MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712. 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: 14


Intelligence 14 IOCs 1 YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
SHA3-384 hash: 88f64d739e466003032bfd4a2b5100b84db33ae9fd37176c659b9c301c483f27262e3452c132d997b6fcfb11a606352e
SHA1 hash: c9662c1ee3ed00ea0f70d12a6e5ecfa50d1d9c77
MD5 hash: 2c701b9904603479c8e01a692383e396
humanhash: kitten-tennessee-lion-tennessee
File name:2C701B9904603479C8E01A692383E396.exe
Download: download sample
Signature njrat
Create hunting rule
File size:7'373'824 bytes
First seen:2021-08-13 07:55:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 196608:WHPdZwCsXDjDyf4L2WliXYrHW1LzbpbWg:eP4CEDHL2ciIrHWRzbB
Threatray 1'156 similar samples on MalwareBazaar
TLSH T19876330A726D55B6E9BB11388C50C91ACAB6B0731752C19F0E9844BB4F677D2AC33FE1
Reporter abuse_ch
Tags:exe NjRAT RAT


Avatar
abuse_ch
njrat C2:
103.91.207.190:4985

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
103.91.207.190:4985 https://threatfox.abuse.ch/ioc/184299/

Intelligence

File Origin
# of uploads :
1
# of downloads :
309
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/178867/
Detection(s):
Win.Packed.Razy-9625918-0
Create hunting rule

Win.Tool.Binder-9794371-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Deleting a recently created file
Sending a UDP request
Creating a file in the %AppData% subdirectories
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
DNS request
Connection attempt
Sending a custom TCP request
Creating a window
Unauthorized injection to a recently created process
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.
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b457477c-2426-459e-9fd0-a784e1072e3e
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/832314
Signature
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Connects to many ports of the same IP (likely port scanning)
Contains functionality to infect the boot sector
Detected unpacking (overwrites its own PE header)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Executable Used by PlugX in Uncommon Location
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Script Execution From Temp Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses cmd line tools excessively to alter registry or file data
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 464746 Sample: UyxDgv62Kw.exe Startdate: 13/08/2021 Architecture: WINDOWS Score: 100 85 103.91.207.190, 49770, 49773, 4985 CSNE-NETPLAY-ASCSNECoLtdTH Thailand 2->85 87 aa.larinax999.repl.co 35.186.245.55, 443, 49769 GOOGLEUS United States 2->87 89 2 other IPs or domains 2->89 91 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->91 93 Malicious sample detected (through community Yara rule) 2->93 95 Antivirus / Scanner detection for submitted sample 2->95 97 9 other signatures 2->97 10 UyxDgv62Kw.exe 4 2->10         started        14 MsMpEng.exe 2->14         started        signatures3 process4 file5 79 C:\Users\user\AppData\Local\Temp\temp.exe, PE32 10->79 dropped 81 C:\Users\user\AppData\Local\Temp\cmd.exe, PE32+ 10->81 dropped 83 C:\Users\user\AppData\...\UyxDgv62Kw.exe.log, ASCII 10->83 dropped 115 Detected unpacking (overwrites its own PE header) 10->115 117 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->117 16 temp.exe 10->16         started        19 cmd.exe 23 10->19         started        signatures6 process7 file8 61 C:\Users\user\AppData\...\MSMPENG_ASE.EXE, PE32 16->61 dropped 63 C:\Users\user\AppData\Local\Temp\ASE_2.EXE, PE32 16->63 dropped 22 ASE_2.EXE 16->22         started        26 MSMPENG_ASE.EXE 16->26         started        65 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 19->65 dropped 67 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 19->67 dropped 69 C:\Users\user\AppData\Local\...\python39.dll, PE32+ 19->69 dropped 71 17 other files (none is malicious) 19->71 dropped 99 Contains functionality to infect the boot sector 19->99 101 Adds a directory exclusion to Windows Defender 19->101 28 cmd.exe 19->28         started        signatures9 process10 file11 73 C:\Users\user\AppData\Roaming\MsMpEng.exe, PE32 22->73 dropped 75 C:\Users\user\AppData\...\tmp3768.tmp.bat, DOS 22->75 dropped 103 Antivirus detection for dropped file 22->103 105 Multi AV Scanner detection for dropped file 22->105 107 Machine Learning detection for dropped file 22->107 30 cmd.exe 22->30         started        33 cmd.exe 22->33         started        77 C:\Users\user\AppData\...\MsMpEng_ASE.exe.exe, PE32 26->77 dropped 109 Uses cmd line tools excessively to alter registry or file data 26->109 111 Adds a directory exclusion to Windows Defender 28->111 113 Hides threads from debuggers 28->113 35 cmd.exe 1 28->35         started        37 cmd.exe 28->37         started        39 cmd.exe 28->39         started        41 2 other processes 28->41 signatures12 process13 signatures14 119 Uses schtasks.exe or at.exe to add and modify task schedules 30->119 51 2 other processes 30->51 53 2 other processes 33->53 121 Adds a directory exclusion to Windows Defender 35->121 43 powershell.exe 23 35->43         started        45 conhost.exe 35->45         started        55 2 other processes 37->55 57 2 other processes 39->57 47 powershell.exe 22 41->47         started        49 conhost.exe 41->49         started        59 2 other processes 41->59 process15
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712/
Threat name:
ByteCode-MSIL.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2021-08-10 15:17:46 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bic7q6emukgv6trk3a4kg34dcbzsnuycd7c3zgbe7ywepx6qo4ja._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
16fc0cec13d88da3d0a36e4c42e733db8f1e21cafc18fd813a25cd0bc835f35a
njrat
220bb2b7deba41f53a8d86d677691aff283314a29c27cc49b2ba396699237825
njrat
438e8f8d626ca18bb5fbd3499cad058033b199c865badba6415e362d5b8dcd49
njrat
87b7b68ed10c1e85866fc17772627f0577d6f6e578ee8a36a0fb598e46c78cd0
njrat
b51c07d9a4e50ac499514d378320260821bd7486acd1077a6bddf8ab70c6a2b3
njrat
bcf7571a4d9b25fabdc2d6120b1b2d7bd8446ea2bc3a5da1d4127954920067de
njrat
ceddcfa72226e91f7435facafe6631d1385ca4d246d242d5136ac4e9462b8611
njrat
ecb8839117d73d33390c84f7f6e02f4970156ccb2da7b48083922f60625fa8be
njrat
fee6cda76d8c5b289b76deba1176049e529f51ac06f817a8a22ec77b17d74f35
njrat
+ 1'146 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat persistence pyinstaller rat suricata
Link:
https://tria.ge/reports/210813-fkdz4p6bgj/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Detects Pyinstaller
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
Malware Config
C2 Extraction:
null:null
Unpacked files
SH256 hash:
0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712
MD5 hash:
2c701b9904603479c8e01a692383e396
SHA1 hash:
c9662c1ee3ed00ea0f70d12a6e5ecfa50d1d9c77
Detections:
win_asyncrat_w0
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/4eb582f6-09f6-4d99-b1f2-10e80724be37/
Malware family:
njRat
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/0a05f8788ca2/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/0a05f8788ca28d5f4e2ad838a36f83107326d3021fc5bc9824fe2c47dfd07712

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:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:AsyncRat
Create hunting rule
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:INDICATOR_SUSPICIOUS_EXE_attrib
Create hunting rule
Author:ditekSHen
Description:Detects executables using attrib with suspicious attributes attributes
Rule name:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller.
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

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/178867/

Comments