 hash: 4629307fffdef51e32bb6295acd18ffc
humanhash: purple-cold-beer-pizza
File name:4629307fffdef51e32bb6295acd18ffc.exe
Download: download sample
Signature njrat
Create hunting rule
File size:95'232 bytes
First seen:2022-02-22 08:25:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:cY3Pu6SgmnldjcRoMwrx7Y+DIkIITJbXX6pOt8ux82WXxrjEtCdnl2pi1Rz4Rk3P:buYmlbrq+1NTZWOojEwzGi1dDuDCgS
Threatray 212 similar samples on MalwareBazaar
TLSH T1B293E84977E57524E1BF5AF39471B2004E38B4871602E39D48F258AA1B33AC44F89FEB
Reporter abuse_ch
Tags:exe NjRAT RAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Detection:
njRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/243190/
Detection(s):
Win.Packed.Generic-7672854-0
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Win.Packed.Generic-7672855-0
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Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Generic-9795615-0
Create hunting rule

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

Win.Trojan.B-468
Create hunting rule

Win.Trojan.Ratenjay-1
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file in the %AppData% directory
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
Creating a file in the Windows subdirectories
Searching for the window
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd.exe control.exe explorer.exe fingerprint fingerprint greyware keylogger msconfig.exe netsh.exe njrat obfuscated packed rat replace.exe rundll32.exe schtasks.exe stealer update.exe winnti
Link:
https://www.filescan.io/uploads/62149df1ac8ad0468b6547e2/reports/7b64cfcb-48e0-47cb-bac6-e3fba1a9c057/overview
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9e54f15e-8d87-4d4b-8802-d6bf18a6874d
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/943759
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to spread to USB devices (.Net source)
Creates autorun.inf (USB autostart)
Disables the Windows task manager (taskmgr)
Drops PE files to the startup folder
Drops PE files with benign system names
Found malware configuration
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
Sigma detected: File Created with System Process Name
Sigma detected: Suspcious CLR Logs Creation
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
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: 576239 Sample: KfMqaLzTVA.exe Startdate: 22/02/2022 Architecture: WINDOWS Score: 100 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for dropped file 2->55 57 13 other signatures 2->57 8 KfMqaLzTVA.exe 7 2->8         started        process3 file4 31 C:\Users\user\AppData\Local\Temp\server.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\...\KfMqaLzTVA.exe.log, ASCII 8->33 dropped 11 server.exe 2 14 8->11         started        process5 file6 35 C:\Windows\SysWOW64xplower.exe, PE32 11->35 dropped 37 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 11->37 dropped 39 f69bd55f7b3c54632c...1Windows Update.exe, PE32 11->39 dropped 41 4 other malicious files 11->41 dropped 59 Antivirus detection for dropped file 11->59 61 Multi AV Scanner detection for dropped file 11->61 63 Creates autorun.inf (USB autostart) 11->63 65 6 other signatures 11->65 15 svchost.exe 3 11->15         started        19 netsh.exe 1 3 11->19         started        21 netsh.exe 3 11->21         started        23 netsh.exe 3 11->23         started        signatures7 process8 file9 43 C:\Users\user\AppData\...\svchost.exe.log, ASCII 15->43 dropped 45 Antivirus detection for dropped file 15->45 47 Multi AV Scanner detection for dropped file 15->47 49 Machine Learning detection for dropped file 15->49 25 conhost.exe 19->25         started        27 conhost.exe 21->27         started        29 conhost.exe 23->29         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
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Status:
Malicious
First seen:
2021-12-15 00:35:56 UTC
File Type:
PE (.Net Exe)
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
1e55c31399aacc9290f92d5f269897a82c8674c3a5f2cdd67068cf54b4179269
njrat
376c8edbafb727e3c48081ac3c6751dd6b73e73462c2a26794b37cd44be4344d
njrat
495135344619bad53ac992d52fb75b420130b856b65ceabad2748a4236bbd322
njrat
6000cb4765d6219aeea0210a1ecec6af293e3ee6e330f560e30c043987f5aeb7
njrat
71a0baa2c07547f62e47907ccfe44574a8eda034270492129c5bd2ed929bb4c6
njrat
87ac8c78f79072416a0d38c7509602d28e367e990f31cbfaa667b59292391c99
njrat
f829bd45e12075c0d95bc76b14ea211f59772e2bf05ecbe32ff336cb6d0ea284
njrat
+ 202 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:nj evasion trojan
Link:
https://tria.ge/reports/220222-kbaybafgbk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Drops autorun.inf file
Drops file in System32 directory
Drops startup file
Loads dropped DLL
Disables Task Manager via registry modification
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
FRANSESCOTI3LjAuFRANSESCOC4x:NTU1Mg==
Unpacked files
SH256 hash:
420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741
MD5 hash:
4629307fffdef51e32bb6295acd18ffc
SHA1 hash:
8f147387bd3e80aeeb3bf81545e4e180640f4b64
Link:
https://www.unpac.me/results/79f8feef-7bd8-435c-aff6-62c2c1f05237/
Malware family:
Winnti Group
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/420c7c5b6300/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/420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741

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
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: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_Winnti_Sample_May18_1
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: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_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

File information

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

Web download

njrat

Executable exe 420c7c5b6300259b7788d4612fd1bd20550e88c694cbabf2b9ff16c4e153d741

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/243190/
  
URLhaus
https://urlhaus.abuse.ch/url/2051258/
  
Delivery method
Distributed via web download

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