MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2f938bc8150112d96a0ce206fd2bc9eaf65d296dbc56d55345b120ae943f363. 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 1 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2f938bc8150112d96a0ce206fd2bc9eaf65d296dbc56d55345b120ae943f363
SHA3-384 hash: 12a699d3c0dc6a173f6212c31c15bef11df9dfd1a967419f7ae379f280635f66bdfab5e23c465805285237f2f1876fa5
SHA1 hash: aa173192e21e6d4292cabb8d4d9c3d7cfba25eff
MD5 hash: 14e9933ea8dbfa5b1a142b30bacb67fa
humanhash: delta-five-oscar-fourteen
File name:14E9933EA8DBFA5B1A142B30BACB67FA.exe
Download: download sample
Signature njrat
Create hunting rule
File size:131'584 bytes
First seen:2021-05-25 18:30:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:wCZrG57vc3QWzmYsBVt5tHOctDR5n+0y2OMNrH4H3V7gtopm:wCGU3QWWzOctDR5+O3NrYXVEKpm
Threatray 23 similar samples on MalwareBazaar
TLSH 34D39B2377415366E6056A30301D13CDF570ED3856E3271AA492B88A6D33AA1C2BDFEB
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
141.255.145.149:6522

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
141.255.145.149:6522 https://threatfox.abuse.ch/ioc/59212/

Intelligence

File Origin
# of uploads :
1
# of downloads :
309
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
14E9933EA8DBFA5B1A142B30BACB67FA.exe
Verdict:
Malicious activity
Analysis date:
2021-05-25 21:25:39 UTC
Tags:
trojan rat njrat bladabindi
Link:
https://app.any.run/tasks/887e6e18-a570-4343-8976-9b539218a361

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
njRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/162112/
Detection(s):
Win.Packed.Razy-7334624-0
Create hunting rule

ditekSHen.INDICATOR.Packed.NyanXCAT-CSharpLoader.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for the window
Launching a process
Enabling the 'hidden' option for recently created files
Creating a file in the %AppData% directory
Creating a process from a recently created file
Unauthorized injection to a recently created process
Launching a tool to kill processes
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices by creating a special LNK file
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.
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e6abe8f5-4882-42f2-9812-3f3fa357bb51
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792068
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
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Drops PE files with benign system names
Found malware configuration
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)
Moves itself to temp directory
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 424466 Sample: tMOmOe1Kkj.exe Startdate: 25/05/2021 Architecture: WINDOWS Score: 100 81 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->81 83 Found malware configuration 2->83 85 Malicious sample detected (through community Yara rule) 2->85 87 11 other signatures 2->87 10 tMOmOe1Kkj.exe 3 2->10         started        14 tMOmOe1Kkj.exe 2 2->14         started        16 tMOmOe1Kkj.exe 2 2->16         started        18 4 other processes 2->18 process3 file4 77 C:\Users\user\AppData\...\tMOmOe1Kkj.exe.log, ASCII 10->77 dropped 89 Uses schtasks.exe or at.exe to add and modify task schedules 10->89 91 Drops PE files with benign system names 10->91 20 tMOmOe1Kkj.exe 1 2 10->20         started        23 tMOmOe1Kkj.exe 10->23         started        25 tMOmOe1Kkj.exe 14->25         started        27 tMOmOe1Kkj.exe 14->27         started        29 tMOmOe1Kkj.exe 16->29         started        signatures5 process6 file7 75 C:\Users\user\AppData\Roaming\svchost.exe, PE32 20->75 dropped 31 svchost.exe 20->31         started        34 taskkill.exe 1 20->34         started        36 taskkill.exe 1 20->36         started        46 2 other processes 20->46 38 taskkill.exe 25->38         started        40 taskkill.exe 25->40         started        42 taskkill.exe 1 29->42         started        44 taskkill.exe 1 29->44         started        process8 signatures9 93 Antivirus detection for dropped file 31->93 95 Multi AV Scanner detection for dropped file 31->95 97 Machine Learning detection for dropped file 31->97 99 Injects a PE file into a foreign processes 31->99 48 svchost.exe 31->48         started        51 svchost.exe 31->51         started        53 conhost.exe 34->53         started        55 conhost.exe 36->55         started        57 conhost.exe 38->57         started        59 conhost.exe 40->59         started        61 conhost.exe 42->61         started        63 conhost.exe 44->63         started        65 2 other processes 46->65 process10 signatures11 79 Moves itself to temp directory 48->79 67 taskkill.exe 48->67         started        69 taskkill.exe 48->69         started        process12 process13 71 conhost.exe 67->71         started        73 conhost.exe 69->73         started       
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a2f938bc8150112d96a0ce206fd2bc9eaf65d296dbc56d55345b120ae943f363/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2021-04-29 15:24:20 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ul4trpebkais3fvazyqg7uv4t2xwluuw3pcw2vjulmjav2kd6nrq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
1253331034363bc37bfe3c9b2664ef9ed65dc8422a25e70cba57e03a83e0d3e9
njrat
4696ddcc899baae332caf02dd919c685c8b158a9b41a40f344e96a098d055924
njrat
882c2d397243c456fdefc25467864dfa71ad1d3ee215730381bd7370bba3721a
njrat
b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33
njrat
b94ffef7801deeebedddfc0a7e6a370870f413926661f995b62457ecf3766194
njrat
bf0452ef3eb6c2e6f2ea84b2bf649a024f6190b0baae26e21c9790820171581f
njrat
ca4565f6d34227c8a57904ffcfd3c6c068ae5483bad28bb104c58ab569511c35
njrat
d9d43f3164fba1aceb44777a7e89de0d62ef5f196ae713effcc8a893eff20e5f
njrat
e3a10025b0133fbeb2e454ae7dfec1a6f0e49fee612f7139387f9396434762c6
njrat
f00f5f7f81d246a3d2c6aacef673f85de79e96a460641482d6da42b638d4ad2a
njrat
+ 13 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/210525-fhabktfzka/
Behaviour
Creates scheduled task(s)
Kills process with taskkill
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Enumerates connected drives
Drops startup file
Loads dropped DLL
Executes dropped EXE
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/a2f938bc8150112d96a0ce206fd2bc9eaf65d296dbc56d55345b120ae943f363

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
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:CN_disclosed_20180208_c
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:INDICATOR_EXE_Packed_NyanXCat_CSharpLoader
Create hunting rule
Author:ditekSHen
Description:Detects .NET executables utilizing NyanX-CAT C# Loader
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
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:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_njrat_w1
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/162112/

Comments