MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f00f5f7f81d246a3d2c6aacef673f85de79e96a460641482d6da42b638d4ad2a. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments

SHA256 hash: f00f5f7f81d246a3d2c6aacef673f85de79e96a460641482d6da42b638d4ad2a
SHA3-384 hash: 9c93c033d530f6f8fb366889e79715cf2bea7643285a83d4097ff42ecc3bb29ecbc79fdcfeed3274b2dd1a60361b3050
SHA1 hash: 3eae24e697d449cf3360e179fcee7d2d34a911e3
MD5 hash: 7ba56dde931a9492e178955f5365eaa5
humanhash: jersey-friend-tango-moon
File name:f00f5f7f81d246a3d2c6aacef673f85de79e96a460641482d6da42b638d4ad2a
Download: download sample
Signature njrat
File size:79'872 bytes
First seen:2021-02-23 14:30:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:bdXq+XsdHDp4S5wpOk3JCK6pFNhXd6fOpd/9nEh9TG3JsR:LQwpOk5CK6MO/9ES3Js
Threatray 13 similar samples on MalwareBazaar
TLSH 44733B4877F54612D1BF0EB5897292220B35FC076A26F76D09D174AA5FB36C08A09FB3
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
adb.exe
Verdict:
Malicious activity
Analysis date:
2021-02-18 21:14:55 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file
Launching the Android Debug Bridge process
Deleting a recently created file
Enabling the 'hidden' option for recently created files
Creating a window
DNS request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling a "Do not show hidden files" option
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:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Drops PE files to the user root directory
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 356734 Sample: Yc8FhonJ45 Startdate: 23/02/2021 Architecture: WINDOWS Score: 100 68 AjanAj03-29211.portmap.host 2->68 72 Malicious sample detected (through community Yara rule) 2->72 74 Antivirus / Scanner detection for submitted sample 2->74 76 Multi AV Scanner detection for submitted file 2->76 78 6 other signatures 2->78 9 Yc8FhonJ45.exe 1 4 2->9         started        12 Yc8FhonJ45.exe 2 2->12         started        14 Yc8FhonJ45.exe 3 2->14         started        17 Yc8FhonJ45.exe 4 2->17         started        signatures3 process4 file5 86 Drops PE files to the user root directory 9->86 19 adb.exe 3 9->19         started        22 schtasks.exe 1 9->22         started        24 schtasks.exe 1 9->24         started        26 WerFault.exe 23 9 12->26         started        30 schtasks.exe 1 12->30         started        32 schtasks.exe 1 12->32         started        64 C:\Users\user\AppData\...\Yc8FhonJ45.exe.log, ASCII 14->64 dropped 34 schtasks.exe 1 14->34         started        36 schtasks.exe 1 14->36         started        66 C:\Users\user\adb.exe, PE32 17->66 dropped 38 schtasks.exe 17->38         started        signatures6 process7 dnsIp8 80 Antivirus detection for dropped file 19->80 82 Multi AV Scanner detection for dropped file 19->82 84 Machine Learning detection for dropped file 19->84 40 schtasks.exe 1 19->40         started        42 schtasks.exe 1 19->42         started        44 conhost.exe 22->44         started        46 conhost.exe 24->46         started        70 192.168.2.1 unknown unknown 26->70 62 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 26->62 dropped 48 conhost.exe 30->48         started        50 conhost.exe 32->50         started        52 conhost.exe 34->52         started        54 conhost.exe 36->54         started        file9 signatures10 process11 process12 56 conhost.exe 40->56         started        58 conhost.exe 42->58         started        60 WerFault.exe 52->60         started       
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Status:
Malicious
First seen:
2021-02-20 13:59:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
41 of 48 (85.42%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
f00f5f7f81d246a3d2c6aacef673f85de79e96a460641482d6da42b638d4ad2a
MD5 hash:
7ba56dde931a9492e178955f5365eaa5
SHA1 hash:
3eae24e697d449cf3360e179fcee7d2d34a911e3
Detections:
win_njrat_g1 win_njrat_w1
Please note that we are no longer able to provide a coverage score for Virus Total.

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:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:CN_disclosed_20180208_c
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Njrat
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:Ping_Del_method_bin_mem
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:win_njrat_w1
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

File information


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

Comments