MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4. 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: 10


Intelligence 10 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4
SHA3-384 hash: 97c41b437f7c42fac9997aec1718d96ceafc6dcb43e3a809551559e777d3a9c69dec6727f58e0ed8c5e6d7f3b5274adb
SHA1 hash: 56473d7aebe672b1243f6a6a1abad10010a380b2
MD5 hash: 47434940f4ef41d33be0d7f21aa0415f
humanhash: floor-wisconsin-robin-equal
File name:28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4
Download: download sample
Signature njrat
Create hunting rule
File size:1'125'888 bytes
First seen:2021-09-23 07:07:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 113 x njrat, 80 x RedLineStealer)
ssdeep 24576:+PLB0nJcudQGPkAlqQaTCPxZG8thdzgiAUyL3:+PLWJcuiiUQaWPRdzgiTy
Threatray 29 similar samples on MalwareBazaar
TLSH T1733522981FDA1C66EA916EB486306D2D51FBAEA43E3DF713CC667840BF331D52861063
File icon (PE):PE icon
dhash icon 080f333327330f0c (1 x njrat)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
332
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ff538c5a421374310cbf49a8cd574ec5492861cc86f7ca1719f03b3473ee3630
Verdict:
Malicious activity
Analysis date:
2021-09-23 06:56:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/dab9e836-d6ed-429e-9445-3688184ccd75

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/190628/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/db090d8c-48bc-473c-bebd-2a15bd6cd64d
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/856345
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to spread to USB devices (.Net source)
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 dnsIp2 2 Behavior Graph ID: 488778 Sample: 6OIwRMfpRV Startdate: 23/09/2021 Architecture: WINDOWS Score: 100 59 ic-54113400-0ac7b9-windowsupdate48.s.loris.llnwd.net 2->59 61 ic-54113400-0a7b2f-windowsupdate48.s.loris.llnwd.net 2->61 71 Malicious sample detected (through community Yara rule) 2->71 73 Antivirus detection for dropped file 2->73 75 Antivirus / Scanner detection for submitted sample 2->75 77 10 other signatures 2->77 11 6OIwRMfpRV.exe 7 2->11         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\6OIwRMfpRV.exe.log, ASCII 11->49 dropped 91 Detected unpacking (changes PE section rights) 11->91 93 Detected unpacking (overwrites its own PE header) 11->93 95 Tries to evade analysis by execution special instruction which cause usermode exception 11->95 97 Hides threads from debuggers 11->97 15 server.exe 2 16 11->15         started        signatures6 process7 file8 53 C:\system.exe, PE32 15->53 dropped 55 C:\Umbrella.flv.exe, PE32 15->55 dropped 57 C:\autorun.inf, Microsoft 15->57 dropped 63 Antivirus detection for dropped file 15->63 65 Multi AV Scanner detection for dropped file 15->65 67 Detected unpacking (changes PE section rights) 15->67 69 10 other signatures 15->69 19 svchost.exe 5 15->19         started        22 netsh.exe 1 3 15->22         started        signatures9 process10 signatures11 79 Antivirus detection for dropped file 19->79 81 Multi AV Scanner detection for dropped file 19->81 83 Detected unpacking (changes PE section rights) 19->83 85 4 other signatures 19->85 24 server.exe 12 19->24         started        27 conhost.exe 22->27         started        process12 signatures13 89 Hides threads from debuggers 24->89 29 svchost.exe 4 24->29         started        33 netsh.exe 3 24->33         started        process14 file15 51 C:\Users\user\AppData\Roaming\server.exe, PE32 29->51 dropped 99 Hides threads from debuggers 29->99 35 server.exe 29->35         started        39 conhost.exe 33->39         started        signatures16 process17 file18 41 C:\Windows\SysWOW64xplower.exe, PE32 35->41 dropped 43 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 35->43 dropped 45 C:\Users\user\...\Microsoft Corporation.exe, PE32 35->45 dropped 47 2 other malicious files 35->47 dropped 87 Hides threads from debuggers 35->87 signatures19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-09-20 07:45:06 UTC
AV detection:
26 of 43 (60.47%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fdno6rxj6xam4zoqsfhxmh6igkhhuugshlqbiazsmjsguancbg2a._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
106c12a3e09c4585808382c93be13f5b60f7cd86e5a28d638d9de5f6662f3609
njrat
1f2c235e93529aff918ec8634035b3069992ebb16ef8042903edd07b0a21db5b
njrat
25a5d91f4c867eb1436fdba263123537b96a582fd0f80dccf96537198678925e
njrat
43fc7007823fa8f0e718a782ba2d85a5e63eb77a8efebc223e72d5671465e44f
njrat
7ee77a45282939f784f7d224b7345399efa09a14a9ca619d6692d6ac04ebfa17
njrat
8080524135f4518bd83acbe95dc37cb615fdcf4be70308a6e9555060ecd2f10c
njrat
84ae6fe4cd4f1357409af9eeea51b0ceb8385242c1e67b1f22a51a9475f3ce01
njrat
9a080e918c88adb048ffca38c0604318eee80e19be5a578186a63cdd64d45a41
njrat
bd15b8dc3c9eeddcc7e33877876fb0d3856495b473df950f50bec4701db73d5c
njrat
ccae475b281127a3280a51906a2ab50248c8b7f75c34e93c5bd62ccc0fded850
njrat
+ 19 additional samples on MalwareBazaar
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:xmrig evasion miner
Link:
https://tria.ge/reports/210923-hx8qcsfff9/
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:
28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4
MD5 hash:
47434940f4ef41d33be0d7f21aa0415f
SHA1 hash:
56473d7aebe672b1243f6a6a1abad10010a380b2
Link:
https://www.unpac.me/results/97702b73-c3f0-4197-8b19-e5e6d7ed6013/
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/28daef46e9f5c0ce65d0914f761fc8328e7a50d23ae014033262646a01a209b4

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: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.

Cape
Cape
https://www.capesandbox.com/analysis/190628/

Comments