MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9
SHA3-384 hash: 77d31c2fa87c9866ecff688a17dc3fb32e72ca1fd363043000ab359ccbc7fc6858457f138a077ce47dbf80fcb660af5c
SHA1 hash: d1299521b1153a8cb23cd029ba472ae2e3ed1f19
MD5 hash: 09318b28ecd23ce09651688c36d407db
humanhash: pasta-wolfram-hotel-hawaii
File name:frZUrcvf.exe
Download: download sample
Signature njrat
Create hunting rule
File size:44'032 bytes
First seen:2020-09-25 14:02:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'660 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:wZy/4KdnOFohMFsyi8J1mf4r7tMEjgnHBOm9D9O5UE5QzwBlpJNakkjh/TzF7pWb:2je6Fpi4AcQcvQO+Bu+L
Threatray 16 similar samples on MalwareBazaar
TLSH 8F13E68CB694E175D5FF8BF0B492B2890B71A01B9902D30F99F154D94BB3EC09A11EE7
Reporter pmelson
Tags:exe NjRAT Njratgold

Intelligence

File Origin
# of uploads :
1
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/65872/
Detection(s):
Win.Trojan.Generic-6417450-0
Create hunting rule

Win.Packed.Generic-7672855-0
Create hunting rule

Win.Packed.njRAT-7672853-1
Create hunting rule

Win.Packed.Msilperseus-9220094-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the Windows directory
Sending a UDP request
Creating a process from a recently created file
Creating a file
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
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
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/475257
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an autostart registry key pointing to binary in C:\Windows
Detected njRat
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the startup folder
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
Protects its processes via BreakOnTermination flag
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 290079 Sample: frZUrcvf.exe Startdate: 25/09/2020 Architecture: WINDOWS Score: 100 36 pmoses13-47804.portmap.io 2->36 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for dropped file 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 7 other signatures 2->46 9 frZUrcvf.exe 1 5 2->9         started        13 Server.exe 3 2->13         started        15 WinSystemt.exe 3 2->15         started        17 4 other processes 2->17 signatures3 process4 file5 32 C:\Windows\WinSystemt.exe, PE32 9->32 dropped 34 C:\Users\user\AppData\...\frZUrcvf.exe.log, ASCII 9->34 dropped 56 Drops executables to the windows directory (C:\Windows) and starts them 9->56 19 WinSystemt.exe 3 6 9->19         started        58 Antivirus detection for dropped file 13->58 60 Multi AV Scanner detection for dropped file 13->60 62 Machine Learning detection for dropped file 13->62 signatures6 process7 dnsIp8 38 pmoses13-47804.portmap.io 193.161.193.99, 47804, 49716, 49717 BITREE-ASRU Russian Federation 19->38 28 C:\Users\user\...\Windows Process Manager.exe, PE32 19->28 dropped 30 C:\Users\user\AppData\Local\Temp\Server.exe, PE32 19->30 dropped 48 Antivirus detection for dropped file 19->48 50 Multi AV Scanner detection for dropped file 19->50 52 Protects its processes via BreakOnTermination flag 19->52 54 3 other signatures 19->54 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/27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-09-25 14:04:07 UTC
AV detection:
27 of 29 (93.10%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e5acxcagapg2dw62wlwdpv3ugkcjhneiybwmihhjvgvyliuv7p4q._file
Verdict:
unknown
Similar samples:
04a4d40515b77903bb9472b01aaf951f059236999665e847a660ed99d929b78b
njrat
28f39e656758b6c40db049e40bbfe958a7a20a754ea6531ccca3e4fdb8dcc66a
njrat
83fda1582e8aa614098d944606a562589f0880c105ef011b0e8b68bf90354da3
njrat
87c0e0f48bb2599f74c15f8f9e4d3bc96befad82a33de62f89d3bc76d546d8cd
njrat
8f2357461e61502b9c25c60017ff806638e7342479a9ddc46dcfd4eb633d14b4
njrat
9ae3d2baf3c382b46b56e3e50547bd83bd1d6cc85f82aadaf2281a1b404e5fa0
njrat
b3ea819ddfabf3e2060d9f8116e0952654d5bcdb5716f84ad142a6ab979b521a
njrat
c2a645b457a4ba814aa0c116f2a501176531ce29d32a695c45c5022d6aabb271
njrat
c6d93ae492f6a2b687c64cc388cf0a483f44428b843c5b384c156f018a2cf63c
njrat
e2136c8268bb5be4fe2a295a9bb9250c00437452cd3d65822290e3a68b1fb94b
njrat
+ 6 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/200925-97xhqsat2x/
Behaviour
Creates scheduled task(s)
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Adds Run key to start application
Drops startup file
Executes dropped EXE
Unpacked files
SH256 hash:
27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9
MD5 hash:
09318b28ecd23ce09651688c36d407db
SHA1 hash:
d1299521b1153a8cb23cd029ba472ae2e3ed1f19
Link:
https://www.unpac.me/results/f3612995-31eb-4d03-b20f-ba0b923ea2f1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
NJRat
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9

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:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

njrat

Executable exe 27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9

(this sample)

  
Link
https://www.virustotal.com/gui/file/27402b880603cda1dbdab2ec37d774328493b488c06cc41ce9a9ab85a295fbf9/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/65872/

Comments