MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119. 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: 7


Intelligence 7 IOCs 1 YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119
SHA3-384 hash: 6b6e2c364d15cb4e86b5bf5ba73436c6d9fc716df15d44b3be486998ef19e0a6ac290f815ffd6c6057687dff88a1abb5
SHA1 hash: 769c3e54f96c8dfdb5318fb46769f976ba9715ab
MD5 hash: 0c38d19fbfcc0ff3b3c0ea6328d53836
humanhash: quiet-nineteen-jig-spring
File name:0c38d19fbfcc0ff3b3c0ea6328d53836.exe
Download: download sample
Signature njrat
Create hunting rule
File size:1'023'488 bytes
First seen:2021-04-29 09:21:26 UTC
Last seen:2021-04-29 10:32:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:lBdlyIaDwEasZr0C4pyfKusXwD7Dz84nFxoAQgBnyLL+ImzRRRRR8veYH4pE0F+m:3OS2l01MwXwD7DbFmmNqCRRRRR82kM
Threatray 35 similar samples on MalwareBazaar
TLSH AD25F79C365075EFC85BC976CEA81C64FA60B47B470F9203A46312EDAA4D99BCF144F2
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
103.73.64.115:6522

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
103.73.64.115:6522 https://threatfox.abuse.ch/ioc/22250/

Intelligence

File Origin
# of uploads :
2
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/146523/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.677-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/701870
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Changes the view of files in windows explorer (hidden files and folders)
Detected unpacking (changes PE section rights)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 399861 Sample: koaHkQiwwt.exe Startdate: 29/04/2021 Architecture: WINDOWS Score: 100 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 10 other signatures 2->45 7 koaHkQiwwt.exe 7 2->7         started        process3 file4 29 C:\Users\user\AppData\...\dUIxUNBBvk.exe, PE32 7->29 dropped 31 C:\Users\...\dUIxUNBBvk.exe:Zone.Identifier, ASCII 7->31 dropped 33 C:\Users\user\AppData\Local\...\tmp4A03.tmp, XML 7->33 dropped 35 C:\Users\user\AppData\...\koaHkQiwwt.exe.log, ASCII 7->35 dropped 47 Detected unpacking (changes PE section rights) 7->47 49 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->49 51 Uses schtasks.exe or at.exe to add and modify task schedules 7->51 53 2 other signatures 7->53 11 koaHkQiwwt.exe 7->11         started        15 powershell.exe 22 7->15         started        17 powershell.exe 25 7->17         started        19 2 other processes 7->19 signatures5 process6 dnsIp7 37 stub.ignorelist.com 103.73.64.115, 49720, 6522 HOSTHATCHUS United States 11->37 55 Changes the view of files in windows explorer (hidden files and folders) 11->55 21 conhost.exe 15->21         started        23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        27 conhost.exe 19->27         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2021-04-19 19:30:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
42
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=whvw3stcjinhrtmrgyhgv5dlbv54bl5muwo56nop74hnfoo7iemq._file
Verdict:
unknown
Similar samples:
22e2c68999bf67926c5020459fb52ef04dbe08642c711112bac2704a15c7561d
njrat
271590f2ecb7e5ab9b930c0f606e2da24b382608df243a4ce720146dac881470
njrat
289672c4240951a1feebd7b328f05ded88e3d27b8da51d717813eb1193a6963a
njrat
618f4050d767d0c8f835ec3fa9e46b85b9291062a2e381122852238fa84c95f7
njrat
6d5e3ff4357858fd6bbab3840d78714f9126a5cae6771ba45b833108c2da8b6f
njrat
95a191b5e1728a1dc9a0007719ae7adba5be88b1ae5e8919185c91a201148a51
njrat
98ed86d837b442f105a469449651fdd24102b6e6b02fcff1a3e08730671210d3
njrat
c40529ad4cd03e64f1c62065d003f19d2903c77654ebe5823ea0a474f884f1d4
njrat
cd8ed20c2ffe0e086d3a0b640e4950e48583f297b6356c14de62623a4322fe12
njrat
e9fc68511341d493bcb6eecb8747e94d6d9914e780c9499ad85a9fc01925fdaa
njrat
+ 25 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  9/10
Tags:
evasion
Link:
https://tria.ge/reports/210429-xlf323at9e/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Unpacked files
SH256 hash:
e33b0d0b4b86f0dbb3d1278e68e88a650e5f3350694efb70be313761197b1969
MD5 hash:
471161f6f24e5d26b2db3e0ee18e80b5
SHA1 hash:
ed98f1178a5fe4b86fe0f7e4cd5ebbfba7483a30
Link:
https://www.unpac.me/results/9ff31a4b-4cf8-43bd-8177-000dada75e24/
SH256 hash:
b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119
MD5 hash:
0c38d19fbfcc0ff3b3c0ea6328d53836
SHA1 hash:
769c3e54f96c8dfdb5318fb46769f976ba9715ab
Link:
https://www.unpac.me/results/9ff31a4b-4cf8-43bd-8177-000dada75e24/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119

File information

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

Web download

njrat

Executable exe b1eb6dca624a1a78cd91360e6af46b0d7bc0afaca59ddf35cfff0ed2b9df4119

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/146523/
  
URLhaus
https://urlhaus.abuse.ch/url/1182382/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1182403/

Comments