MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda. 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: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
SHA3-384 hash: 1704f458e3042a4cd93957b346d0adbc15cdcc9358ff8a5a38e35e75a2b3d2a0780ffece4c7faf7e3df70e64d86a597e
SHA1 hash: 32d0f2300cd33821f7b295ee87d725897bc9f836
MD5 hash: 116310d40f4d30db7b509c2193a8da77
humanhash: oxygen-fourteen-kitten-texas
File name:b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
Download: download sample
Signature njrat
Create hunting rule
File size:1'129'472 bytes
First seen:2021-02-28 07:10:17 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 24576:3E4MFNzBmi04Zpg7HKjfMQalvGaRU5iNMzBq6tTyKHp:1MF7mi5/M3QaoaRU5iuUwl
Threatray 5 similar samples on MalwareBazaar
TLSH D53533F833D54E1DC655E8B9A14945D9CFAB64EDF3040883BFD26B1863CE036289B18D
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1.rar
Verdict:
Malicious activity
Analysis date:
2021-02-26 17:02:44 UTC
Tags:
trojan rat njrat bladabindi
Link:
https://app.any.run/tasks/0afc4b34-f419-490a-9940-7b8be0116089

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
EnigmaStub
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119816/
Result
Verdict:
Malware
Maliciousness:
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.
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/621120
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Detected njRat
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops PE files to the startup folder
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
PE file contains section with special chars
PE file has nameless sections
Protects its processes via BreakOnTermination flag
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 359553 Sample: aYqoy7xF7y Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 36 4.tcp.ngrok.io 2->36 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for dropped file 2->48 50 13 other signatures 2->50 9 aYqoy7xF7y.exe 1 5 2->9         started        13 Server.exe 3 2->13         started        15 system32t.exe 3 2->15         started        17 5 other processes 2->17 signatures3 process4 file5 32 C:\Users\user\AppData\Roaming\system32t.exe, PE32 9->32 dropped 34 C:\Users\user\AppData\...\aYqoy7xF7y.exe.log, ASCII 9->34 dropped 60 Detected unpacking (changes PE section rights) 9->60 62 Detected unpacking (overwrites its own PE header) 9->62 64 Hides threads from debuggers 9->64 19 system32t.exe 3 6 9->19         started        66 Antivirus detection for dropped file 13->66 68 Multi AV Scanner detection for dropped file 13->68 70 Machine Learning detection for dropped file 13->70 signatures6 process7 dnsIp8 38 3.129.187.220, 15521, 49744 AMAZON-02US United States 19->38 40 3.131.147.49, 15521, 49757, 49760 AMAZON-02US United States 19->40 42 3 other IPs or domains 19->42 28 C:\Users\user\AppData\...\Java update.exe, PE32 19->28 dropped 30 C:\Users\user\AppData\Local\Temp\Server.exe, PE32 19->30 dropped 52 Antivirus detection for dropped file 19->52 54 Multi AV Scanner detection for dropped file 19->54 56 Detected unpacking (changes PE section rights) 19->56 58 5 other signatures 19->58 24 schtasks.exe 1 19->24         started        file9 signatures10 process11 process12 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-26 17:36:39 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  1/5
Verdict:
suspicious
Similar samples:
4824693d37ee0c444b89e21a2ae1cba396927f299e88751759635b2795c1bc96
njrat
5261874485f9fe16a78a558734e8652f93db1d544f3be331e7f6adc06f43ee98
njrat
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
9cda5e5ad6ca68a803516013fbf62e6b06383b20fccf1ee6aed4730c916a3b55
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/210228-jkp8x71jg6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: GetForegroundWindowSpam
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
Drops startup file
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
MD5 hash:
116310d40f4d30db7b509c2193a8da77
SHA1 hash:
32d0f2300cd33821f7b295ee87d725897bc9f836
Link:
https://www.unpac.me/results/d48ff3c3-18c3-4952-a254-68f10322c1fb/
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/b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda

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:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
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:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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/119816/

Comments