MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f. 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: 8


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

SHA256 hash: a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f
SHA3-384 hash: a61f9ed4fac3dff5c263b03e05630d543e9cffd8bee5d67421196feafe776cbc773ce65a7b4e5da9e4274231cc007295
SHA1 hash: 3c8f2ff0515c9c5577244a60a55d851b16f8e037
MD5 hash: 6cff1bd19c5df5da153936328a210769
humanhash: maine-snake-illinois-kansas
File name:a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f
Download: download sample
Signature njrat
Create hunting rule
File size:1'200'640 bytes
First seen:2021-09-28 09:25:41 UTC
Last seen:2021-09-28 10:16:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:0aslyI6IB8yJFIMzT9C6ykP2CODx/TNfGOeyS9C7+IcWa3J:5FFIB8yAMzBykPiV9LR+FWa3J
Threatray 8 similar samples on MalwareBazaar
TLSH T10D4533876A8E3287F9D4943A8EA2523F6D906ED045E32643CAC7E067AD31D43BB4131D
File icon (PE):PE icon
dhash icon 00ca80c2c2808200 (36 x njrat, 4 x AsyncRAT, 4 x Smoke Loader)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f
Verdict:
Malicious activity
Analysis date:
2021-09-28 09:33:01 UTC
Tags:
trojan rat njrat bladabindi
Link:
https://app.any.run/tasks/70d072ab-8144-4c4e-b069-0d30776bedec

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Enabling the 'hidden' option for recently created files
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Creating a file in the mass storage device
Firewall traversal
Enabling autorun by creating a file
Enabling a "Do not show hidden files" option
Enabling threat expansion on mass storage devices by creating the autorun.inf autorun file
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/431dd4f2-fae9-4512-9f5e-8406d1625024
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/859995
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Changes the view of files in windows explorer (hidden files and folders)
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops PE files to the startup folder
Found malware configuration
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
Sigma detected: System File Execution Location Anomaly
Tries to evade analysis by execution special instruction which cause usermode exception
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: 492429 Sample: nTLjKlLT7S Startdate: 28/09/2021 Architecture: WINDOWS Score: 100 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for dropped file 2->44 46 10 other signatures 2->46 8 nTLjKlLT7S.exe 3 7 2->8         started        13 conhost.exe 5 2->13         started        15 conhost.exe 4 2->15         started        17 conhost.exe 4 2->17         started        process3 dnsIp4 36 95.165.6.98, 5552 ASN-MGTS-USPDRU Russian Federation 8->36 38 192.168.111.134, 5552 unknown unknown 8->38 30 C:\Users\user\AppData\Roaming\conhost.exe, PE32 8->30 dropped 32 C:\Users\user\AppData\...\nTLjKlLT7S.exe.log, ASCII 8->32 dropped 56 Detected unpacking (changes PE section rights) 8->56 58 Detected unpacking (overwrites its own PE header) 8->58 60 Tries to evade analysis by execution special instruction which cause usermode exception 8->60 19 conhost.exe 4 5 8->19         started        62 Hides threads from debuggers 13->62 file5 signatures6 process7 dnsIp8 34 127.0.0.1 unknown unknown 19->34 28 C:\...\9b2170562ddc9ebe6e81709e0b306ad9.exe, PE32 19->28 dropped 48 Antivirus detection for dropped file 19->48 50 Multi AV Scanner detection for dropped file 19->50 52 Detected unpacking (changes PE section rights) 19->52 54 9 other signatures 19->54 24 netsh.exe 1 3 19->24         started        file9 signatures10 process11 process12 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f/
Threat name:
Win32.Trojan.Tiggre
Create hunting rule
Status:
Malicious
First seen:
2021-09-26 01:46:48 UTC
AV detection:
28 of 45 (62.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uxiiqhjclw42p7isn34boao5phsi25be64vqzc23yqwszjuisbhq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
268cd68aaa12ec554282fdc43552dc5383d1dddf5f890c8e6af50b161a46390d
njrat
482321570b1fc0a7bfb77d4cf59efc3762b79033956cb146e345b07dca1549d1
njrat
4b96d54c1dc2a1447806ac1f951d9c3a9db1145b530ab71dcb3dbcf5904e9718
njrat
8841f4c341be3122b4c3967a044b7871d22a67898ee36c1b94bd083aa58d31b1
njrat
955f8374fb9b6f509dead8f29f3990ab02dc762345fcd3248886da10659c99e0
njrat
991c4166a2246ca5ae9186a1e747f5eb767fdbd304dbfa1c5f4a2019cb6b4aec
njrat
ddd019669afb9f1adad82d960f9e6edc9329e80d91cf7e5b3f1da8698518ec00
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210928-ld8g2abdd5/
Behaviour
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
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f
MD5 hash:
6cff1bd19c5df5da153936328a210769
SHA1 hash:
3c8f2ff0515c9c5577244a60a55d851b16f8e037
Link:
https://www.unpac.me/results/d787e2ae-2a25-499e-a95a-96bc264545de/
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/a5d0881d225db9a7fd126ef81701dd79e48d7424f72b0c8b5bc42d2ca688904f

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:pe_imphash
Create hunting rule
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:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.smominru.

File information

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

Comments