MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33
SHA3-384 hash: c8ea4a80a996299903b45cd87937d693ab49a6a4c85465b42fde074035059d9c0c74cdc42aa63e06ad516ebe701fa45f
SHA1 hash: 1f433446c3a40fa15babcc6d629a8924b55299ad
MD5 hash: 474f92f591dda1b1a9a74e7b7f339894
humanhash: friend-low-winner-pasta
File name:W1rh45g5.exe
Download: download sample
Signature njrat
Create hunting rule
File size:79'872 bytes
First seen:2020-10-14 14:17:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:xt6+6Y9yhU19DppS5wpOk3JCK6pFoRXd6fOpd/9nEh9TGSJAR:WhU19QwpOk5CK6DO/9ESSJA
Threatray 7 similar samples on MalwareBazaar
TLSH 5B733A4877F54A12D1BF0EB5897292220B35FC076D26F76D09D174AA5FB36C08A09FB2
Reporter pmelson
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/70791/
Detection(s):
Win.Trojan.B-468
Create hunting rule

Win.Trojan.Bladabindi-6192388-0
Create hunting rule

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

Win.Trojan.Generic-6454614-0
Create hunting rule

Win.Trojan.Generic-6454615-0
Create hunting rule

Win.Packed.Barys-6880522-0
Create hunting rule

Win.Dropper.njRAT-7436651-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connecting to a non-recommended domain
Using the Windows Management Instrumentation requests
Sending a custom TCP request
Enabling a "Do not show hidden files" option
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/491020
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Changes the view of files in windows explorer (hidden files and folders)
Contains functionality to log keystrokes (.Net Source)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-10-14 14:19:05 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wtkjgit6gnhie353nxf4veiqi6gw6i2znmoa2fa3hdux27mk3yzq._file
Verdict:
malicious
Similar samples:
11edfbb9381d84595491324562ad13b2c218abb38eb97b786e52ab70eb67ce25
njrat
208a8cfdd915e43d58459d4e082efbbf58c649933c09c18c52bc95d34f9725ce
njrat
62e099194f9f946b0c0dd4c474c862dadb605101b87dc2eb7b8e43f6510ae3d1
njrat
bf0452ef3eb6c2e6f2ea84b2bf649a024f6190b0baae26e21c9790820171581f
njrat
c530a21d1704688f69168de95d24fbf2060fdcb4b7afcc0fda9035906a8c565d
njrat
ce66906eb9b0e76d2b0e9b313e84c543412ae3ab598e57dce0b913759946254e
njrat
d9d43f3164fba1aceb44777a7e89de0d62ef5f196ae713effcc8a893eff20e5f
njrat
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/201014-qwtjtfzt8a/
Behaviour
Suspicious use of AdjustPrivilegeToken
Unpacked files
SH256 hash:
b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33
MD5 hash:
474f92f591dda1b1a9a74e7b7f339894
SHA1 hash:
1f433446c3a40fa15babcc6d629a8924b55299ad
Detections:
win_njrat_w1
Create hunting rule
win_njrat_g1
Create hunting rule
Link:
https://www.unpac.me/results/d683a999-bc31-4793-b5b2-ecc14bc71c98/
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/b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33

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:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
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
Rule name:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

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

Web download

njrat

Executable exe b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33

(this sample)

  
Link
https://www.virustotal.com/gui/file/b4d493227e334e826fbb6dcbca9110478d6f23596b1c0d141b38e97d7d8ade33/detection
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/70791/

Comments