MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211. 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 11 File information Comments
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SHA256 hash: 99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211
SHA3-384 hash: aa2f6adf43650312ca8b8b218f8b1be3beca5eea45d8f1873316d6d65a39987e912274ed4605dd8b47b993d3da0489bc
SHA1 hash: 85c3241d9b3fa7c54a44213e10a4e84ea4e3ffcb
MD5 hash: 66cb3749d19416d24ee3926d046cb195
humanhash: seventeen-friend-twenty-moon
File name:99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211
Download: download sample
Signature njrat
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File size:95'232 bytes
First seen:2022-03-23 09:33:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 1536:FC3BNvGfr2p4dTl/hDjEwzGi1dDNDqgS:FCufr2p4dB/Gi1dxv
Threatray 103 similar samples on MalwareBazaar
TLSH T1A193D74977E96524E1BF56F75871F2004E34B44B1602E39D88F219EA1A33AC44F89FEB
Reporter JAMESWT_WT
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
254
Origin country :
n/a
Vendor Threat Intelligence
Detection:
njRat
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Link:
https://www.capesandbox.com/analysis/256231/
Detection(s):
Win.Packed.Generic-7672854-0
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Win.Packed.Generic-7672855-0
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Win.Packed.njRAT-7672853-1
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Win.Packed.Generic-9795615-0
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Win.Trojan.Generic-6417450-0
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Win.Trojan.B-468
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Win.Trojan.Ratenjay-1
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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 from a recently created file
Creating a file
Creating a process with a hidden window
Creating a file in the Windows subdirectories
Enabling the 'hidden' option for recently created files
Creating a file in the Program Files subdirectories
Searching for synchronization primitives
Sending a custom TCP request
Unauthorized injection to a recently created process
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:
anti-vm cmd.exe control.exe explorer.exe fingerprint fingerprint greyware keylogger msconfig.exe netsh.exe njrat obfuscated packed rat replace.exe rundll32.exe schtasks.exe stealer update.exe winnti
Link:
https://www.filescan.io/uploads/623ae9d70cd58dbd92de6efd/reports/efae7e75-f481-4190-b941-a5bbfb3566b7/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.
Gathering data
Result
Threat name:
Njrat
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Detection:
malicious
Classification:
spre.troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/962638
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)
Drops PE files to the document folder of the user
Drops PE files to the startup folder
Found malware configuration
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
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 595132 Sample: uN07TdhKY4 Startdate: 23/03/2022 Architecture: WINDOWS Score: 100 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for dropped file 2->47 49 9 other signatures 2->49 8 uN07TdhKY4.exe 7 2->8         started        12 Microsoft Corporation.exe 3 2->12         started        14 Explower.exe 3 2->14         started        16 2 other processes 2->16 process3 dnsIp4 41 192.168.2.1 unknown unknown 8->41 35 C:\Users\user\AppData\Roaming\server.exe, PE32 8->35 dropped 37 C:\Users\user\AppData\...\uN07TdhKY4.exe.log, ASCII 8->37 dropped 18 server.exe 1 24 8->18         started        file5 process6 dnsIp7 39 185.247.143.43, 49752, 49753, 49755 ASKONTELRU Russian Federation 18->39 27 C:\system.exe, PE32 18->27 dropped 29 C:\Windows\SysWOW64xplower.exe, PE32 18->29 dropped 31 C:\Users\user\Favoritesxplower.exe, PE32 18->31 dropped 33 13 other malicious files 18->33 dropped 51 Antivirus detection for dropped file 18->51 53 Multi AV Scanner detection for dropped file 18->53 55 Drops PE files to the document folder of the user 18->55 57 5 other signatures 18->57 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/99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
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Status:
Malicious
First seen:
2022-03-14 21:03:00 UTC
File Type:
PE (.Net Exe)
AV detection:
35 of 42 (83.33%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
01a7fccd0aa64adcaa13e7109f8c969cabefcba820efaafbd75c6cd28490fe64
njrat
1e55c31399aacc9290f92d5f269897a82c8674c3a5f2cdd67068cf54b4179269
njrat
376c8edbafb727e3c48081ac3c6751dd6b73e73462c2a26794b37cd44be4344d
njrat
71a0baa2c07547f62e47907ccfe44574a8eda034270492129c5bd2ed929bb4c6
njrat
87b9a82fa05019692e89dc944a4fe1ab669d1c844abfd509c7e3648a024d4a73
njrat
b0e4ffe4f149f9b6435fec757518ae2ba99293d416a28a3aebda4e877c2013e0
njrat
bbee2132c158e1f3ca52fecfc2e0f3af061336e7dce9ad7a529191bf9d92491e
njrat
f566dfebf709acbcd83164e334fb70056419a1c75c03ff843804896a6fb8eb9a
njrat
+ 93 additional samples on MalwareBazaar
Result
Malware family:
njrat
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Score:
  10/10
Tags:
family:njrat botnet:hacked evasion trojan
Link:
https://tria.ge/reports/220323-ljw17abgd8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops autorun.inf file
Drops file in System32 directory
Drops startup file
Loads dropped DLL
Executes dropped EXE
Modifies Windows Firewall
njRAT/Bladabindi
Malware Config
C2 Extraction:
FRANSESCOTg1LjI0Ny4xNDFRANSESCOuNDFRANSESCOStrik:NTU1NQ==
Unpacked files
SH256 hash:
99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211
MD5 hash:
66cb3749d19416d24ee3926d046cb195
SHA1 hash:
85c3241d9b3fa7c54a44213e10a4e84ea4e3ffcb
Link:
https://www.unpac.me/results/f88c5281-6509-4452-9c09-c7a6aad3d704/
Malware family:
Winnti Group
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/99a546652247/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/99a5466522471fa6514592bc9bc58db9d9745334118a229088f2fa10c6469211

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
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Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:malware_Njrat_strings
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Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
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Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:MAL_njrat
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Author:SECUINFRA Falcon Team
Rule name:MAL_Winnti_Sample_May18_1
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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
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Rule name:Skystars_LightDefender_Njrat_Rule
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Author:Skystars LightDefender
Description:Detects Njrat
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_netsh_firewall_command
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Author:SECUINFRA Falcon Team

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/256231/

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