MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191. 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: 16


Intelligence 16 IOCs YARA 16 File information Comments
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SHA256 hash: 4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191
SHA3-384 hash: a06e6bf7dbcab551fb633eda8547c347dceddc286d79ee0c23321588f5db38c006f46cd074e3856b109c4c16d7b8658c
SHA1 hash: bd35cd8060032343bc30c61a14f559589758b3b8
MD5 hash: a97418983327443a206654cca8bcfee1
humanhash: south-sweet-four-south
File name:New Client - Copy - Copy (2).exe
Download: download sample
Signature njrat
Create hunting rule
File size:67'072 bytes
First seen:2023-07-14 18:58:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'672 x AgentTesla, 19'489 x Formbook, 12'212 x SnakeKeylogger)
ssdeep 1536:zS10zQoN36tKQviFw14fnqBnvb7fLteF3nLrB9z3neaF9bSS9vM:zS10zQoN36tKQviFC0qBn3fWl9zOaF92
Threatray 12 similar samples on MalwareBazaar
TLSH T136634B4877958A45D2BD2E7844F296518770E50B6D03FB2E48D120FAABB3FC44A42BE7
TrID 48.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
20.5% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.6% (.SCR) Windows screen saver (13097/50/3)
6.9% (.EXE) Win64 Executable (generic) (10523/12/4)
4.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter billthebadboy
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
334
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
sample.zip
Verdict:
Malicious activity
Analysis date:
2023-07-15 10:59:15 UTC
Tags:
njrat
Link:
https://app.any.run/tasks/1bc5d19f-7e44-49c8-a719-e9bc3853e1f9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Njrat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/419661/
Detection(s):
Win.Malware.Ursu-9784017-0
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.Trojan.B-468
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a window
Searching for synchronization primitives
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm bladabindi cmd control evasive eventvwr greyware hacktool keylogger lolbin njrat packed rat replace schtasks winnti wscript
Link:
https://www.filescan.io/uploads/64b1a420066936c946989d1f/reports/d0cf002d-584c-4698-8669-43c5931936aa/overview
Verdict:
Malicious
Labled as:
KillMBR.B.Generic
Link:
https://www.hybrid-analysis.com/sample/4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191
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.
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3a4d6a98-b354-4a13-a8ee-627825470f1a
Result
Threat name:
njRat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1273370
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Detected njRat
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Generic Downloader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2023-07-14 18:59:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j4x3twesrniipfqnpad5rsypf6zkceur6u46d4mde2t3v4hx4giq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
0c36cb3433a73f2872d4649dc3be06b15297011b460e878ac4ed5f3263a6a77c
njrat
80d1a7af9f74fbbf9a520db1512111161f47676c780bc6db1526fdc9f307ac5f
njrat
868448f6c06d672fd544f64ae73ca4b1fe8403af947b870edd99ff842c02c59d
njrat
d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55
njrat
e69ad684b9ce869c919a006405130fb0eb918d38ec2372d0fc69372438d62551
njrat
+ 2 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked
Link:
https://tria.ge/reports/230714-xm276afg63/
Behaviour
Suspicious use of AdjustPrivilegeToken
Malware Config
C2 Extraction:
127.0.0.1:6522
Unpacked files
SH256 hash:
4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191
MD5 hash:
a97418983327443a206654cca8bcfee1
SHA1 hash:
bd35cd8060032343bc30c61a14f559589758b3b8
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/c02b1415-a8a4-4d42-9848-1fd4c86436b9/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4f2fb9d8928b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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 (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:CN_disclosed_20180208_c_RID2E71
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:INDICATOR_SUSPICIOUS_EXE_RawPaste_URL
Create hunting rule
Author:ditekSHen
Description:Detects executables (downlaoders) containing URLs to raw contents of a paste
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:malware_Njrat_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi
Rule name:MAL_njrat
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:MAL_Winnti_Sample_May18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
Rule name:MAL_Winnti_Sample_May18_1_RID3003
Create hunting rule
Author:Florian Roth
Description:Detects malware sample from Burning Umbrella report - Generic Winnti Rule
Reference:https://401trg.pw/burning-umbrella/
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Unknown_Malware_Sample_Jul17_2
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects unknown malware sample with pastebin RAW URL
Reference:https://goo.gl/iqH8CK
Rule name:Unknown_Malware_Sample_Jul17_2_RID326D
Create hunting rule
Author:Florian Roth
Description:Detects unknown malware sample with pastebin RAW URL
Reference:https://goo.gl/iqH8CK
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter <bwall@ballastsecurity.net>
Description:Identify njRat

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/419661/

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