MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d424a08c1e1eac484c029a6ef4008bf991aebf26a86aa02fecd18ad60bb24a0f. 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: 6


Intelligence 6 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d424a08c1e1eac484c029a6ef4008bf991aebf26a86aa02fecd18ad60bb24a0f
SHA3-384 hash: 599d52761dce61b4edc107eb8e634354c105fa2e84376af0abe43b3ba93ec0259233c844acdf9c8353e5434235434e7a
SHA1 hash: d44a1e96a3ab5747705dbb242ab07e452e1ae9bb
MD5 hash: 498b038f610b49e31b24ac641a1010d4
humanhash: east-eighteen-venus-nitrogen
File name:Invoice #33190.vbs
Download: download sample
Signature njrat
Create hunting rule
File size:733 bytes
First seen:2021-08-28 06:21:26 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 12:0ChGF2MBN2hXNoxAbOJk82cG2bwELPdg3Nfd+aaiTC:HgF2SN2hXQXG2UE7kNEuC
Threatray 106 similar samples on MalwareBazaar
TLSH T17B01F60A4D29CDDB0049F18202C34DEAC6604AA74F806E7A247479476DAD22E6DCCD47
Reporter abuse_ch
Tags:NjRAT RAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
549
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/183007/
Detection(s):
SecuriteInfo.com.ISB.Downloadergen76.20554.15455.UNOFFICIAL
Create hunting rule

Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/840662
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Obfuscated command line found
Sigma detected: Suspicious PowerShell Command Line
Sigma detected: Suspicious PowerShell Keywords
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected MSILLoadEncryptedAssembly
Yara detected Njrat
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 473093 Sample: Invoice #33190.vbs Startdate: 28/08/2021 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Yara detected Powershell download and execute 2->46 48 Yara detected Njrat 2->48 50 4 other signatures 2->50 9 wscript.exe 1 2->9         started        12 tHOMAS.exe 2->12         started        14 tHOMAS.exe 2->14         started        process3 signatures4 58 VBScript performs obfuscated calls to suspicious functions 9->58 60 Wscript starts Powershell (via cmd or directly) 9->60 62 Obfuscated command line found 9->62 16 powershell.exe 14 32 9->16         started        21 conhost.exe 12->21         started        23 conhost.exe 14->23         started        process5 dnsIp6 42 transfer.sh 144.76.136.153, 49705, 49712, 80 HETZNER-ASDE Germany 16->42 38 PowerShell_transcr....20210828082304.txt, UTF-8 16->38 dropped 52 Creates an undocumented autostart registry key 16->52 54 Writes to foreign memory regions 16->54 56 Injects a PE file into a foreign processes 16->56 25 aspnet_regbrowsers.exe 16->25         started        28 conhost.exe 16->28         started        file7 signatures8 process9 file10 40 C:\Users\user\AppData\Local\Temp\tHOMAS.exe, PE32 25->40 dropped 30 tHOMAS.exe 25->30         started        32 attrib.exe 25->32         started        process11 process12 34 conhost.exe 30->34         started        36 conhost.exe 32->36         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d424a08c1e1eac484c029a6ef4008bf991aebf26a86aa02fecd18ad60bb24a0f/
Threat name:
Script-WScript.Downloader.Tnega
Create hunting rule
Status:
Malicious
First seen:
2021-08-28 06:22:05 UTC
AV detection:
5 of 45 (11.11%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=2qskbda6d2weqtactjxpiael7gi25pzgvbvkal7m2gfnmc5sjihq._file
Verdict:
suspicious
Similar samples:
0b365ef77b8b8ed330a2e48b081a20d9eb5b275b276306e5b51615cf10821fe0
njrat
416f3b7993ceaa6819402c66c9b2de0a4de163cd9765dd8dffe81cdbab538c48
njrat
66af5edcb0b90924a25f4cf764ae81eb754b58da9bde404761f48eafd1ead410
njrat
7f1cd16cd2d2e5644752a3e0fd411c3902bad47051779d5bd539e9650f53787c
njrat
89aea7429e8634bbba4d97c8576adb9568cdf91830d15ecd2c34c5a290f7b83f
njrat
8c9d614da4ea17f4261a105adbe73992c0df1f5639310f78db244fdf3fe338fe
njrat
ce30c428376eac3095f203ebe88f94a38737dc82f2ad018b2ae6c8569b389c5a
njrat
d9d27f03e2f8bc97451296da9a7ddeac39ede3240306fa198bf898434b58c53c
njrat
df047189f75d998dc499072881c762fd001360f5cf184b801cb8c232b5c567f6
njrat
f44394f10dd10600a8f25093e76fac442c594ea85debf6bfea0933766529f747
njrat
+ 96 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:solo persistence trojan
Link:
https://tria.ge/reports/210828-v74mrh6bvj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
njRAT/Bladabindi
Malware Config
C2 Extraction:
hydrometal.duckdns.org:5107
Dropper Extraction:
http://transfer.sh/get/1jmaVDV/model.txt
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/d424a08c1e1e/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/d424a08c1e1eac484c029a6ef4008bf991aebf26a86aa02fecd18ad60bb24a0f

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:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_attrib
Create hunting rule
Author:ditekSHen
Description:Detects executables using attrib with suspicious attributes attributes
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:PowerShell_Case_Anomaly
Create hunting rule
Author:Florian Roth
Description:Detects obfuscated PowerShell hacktools
Reference:https://twitter.com/danielhbohannon/status/905096106924761088
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.

Malspam

njrat

Visual Basic Script (vbs) vbs d424a08c1e1eac484c029a6ef4008bf991aebf26a86aa02fecd18ad60bb24a0f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/183007/

Comments