MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4401786ef72c3baf0f60c69e620839a1967cb79d398aae5ec9f5eb84fa46705. 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 1 YARA 10 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4401786ef72c3baf0f60c69e620839a1967cb79d398aae5ec9f5eb84fa46705
SHA3-384 hash: 7bd0bc3afbe38c91fa94d54b0004c7b47dfd97178a803d37e471a75e5e5198beaef032daca96af2e63f147b4b62853aa
SHA1 hash: 4ee4eaabd947ad1bf69e59bb110b648c1afa1834
MD5 hash: 77dba4801ebc93b96b8166858fcbb288
humanhash: maine-romeo-six-burger
File name:77dba4801ebc93b96b8166858fcbb288.exe
Download: download sample
Signature njrat
Create hunting rule
File size:1'129'984 bytes
First seen:2022-03-09 18:06:14 UTC
Last seen:2022-03-09 19:47:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 80 x RedLineStealer)
ssdeep 24576:XiPHkR4fyOYGNLfSLPqnVWlQhgrPAflNg5cW8LjKoxyXxwI0AzsuSe7/o:SP1fxPLfuPqV3hQAfTgX4xAw49/o
Threatray 75 similar samples on MalwareBazaar
TLSH T1CE353350B11F80B1D1229175BC322B62710AAE57FC18283ED7576CE0BBBE67DA605F87
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
3.131.207.170:10254

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
3.131.207.170:10254 https://threatfox.abuse.ch/ioc/393316/

Intelligence

File Origin
# of uploads :
2
# of downloads :
330
Origin country :
n/a
Vendor Threat Intelligence
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/248835/
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Enabling the 'hidden' option for analyzed file
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for files in the %temp% directory
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Creating a window
Searching for synchronization primitives
DNS request
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching the process to change the firewall settings
Creating a file in the mass storage device
Enabling autorun by creating a file
Enabling threat expansion on mass storage devices
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
bladabindi enigma obfuscated packed shell32.dll
Link:
https://www.filescan.io/uploads/6228ecccdfdfa8501c819691/reports/e70aeb07-071c-440c-8886-73aea14d6b64/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/275f3b34-d786-4c4d-86f5-3139e2b77418
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/953543
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
Connects to many ports of the same IP (likely port scanning)
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops PE files to the startup folder
Drops PE files with benign system names
Found malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Protects its processes via BreakOnTermination flag
Sigma detected: Drops fake system file at system root drive
Sigma detected: File Created with System Process Name
Sigma detected: New RUN Key Pointing to Suspicious Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (window names)
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: 586018 Sample: OS79mNnAxr.exe Startdate: 09/03/2022 Architecture: WINDOWS Score: 100 42 2.tcp.ngrok.io 2->42 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Multi AV Scanner detection for domain / URL 2->52 54 Found malware configuration 2->54 56 16 other signatures 2->56 9 OS79mNnAxr.exe 1 6 2->9         started        13 driverpack3.exe 3 2->13         started        15 driverpack3.exe 2 2->15         started        17 driverpack3.exe 2 2->17         started        signatures3 process4 file5 36 C:\Users\user\AppData\...\driverpack3.exe, PE32 9->36 dropped 38 C:\Users\...\driverpack3.exe:Zone.Identifier, ASCII 9->38 dropped 40 C:\Users\user\AppData\...\OS79mNnAxr.exe.log, ASCII 9->40 dropped 66 Detected unpacking (changes PE section rights) 9->66 68 Detected unpacking (overwrites its own PE header) 9->68 70 Tries to evade analysis by execution special instruction which cause usermode exception 9->70 19 driverpack3.exe 2 11 9->19         started        72 Hides threads from debuggers 13->72 signatures6 process7 dnsIp8 44 2.tcp.ngrok.io 13.59.15.185, 10254, 49736, 49741 AMAZON-02US United States 19->44 46 3.128.107.74, 10254, 49752, 49754 AMAZON-02US United States 19->46 48 4 other IPs or domains 19->48 28 C:\svchost.exe, PE32 19->28 dropped 30 C:\...\1bb385e70bc0bd67b4dbded90e61e35e.exe, PE32 19->30 dropped 32 C:\svchost.exe:Zone.Identifier, ASCII 19->32 dropped 34 2 other malicious files 19->34 dropped 58 Antivirus detection for dropped file 19->58 60 Multi AV Scanner detection for dropped file 19->60 62 Detected unpacking (changes PE section rights) 19->62 64 12 other signatures 19->64 24 netsh.exe 1 3 19->24         started        file9 signatures10 process11 process12 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4401786ef72c3baf0f60c69e620839a1967cb79d398aae5ec9f5eb84fa46705/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2022-03-07 15:52:03 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
34 of 42 (80.95%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wrabpbxpolb3v4hwbru6miedtimwps3z2omkvzpmt5plqt5em4cq._file
Verdict:
malicious
Similar samples:
4322b25b29f160a08e809764a5dd86deda2289623331867004f85a905ce47769
njrat
4d45b8210c1a3ee305e9adcf9f7e055b562c6c8977e1210782a9a57155123417
njrat
5261874485f9fe16a78a558734e8652f93db1d544f3be331e7f6adc06f43ee98
njrat
6013c0ccf38e7be9221db0bc51597cd034cc07ca5c8ca1d0bc16d7b665700512
njrat
6c3d282a6a943f1b052246f5b3ceec91e400c0fdd04c22d1e44556e1150b3a5a
njrat
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
njrat
7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
njrat
d162aea95889e147b96c2ab4da7cf27ec2538abd149a08f96d993fb7a41b002f
njrat
+ 65 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/220309-wqbc6sbdc2/
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
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
b4401786ef72c3baf0f60c69e620839a1967cb79d398aae5ec9f5eb84fa46705
MD5 hash:
77dba4801ebc93b96b8166858fcbb288
SHA1 hash:
4ee4eaabd947ad1bf69e59bb110b648c1afa1834
Link:
https://www.unpac.me/results/0f56b500-28ad-4290-a1cc-89ab929c6b81/
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/b4401786ef72c3baf0f60c69e620839a1967cb79d398aae5ec9f5eb84fa46705

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Ngrok_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an ngrok.io URL. This can be used as C2 channel
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_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.smominru.
Rule name:XOREngine_Misc_XOR_Func
Create hunting rule
Author:smiller cc @florian @wesley idea on implementation with yara's built in XOR function
Description:Use with care, https://twitter.com/cyb3rops/status/1237042104406355968

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/248835/

Comments