MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f
SHA3-384 hash: a4ef7616af7433a8faf7ef0299cafb56010eb6863ec8d679e92609999a5f2f6a0a72c4c7fa2f4896e924534a66553780
SHA1 hash: 77f23b70816e226b92689738850c72927997fa0f
MD5 hash: dfbff43335f3aeadda8e8b8be6ceeaa3
humanhash: chicken-butter-zebra-seventeen
File name:206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f
Download: download sample
Signature njrat
Create hunting rule
File size:1'126'400 bytes
First seen:2021-02-28 07:23:38 UTC
Last seen:2021-02-28 08:59:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:aWA9qc4CIO1TdwompuFsqnp2tiISU0WiFp+U1C:ZLcXI+ypudItitU07p+p
Threatray 6 similar samples on MalwareBazaar
TLSH F13533CF62907E46C177ABBE3E4B61D2977B45F347B2A7E768502B429188D00BB01B53
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
591
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f
Verdict:
No threats detected
Analysis date:
2021-02-28 08:27:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/83a8f847-eeb1-435c-9d47-9f5e2190ec71

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/119945/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

PUA.Win.Packer.EnigmaProtector-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for analyzed file
Creating a file in the Windows directory
Creating a process from a recently created file
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Creating a window
Sending a UDP request
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 by creating the autorun.inf autorun 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.
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
spre.troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/620828
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
Contains functionality to log keystrokes (.Net Source)
Creates an autostart registry key pointing to binary in C:\Windows
Creates autorun.inf (USB autostart)
Creates autostart registry keys with suspicious names
Detected njRat
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the startup folder
Drops PE files with benign system names
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
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: 359407 Sample: MrtpUEKZy5 Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for dropped file 2->47 49 14 other signatures 2->49 8 MrtpUEKZy5.exe 1 6 2->8         started        12 WindowsSystem.exe 3 2->12         started        14 WindowsSystem.exe 2 2->14         started        16 WindowsSystem.exe 2 2->16         started        process3 file4 35 C:\Windows\WindowsSystem.exe, PE32 8->35 dropped 37 C:\...\WindowsSystem.exe:Zone.Identifier, ASCII 8->37 dropped 39 C:\Users\user\AppData\...\MrtpUEKZy5.exe.log, ASCII 8->39 dropped 59 Detected unpacking (changes PE section rights) 8->59 61 Detected unpacking (overwrites its own PE header) 8->61 63 Drops executables to the windows directory (C:\Windows) and starts them 8->63 18 WindowsSystem.exe 2 11 8->18         started        65 Hides threads from debuggers 12->65 signatures5 process6 dnsIp7 41 yasuo123.ddns.net 176.124.8.182, 1605, 49726 DIDAN-ASRU Russian Federation 18->41 27 C:\svchost.exe, PE32 18->27 dropped 29 C:\...\424a5048921bc36e2fdf1c1147643001.exe, PE32 18->29 dropped 31 C:\svchost.exe:Zone.Identifier, ASCII 18->31 dropped 33 2 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 Detected unpacking (changes PE section rights) 18->55 57 9 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/206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-27 18:45:46 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ebw2u7lcqugfpgli6fcwb4dlunrn5usr3i5i7lvzumy53brls4hq._file
Verdict:
malicious
Similar samples:
4824693d37ee0c444b89e21a2ae1cba396927f299e88751759635b2795c1bc96
njrat
798eab01e5d7f1c78e3f7db514f3611ae85e468405af144245f55c8f2657c6d9
njrat
88e03236b248d004923161c7928a1546cdffd0b6e8c30a22b1d49b05dca9b2da
njrat
9cda5e5ad6ca68a803516013fbf62e6b06383b20fccf1ee6aed4730c916a3b55
njrat
b83c0954a3138f4c18e4f6a5182768b5a1efbb13c69dcf01d63eb81f63456eda
njrat
da6e9bd269fbd3904c007d8c19272f372211b3930567d21b977d34716317143a
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
evasion persistence
Link:
https://tria.ge/reports/210228-sv87zqh262/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Drops autorun.inf file
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Drops startup file
Executes dropped EXE
Modifies Windows Firewall
Unpacked files
SH256 hash:
206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f
MD5 hash:
dfbff43335f3aeadda8e8b8be6ceeaa3
SHA1 hash:
77f23b70816e226b92689738850c72927997fa0f
Link:
https://www.unpac.me/results/6a4a090d-3b56-48d6-9803-ed1310dd3b38/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Enigma
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/206daa7d62850c579968f14560f06ba362ded251da3a8faeb9a331dd862b970f

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: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_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: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/119945/

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