MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581. 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: 15


Intelligence 15 IOCs YARA 16 File information Comments
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SHA256 hash: 85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581
SHA3-384 hash: febb519cc906ba0c8301ce4d44df609237a8fb6fbadb87869c57edb345f7df6ef3306ba9fc35bde661d868130f7b8499
SHA1 hash: c0ee8c6ce5863c355364975695241e4d5f8f6da6
MD5 hash: a3816b9541296e5f0f675b0758740aa1
humanhash: carpet-fifteen-black-jig
File name:okblud.exe
Download: download sample
Signature njrat
Create hunting rule
File size:67'072 bytes
First seen:2023-07-25 10:14:26 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:CZfwkvoN36taQviFw1BIGf6BnvbZfLteF3nLrB9z3neaF9bBS9vM:CZfwkvoN36taQviFCBxSBntfWl9zuaFL
Threatray 13 similar samples on MalwareBazaar
TLSH T176634B4877958A15D2BD6E7804F256518730E60B6D03FB2E4CD120FBABB3EC54A42BE7
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 smica83
Tags:exe HUN NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
311
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
okblud.exe
Verdict:
Malicious activity
Analysis date:
2023-07-25 10:15:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/00fb427f-d14d-4a40-8f67-f7fde80a0697

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/432071/
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
Сreating synchronization primitives
Creating a window
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Searching for synchronization primitives
Deleting a recently created file
Restart of the analyzed sample
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
KillMBR.B.Generic
Link:
https://www.hybrid-analysis.com/sample/85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581
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/3b1b209b-e33a-46a6-b1fa-1aa99c0881e3
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1279019
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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
Yara detected Generic Downloader
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1279019 Sample: okblud.exe Startdate: 25/07/2023 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 7 other signatures 2->50 7 okblud.exe 4 4 2->7         started        11 okblud.exe 3 2->11         started        14 okblud.exe 2 2->14         started        16 3 other processes 2->16 process3 dnsIp4 42 127.0.0.1 unknown unknown 7->42 52 Protects its processes via BreakOnTermination flag 7->52 54 Uses schtasks.exe or at.exe to add and modify task schedules 7->54 18 schtasks.exe 1 7->18         started        20 schtasks.exe 1 7->20         started        22 schtasks.exe 1 7->22         started        24 30 other processes 7->24 40 C:\Users\user\AppData\...\okblud.exe.log, ASCII 11->40 dropped file5 signatures6 process7 process8 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        34 conhost.exe 24->34         started        36 conhost.exe 24->36         started        38 27 other processes 24->38
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2023-07-24 21:17:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qxmuwy7sifui3baobuvklatqxe7lagnzba3g42bmohw5km6ymwaq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
0c36cb3433a73f2872d4649dc3be06b15297011b460e878ac4ed5f3263a6a77c
njrat
4f2fb9d8928b5087960d7807d8cb0f2fb2a11291f539e1f18326a7baf0f7e191
njrat
80d1a7af9f74fbbf9a520db1512111161f47676c780bc6db1526fdc9f307ac5f
njrat
868448f6c06d672fd544f64ae73ca4b1fe8403af947b870edd99ff842c02c59d
njrat
d8fe63a4499e084306ef0f303f69f53bbbe9902962ac8c2722f16da521983b55
njrat
e69ad684b9ce869c919a006405130fb0eb918d38ec2372d0fc69372438d62551
njrat
+ 3 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:scammer persistence
Link:
https://tria.ge/reports/230725-l98snsca34/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Adds Run key to start application
Malware Config
C2 Extraction:
127.0.0.1:25565
Unpacked files
SH256 hash:
85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581
MD5 hash:
a3816b9541296e5f0f675b0758740aa1
SHA1 hash:
c0ee8c6ce5863c355364975695241e4d5f8f6da6
Detections:
NjRat
Create hunting rule
win_njrat_w1
Create hunting rule
Link:
https://www.unpac.me/results/097e1cd2-9328-446f-bb06-5bd492ff6e76/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/85d94b63f241/report/overview.html
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/85d94b63f241688d840e0d2aa58270b93eb019b908366e682c71edd533d86581

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/432071/

Comments