MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d
SHA3-384 hash: 9ae71503e9aa84108efdad58a9a627c41ffc90efe0e571ab4618fa9d0c74d5270eaa96d1c22d8f472c3bb03df6a07839
SHA1 hash: 6bb1a1a075b532d59bf0026050811d959714dc2b
MD5 hash: bebd9efbcd2d7081fc1bdaa7034b38d5
humanhash: colorado-iowa-cola-snake
File name:f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d
Download: download sample
Signature njrat
Create hunting rule
File size:1'126'912 bytes
First seen:2021-02-28 07:23:42 UTC
Last seen:2021-02-28 08:59:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:78lR88KpDlcPQbgeg8vP9Kw0rGWAmT3ugy0+0FEeHF/c+zSSev:78lR88KpDiPVeg8tKbTNT+ttYEUFbSzv
Threatray 3 similar samples on MalwareBazaar
TLSH D7353389A6820E9BF50D737E849CE28B59BBB7434A3744BC5E07529658E0BCB11F74F0
Reporter JAMESWT_WT
Tags:NjRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
593
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d
Verdict:
Malicious activity
Analysis date:
2021-02-28 07:52:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/666c213a-4d3f-49b2-9e53-6f522af07b2b

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/119946/
Detection(s):
PUA.Win.Packer.EnigmaProtector-19
Create hunting rule

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

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/620826
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Changes security center settings (notifications, updates, antivirus, firewall)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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)
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
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 359405 Sample: EjwfujV2N9 Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for dropped file 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 12 other signatures 2->50 8 EjwfujV2N9.exe 1 3 2->8         started        12 Server.exe 1 2->12         started        14 svchost.exe 2->14         started        16 9 other processes 2->16 process3 dnsIp4 36 C:\Users\user\AppData\Roaming\svchost.exe, PE32 8->36 dropped 38 C:\Users\user\AppData\...jwfujV2N9.exe.log, ASCII 8->38 dropped 60 Detected unpacking (changes PE section rights) 8->60 62 Detected unpacking (overwrites its own PE header) 8->62 64 Hides threads from debuggers 8->64 66 Drops PE files with benign system names 8->66 19 svchost.exe 3 4 8->19         started        68 Antivirus detection for dropped file 12->68 70 Multi AV Scanner detection for dropped file 12->70 72 Machine Learning detection for dropped file 12->72 74 Changes security center settings (notifications, updates, antivirus, firewall) 14->74 24 MpCmdRun.exe 14->24         started        40 127.0.0.1 unknown unknown 16->40 file5 signatures6 process7 dnsIp8 42 192.168.0.5, 1604 unknown unknown 19->42 32 C:\Users\user\AppData\...\Java update.exe, PE32 19->32 dropped 34 C:\Users\user\AppData\Local\Temp\Server.exe, PE32 19->34 dropped 52 Antivirus detection for dropped file 19->52 54 System process connects to network (likely due to code injection or exploit) 19->54 56 Multi AV Scanner detection for dropped file 19->56 58 6 other signatures 19->58 26 schtasks.exe 1 19->26         started        28 conhost.exe 24->28         started        file9 signatures10 process11 process12 30 conhost.exe 26->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d/
Threat name:
Win32.Packed.EnigmaProtector
Create hunting rule
Status:
Malicious
First seen:
2021-02-27 21:11:10 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6a5ulpzzmaqgeffjcpajvlurvxcs6gtboezuxmgaxwhzn5g6vawq._file
Verdict:
suspicious
Similar samples:
6a36cc22b3a8a071c70b9213afa2e2f685f8729e3ac5daadabbf97cecda4f104
njrat
7ec599424a161fe942345c2336dd0cfb8c7d64e6e72b8e90efd999328b06cc04
njrat
9a080e918c88adb048ffca38c0604318eee80e19be5a578186a63cdd64d45a41
njrat
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/210228-4bagqmhnxn/
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:
f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d
MD5 hash:
bebd9efbcd2d7081fc1bdaa7034b38d5
SHA1 hash:
6bb1a1a075b532d59bf0026050811d959714dc2b
Link:
https://www.unpac.me/results/58432c73-08ed-436c-bb8d-eb2dfd24a055/
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/f03b45bf3960206214a913c09aae91adc52f1a6171334bb0c0bd8f96f4dea82d

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/119946/

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