MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dfe4b6b4f1bda60e6870666e6e4809a8e3ee4827db737525c9313bfbc87bf5c1. 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 11 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dfe4b6b4f1bda60e6870666e6e4809a8e3ee4827db737525c9313bfbc87bf5c1
SHA3-384 hash: f82c41f4439823a1a0cbb4d4d9e50fd07686be435c553dff2a594c37901a1ee54b2dc01168ff20e7c211143805c95458
SHA1 hash: 0b6126aaab291e1dbe0006411eff27789994aa78
MD5 hash: f2321adc190e7db9b1f3b85e88f7ae54
humanhash: texas-nebraska-nevada-salami
File name:ja.exe
Download: download sample
Signature njrat
Create hunting rule
File size:95'232 bytes
First seen:2022-07-04 16:59:14 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 768:WY3XKBD9O/pBcxYsbae6GIXb9pDX2b98PL0OXLeuXxrjEtCdnl2pi1Rz4Rk3+sGw:NKzOx6baIa9RPj00ljEwzGi1dD6DKgS
Threatray 630 similar samples on MalwareBazaar
TLSH T11593F84977E56524E4BF56F79871F2004E34B48B1602E39D48F219AA1B33AC44F89FEB
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter Anonymous
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ja.exe
Verdict:
Malicious activity
Analysis date:
2022-07-04 16:13:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b24ae3ff-65da-4f5d-bc0d-a16d72384853

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Generic-9795615-0
Create hunting rule

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

Win.Trojan.B-468
Create hunting rule

Win.Trojan.Ratenjay-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
Creating a file in the %AppData% directory
Creating a process with a hidden window
Creating a file
Enabling the 'hidden' option for recently created files
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Launching the process to change network settings
Creating a process from a recently created file
Searching for synchronization primitives
Launching a process
Launching the process to change the firewall settings
Creating a file in the mass storage device
Unauthorized injection to a recently created process
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd.exe fingerprint fingerprint greyware keylogger njrat packed rat rundll32.exe stealer update.exe winnti
Link:
https://www.filescan.io/uploads/62c31cd0783441cda104d9a8/reports/6935ac7a-ba35-4b49-8787-9ee8a8ed24d1/overview
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/8bbd08cd-eb91-407d-bd8e-ad22972781f9
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1024299
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to spread to USB devices (.Net source)
Creates autorun.inf (USB autostart)
Deletes itself after installation
Disables the Windows task manager (taskmgr)
Drops PE files with benign system names
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
Uses netsh to modify the Windows network and firewall settings
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: 656794 Sample: ja.exe Startdate: 04/07/2022 Architecture: WINDOWS Score: 100 61 Malicious sample detected (through community Yara rule) 2->61 63 Antivirus detection for dropped file 2->63 65 Antivirus / Scanner detection for submitted sample 2->65 67 8 other signatures 2->67 8 ja.exe 2 14 2->8         started        12 StUpdate.exe 3 2->12         started        14 StUpdate.exe 2 2->14         started        process3 file4 51 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 8->51 dropped 53 C:\Umbrella.flv.exe, PE32 8->53 dropped 55 C:\autorun.inf, Microsoft 8->55 dropped 57 3 other malicious files 8->57 dropped 77 Creates autorun.inf (USB autostart) 8->77 79 Uses netsh to modify the Windows network and firewall settings 8->79 81 Modifies the windows firewall 8->81 89 2 other signatures 8->89 16 svchost.exe 9 8->16         started        21 netsh.exe 3 8->21         started        23 netsh.exe 1 3 8->23         started        25 netsh.exe 3 8->25         started        83 Antivirus detection for dropped file 12->83 85 Multi AV Scanner detection for dropped file 12->85 87 Machine Learning detection for dropped file 12->87 signatures5 process6 dnsIp7 59 127.0.0.1 unknown unknown 16->59 49 C:\Users\user\AppData\Local\...\StUpdate.exe, PE32 16->49 dropped 69 Antivirus detection for dropped file 16->69 71 Multi AV Scanner detection for dropped file 16->71 73 Machine Learning detection for dropped file 16->73 75 2 other signatures 16->75 27 netsh.exe 3 16->27         started        29 netsh.exe 3 16->29         started        31 netsh.exe 3 16->31         started        33 schtasks.exe 1 16->33         started        35 conhost.exe 21->35         started        37 conhost.exe 23->37         started        39 conhost.exe 25->39         started        file8 signatures9 process10 process11 41 conhost.exe 27->41         started        43 conhost.exe 29->43         started        45 conhost.exe 31->45         started        47 conhost.exe 33->47         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dfe4b6b4f1bda60e6870666e6e4809a8e3ee4827db737525c9313bfbc87bf5c1/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-06-25 04:55:00 UTC
File Type:
PE (.Net Exe)
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=37slnnhrxwta42dqmzxg4sajvdr64sbh3nzxkjojge57xsd36xaq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
3719f664482b9f165bab3a6baa43c8449591ae0ce67638ad0559bbf80a2d8dcb
njrat
376c8edbafb727e3c48081ac3c6751dd6b73e73462c2a26794b37cd44be4344d
njrat
6000cb4765d6219aeea0210a1ecec6af293e3ee6e330f560e30c043987f5aeb7
njrat
71a0baa2c07547f62e47907ccfe44574a8eda034270492129c5bd2ed929bb4c6
njrat
a6a135c2b4d2e961071a0291c88f3690fe0734ba8f8b54b41ef339d643325fb9
njrat
cbacfe984cbeab12d25335ccadbd7a5ecbb2b1489357cc4cea089c4448ddfa78
njrat
+ 620 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked evasion trojan
Link:
https://tria.ge/reports/220704-vhy9lacdc2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops autorun.inf file
Checks computer location settings
Deletes itself
Loads dropped DLL
Disables Task Manager via registry modification
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
FRANSESCOTI3LjAuFRANSESCOC4x:NTU1Mg==
Unpacked files
SH256 hash:
dfe4b6b4f1bda60e6870666e6e4809a8e3ee4827db737525c9313bfbc87bf5c1
MD5 hash:
f2321adc190e7db9b1f3b85e88f7ae54
SHA1 hash:
0b6126aaab291e1dbe0006411eff27789994aa78
Link:
https://www.unpac.me/results/00697d15-974c-47b1-81e4-2b1be4873b64/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dfe4b6b4f1bd/report/overview.html
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: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:CN_disclosed_20180208_c_RID2E71
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:malware_Njrat_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:MAL_njrat
Create hunting rule
Author:SECUINFRA Falcon Team
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:MAL_Winnti_Sample_May18_1_RID3003
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: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_netsh_firewall_command
Create hunting rule
Author:SECUINFRA Falcon Team

File information

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

Web download

njrat

Executable exe dfe4b6b4f1bda60e6870666e6e4809a8e3ee4827db737525c9313bfbc87bf5c1

(this sample)

Joe
Joe Sandbox
https://www.joesandbox.com/analysis/1024299#engines
  
Delivery method
Distributed via web download

Comments


Avatar
moly commented on 2022-07-04 17:17:15 UTC

njRAT