MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2. 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: 11


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2
SHA3-384 hash: 3b96cd4ef4b4ce5c70082db3ad25521a2d154f7320fd4bd683fd564e106ec82c71fee0f0ad1f79718f24139ed3d39938
SHA1 hash: 578defaa4988bfc938688c6dea302c47c8d86ba0
MD5 hash: d7e959acd7da6149aff2e71a7ab0713b
humanhash: eight-seventeen-california-charlie
File name:jYkChFzZ.exe
Download: download sample
Signature njrat
Create hunting rule
File size:32'256 bytes
First seen:2020-12-02 22:17:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 768:3pJEpBZhjzOzx5+R4s/Hu56HdAbiTinvanQmIDUu0tiqwj:0D6uukAbiT6UQVkmj
Threatray 52 similar samples on MalwareBazaar
TLSH 41E21BADFBEA4466D1BC0AB50571950013B8D103E523F77E4ECA24A62B6B7D84B84DF2
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
368
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/106462/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Ratenjay-1
Create hunting rule

Win.Trojan.Bladabindi-6192388-0
Create hunting rule

Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Win.Packed.Generic-7672854-0
Create hunting rule

Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Generic-9795615-0
Create hunting rule

Win.Packed.Generic-9795616-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Creating a window
DNS request
Connection attempt
Unauthorized injection to a recently created process
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a 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.
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/554108
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)
Creates autostart registry keys to launch java
Creates autostart registry keys with suspicious names
Detected njRat
Drops PE files to the startup folder
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
Protects its processes via BreakOnTermination flag
Uses dynamic DNS services
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: 326152 Sample: jYkChFzZ.exe Startdate: 02/12/2020 Architecture: WINDOWS Score: 100 33 striker223.ddns.net 2->33 37 Malicious sample detected (through community Yara rule) 2->37 39 Antivirus detection for dropped file 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 43 12 other signatures 2->43 9 jYkChFzZ.exe 1 5 2->9         started        12 Javaw.exe 3 2->12         started        14 Javaw.exe 2 2->14         started        16 Javaw.exe 2->16         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\Temp\Javaw.exe, PE32 9->29 dropped 31 C:\Users\user\AppData\...\jYkChFzZ.exe.log, ASCII 9->31 dropped 18 Javaw.exe 4 5 9->18         started        process6 dnsIp7 35 striker223.ddns.net 188.173.99.95, 1604, 49738, 49742 NG-ASSosBucuresti-Ploiestinr42-44RO Romania 18->35 27 C:\...\17cdd78b405de2165b1a9f366dd395d1.exe, PE32 18->27 dropped 45 Antivirus detection for dropped file 18->45 47 Multi AV Scanner detection for dropped file 18->47 49 Protects its processes via BreakOnTermination flag 18->49 51 4 other signatures 18->51 23 netsh.exe 1 3 18->23         started        file8 signatures9 process10 process11 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-12-02 22:18:05 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rdluswg5s6i2422zkxy3gsm5gk7o7ofov2xo7nvm4arolefpeoza._file
Verdict:
malicious
Similar samples:
1b735b93727cab4992aff0f4e2905ab57f0e3189b25cc164fb422685e6af70c7
njrat
23ee36c32f198966a793d71f9e2f0b4e0b8c1429202f38f2fab3a25c692c5c64
njrat
289bb9f2125f62945f3960f0fe72381aea008539b1c6ea29a81ad66bd2f247a9
njrat
3b4dffe14c52cb879f4b6863d8a8cffcea4bdecf1d43f01a4326398348bf1186
njrat
434c3b5ab0a2b53e04e4cdf6df69ab626919e3f5b9cffde95e178fe975d463b4
njrat
50291fb5edd36f2d5a467e0beed36433f35a118e220984afb775924135a62e20
njrat
6854fa9e5d8612a3323536436768fc4c75d69a98eb68b340f12b606878ab5839
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
9ff57f0d96d9acd70a97443615827c202175da5827ff23e000fb98567b6e366a
njrat
e1f3b8e2c8bf9af6fc2c90883dfe5e919de71d621c521ab8e3dddbf600cb49b6
njrat
+ 42 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat evasion persistence trojan
Link:
https://tria.ge/reports/201202-3dmnydvzbe/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Unpacked files
SH256 hash:
88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2
MD5 hash:
d7e959acd7da6149aff2e71a7ab0713b
SHA1 hash:
578defaa4988bfc938688c6dea302c47c8d86ba0
Detections:
win_njrat_g1
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/375ed1a3-46db-46a2-98aa-0574878a947a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2

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: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:MAL_Winnti_Sample_May18_1
Create hunting rule
Author:Florian Roth
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

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

Web download

njrat

Executable exe 88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2

(this sample)

  
Link
https://www.virustotal.com/gui/file/88d74958dd9791ae6b5955f1b3499d32beefb8aeaeaeefb6ace022e590af23b2/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/106462/

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