MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
SHA3-384 hash: eb56f69fd7e0d7eed24e4ac98624304f2dcd61f3e5398bd2dd3f33cdcc42509e0a34346ea207e46e8630e3312a86d0a5
SHA1 hash: edea8ea5b6e77624a98ae7f9afc6ba7c05015fd5
MD5 hash: d660755f3b41cdb325a1319cbd3497a8
humanhash: uranus-louisiana-nevada-finch
File name:7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
Download: download sample
Signature njrat
Create hunting rule
File size:1'278'560 bytes
First seen:2021-09-21 08:38:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:6DWHSb4NhC8ZlwBw776A6w2d469Gzw9KAUtfprbp//JGMcaq:J84vlwBQ76AN2d46Ew9Etfprbp//Jlcb
Threatray 19 similar samples on MalwareBazaar
TLSH T123451302F9C585B2D631193118659BA1617CBE201F259FEBE3E42E6E9D300D1BB35BB3
File icon (PE):PE icon
dhash icon 9494b494d4aeaeac (832 x DCRat, 172 x RedLineStealer, 134 x CryptOne)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
387
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
Verdict:
Suspicious activity
Analysis date:
2021-09-21 09:12:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c5112576-1c3d-40ba-bcd3-ae086d772b27

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/189806/
Detection(s):
SecuriteInfo.com.Gen.Variant.Razy.582340.18684.14597.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e685d8fe-10fa-474f-8540-1fad671f3011
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/854691
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Creates autorun.inf (USB autostart)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Disables the Windows task manager (taskmgr)
Drops PE files to the startup folder
Drops PE files with benign system names
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: Suspicious Svchost Process
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: 487126 Sample: 3ASl2PBvqR Startdate: 21/09/2021 Architecture: WINDOWS Score: 100 75 Malicious sample detected (through community Yara rule) 2->75 77 Antivirus detection for dropped file 2->77 79 Multi AV Scanner detection for dropped file 2->79 81 8 other signatures 2->81 12 3ASl2PBvqR.exe 8 2->12         started        process3 dnsIp4 65 192.168.2.1 unknown unknown 12->65 63 C:\Users\user\...\Server_protected.exe, PE32 12->63 dropped 16 Server_protected.exe 7 12->16         started        file5 process6 signatures7 67 Antivirus detection for dropped file 16->67 69 Multi AV Scanner detection for dropped file 16->69 71 Detected unpacking (changes PE section rights) 16->71 73 4 other signatures 16->73 19 server.exe 2 17 16->19         started        process8 file9 49 C:\system.exe, PE32 19->49 dropped 51 C:\Umbrella.flv.exe, PE32 19->51 dropped 53 C:\autorun.inf, Microsoft 19->53 dropped 85 Antivirus detection for dropped file 19->85 87 Multi AV Scanner detection for dropped file 19->87 89 Detected unpacking (changes PE section rights) 19->89 91 10 other signatures 19->91 23 svchost.exe 5 19->23         started        26 netsh.exe 1 3 19->26         started        signatures10 process11 signatures12 93 Antivirus detection for dropped file 23->93 95 Multi AV Scanner detection for dropped file 23->95 97 Detected unpacking (changes PE section rights) 23->97 99 4 other signatures 23->99 28 server.exe 12 23->28         started        31 conhost.exe 26->31         started        process13 signatures14 103 Hides threads from debuggers 28->103 33 svchost.exe 28->33         started        37 netsh.exe 28->37         started        process15 file16 47 C:\Users\user\AppData\Roaming\server.exe, PE32 33->47 dropped 83 Hides threads from debuggers 33->83 39 server.exe 33->39         started        43 conhost.exe 37->43         started        signatures17 process18 file19 55 C:\Windows\SysWOW64xplower.exe, PE32 39->55 dropped 57 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 39->57 dropped 59 b8a1b8495df77c2fba...8Windows Update.exe, PE32 39->59 dropped 61 2 other malicious files 39->61 dropped 101 Hides threads from debuggers 39->101 45 netsh.exe 39->45         started        signatures20 process21
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-09-19 02:34:33 UTC
AV detection:
19 of 45 (42.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=p62a2lcach42uzwskgbxakwgq4x76byp7hdugp5lnu3yl26jl5ga._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
06aba312b446bf01180d633c94686c5ab2d102d40156b5cd9a9255cc6fd5b69c
njrat
4322b25b29f160a08e809764a5dd86deda2289623331867004f85a905ce47769
njrat
4824693d37ee0c444b89e21a2ae1cba396927f299e88751759635b2795c1bc96
njrat
5261874485f9fe16a78a558734e8652f93db1d544f3be331e7f6adc06f43ee98
njrat
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
njrat
9cda5e5ad6ca68a803516013fbf62e6b06383b20fccf1ee6aed4730c916a3b55
njrat
b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
njrat
d162aea95889e147b96c2ab4da7cf27ec2538abd149a08f96d993fb7a41b002f
njrat
d92f632b039d42bfe46c284f35b8ce4f898576d840fd366becc1d9bcd4ed6a3a
njrat
+ 9 additional samples on MalwareBazaar
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:xmrig evasion miner
Link:
https://tria.ge/reports/210921-kkc42aghg4/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops autorun.inf file
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops startup file
Loads dropped DLL
Disables Task Manager via registry modification
Executes dropped EXE
Modifies Windows Firewall
xmrig
Unpacked files
SH256 hash:
7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
MD5 hash:
d660755f3b41cdb325a1319cbd3497a8
SHA1 hash:
edea8ea5b6e77624a98ae7f9afc6ba7c05015fd5
Link:
https://www.unpac.me/results/147736d9-ca61-49c5-af28-ab4836f5c443/
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/7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c

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: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: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
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.

Cape
Cape
https://www.capesandbox.com/analysis/189806/

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