MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3. 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: 13


Intelligence 13 IOCs YARA 12 File information Comments
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SHA256 hash: dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3
SHA3-384 hash: 5ba6a90097c6a79e9230ef8140a1769761a2bb0edab9c08111afe87d4c726a5963506ef2eba5ed25c49df2ab6d3e057f
SHA1 hash: 55f775ad3c26c82731ac847033cc37e99d277e14
MD5 hash: e8480357d0364ec00678cd33569854ff
humanhash: florida-whiskey-nitrogen-may
File name:dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3
Download: download sample
Signature njrat
Create hunting rule
File size:1'189'376 bytes
First seen:2022-03-23 08:07:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:YNeBLLa03NqgGK8EMZPWnqb9U4Ez6jOawbin7d3gZ3j/:YMh+CTGK8EXgtEz6jOli7d3G3j/
Threatray 117 similar samples on MalwareBazaar
TLSH T1AA451252F644C866E4164331C4768EF0A5A6ED2DFF76128B219EBD09BCB339340E6E47
File icon (PE):PE icon
dhash icon 0fa03c4666e6e6f2 (1 x njrat)
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
218
Origin country :
n/a
Vendor Threat Intelligence
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/255458/
Detection(s):
PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a process with a hidden window
Creating a window
Searching for synchronization primitives
DNS request
Launching the process to change the firewall settings
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed shell32.dll
Link:
https://www.filescan.io/uploads/623ad578b94fb38cb4d799f8/reports/7ef221b1-06b0-4236-9437-f280974fc945/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a577aee0-7131-47e6-b014-5154f17c7632
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/962504
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
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Creates autostart registry keys with suspicious names
Detected njRat
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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 dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
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: 594982 Sample: B4CFVd8Ty8 Startdate: 23/03/2022 Architecture: WINDOWS Score: 100 31 games2014.ddns.net 2->31 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 11 other signatures 2->43 9 B4CFVd8Ty8.exe 1 5 2->9         started        13 123.exe 3 2->13         started        15 123.exe 2 2->15         started        17 123.exe 2 2->17         started        signatures3 process4 file5 27 C:\Users\user\AppData\Roaming\123.exe, PE32 9->27 dropped 29 C:\Users\user\AppData\...\B4CFVd8Ty8.exe.log, ASCII 9->29 dropped 53 Detected unpacking (changes PE section rights) 9->53 55 Detected unpacking (overwrites its own PE header) 9->55 57 Hides threads from debuggers 9->57 19 123.exe 4 4 9->19         started        signatures6 process7 dnsIp8 33 games2014.ddns.net 19->33 35 192.168.2.1 unknown unknown 19->35 45 Antivirus detection for dropped file 19->45 47 Multi AV Scanner detection for dropped file 19->47 49 Detected unpacking (changes PE section rights) 19->49 51 7 other signatures 19->51 23 netsh.exe 1 3 19->23         started        signatures9 process10 process11 25 conhost.exe 23->25         started       
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2021-07-03 00:13:43 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3ozphwkhtw6g6yyugyczzrufndw6eq6oe7xabvth2syowx5aeozq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
4322b25b29f160a08e809764a5dd86deda2289623331867004f85a905ce47769
njrat
5261874485f9fe16a78a558734e8652f93db1d544f3be331e7f6adc06f43ee98
njrat
53777546c28cb8912525bf2f3f0e7a69e29f61755b82cbba7d1a0c0d9c562536
njrat
6013c0ccf38e7be9221db0bc51597cd034cc07ca5c8ca1d0bc16d7b665700512
njrat
6c3d282a6a943f1b052246f5b3ceec91e400c0fdd04c22d1e44556e1150b3a5a
njrat
7fb40d2c4011f9aa66d25183702ac6872fff070ff9c7433fab6d3785ebc95f4c
njrat
9cda5e5ad6ca68a803516013fbf62e6b06383b20fccf1ee6aed4730c916a3b55
njrat
d162aea95889e147b96c2ab4da7cf27ec2538abd149a08f96d993fb7a41b002f
njrat
dec4cc7a63dd41b7c105a5880da857808127f67b8dc1718a39bc21e7a7073db2
njrat
+ 107 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/220323-jz41maaaf6/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Unpacked files
SH256 hash:
dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3
MD5 hash:
e8480357d0364ec00678cd33569854ff
SHA1 hash:
55f775ad3c26c82731ac847033cc37e99d277e14
Link:
https://www.unpac.me/results/ec9d8649-9dc0-4919-9328-f567173b1ebb/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/dbb2f3d9479d/report/overview.html
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/dbb2f3d9479dbc6f631436059cc68568ede243ce27ee00d667d4b0eb5fa023b3

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_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: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_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/255458/

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