MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f. 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: 19


Intelligence 19 IOCs YARA 25 File information Comments
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SHA256 hash: 87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f
SHA3-384 hash: 097c6595f31198b447580f7814877b4ef565b2c47fe928898468e937d36a50d53adf9603911a26de1e31865b7a0615c2
SHA1 hash: 946d22547849765d756071f63be3417b30f39c6f
MD5 hash: 8be7cd574b5424c43a6d0ccc4a989412
humanhash: aspen-king-earth-grey
File name:mos ssssttttt.exe
Download: download sample
Signature njrat
Create hunting rule
File size:95'232 bytes
First seen:2024-12-13 11:02:32 UTC
Last seen:2025-02-05 08:00:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'854 x AgentTesla, 19'783 x Formbook, 12'304 x SnakeKeylogger)
ssdeep 1536:lIEQIBlfGQFk2ZonmzlMxjEwzGi1dD1DYgS:lICtFk2ZonmZMOi1dxB
Threatray 483 similar samples on MalwareBazaar
TLSH T1D493E85977E56524E0BF5AF79471F2000F74B54B1602E39D89F218AA0A33AC44F89FEB
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter lontze7
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
15
# of downloads :
423
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
dcrat
Create hunting rule
ID:
1
File name:
4363463463464363463463463.exe
Verdict:
Malicious activity
Analysis date:
2024-11-16 20:17:38 UTC
Tags:
loader hausbomber dcrat opendir phorpiex github evasion payload remote xworm amadey autoit pastebin lumma stealer redline arch-scr telegram vidar smokeloader stealc rust netreactor
Link:
https://app.any.run/tasks/1154abe0-6d24-4b02-841f-395753a8e3d6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Generic-9795615-0
Create hunting rule

Win.Dropper.njRAT-10015886-0
Create hunting rule

Win.Dropper.Nanocore-10030076-0
Create hunting rule

Win.Trojan.Generic-6417450-0
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Win.Trojan.B-468
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Win.Trojan.Ratenjay-1
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Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=675c15f589dbe2162350ab23
Tags:
bladabindi autorun njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file in the %AppData% directory
Creating a process with a hidden window
Enabling the 'hidden' option for analyzed file
Launching the process to change network settings
Creating a file in the %temp% directory
Launching a process
Searching for synchronization primitives
Connection attempt
Launching the process to change the firewall settings
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm bladabindi cmd evasive explorer fingerprint fingerprint keylogger lolbin msconfig netsh njrat rat rundll32 schtasks update vbnet windows winnti
Link:
https://www.filescan.io/uploads/675c146c89dd5131f5203a0a/reports/d6c4a963-ac0e-4684-a8e5-0dd3b4e45191/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt.Generic
Link:
https://www.hybrid-analysis.com/sample/87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f
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/c348f1f0-444c-440a-a81e-a5856f237b2a
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
spre.phis.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1574579
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to disable the Task Manager (.Net Source)
Contains functionality to spread to USB devices (.Net source)
Disables zone checking for all users
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses netsh to modify the Windows network and firewall settings
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: 1574579 Sample: mos ssssttttt.exe Startdate: 13/12/2024 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus / Scanner detection for submitted sample 2->42 44 10 other signatures 2->44 7 StUpdate.exe 2->7         started        10 mos ssssttttt.exe 1 7 2->10         started        14 StUpdate.exe 2->14         started        16 3 other processes 2->16 process3 dnsIp4 46 Antivirus detection for dropped file 7->46 48 Multi AV Scanner detection for dropped file 7->48 50 Machine Learning detection for dropped file 7->50 36 127.0.0.1 unknown unknown 10->36 34 C:\Users\user\AppData\Local\...\StUpdate.exe, PE32 10->34 dropped 52 Disables zone checking for all users 10->52 18 netsh.exe 2 10->18         started        20 netsh.exe 2 10->20         started        22 netsh.exe 2 10->22         started        24 schtasks.exe 1 10->24         started        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       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f/
Threat name:
ByteCode-MSIL.Backdoor.njRAT
Create hunting rule
Status:
Malicious
First seen:
2023-05-13 16:36:35 UTC
File Type:
PE (.Net Exe)
AV detection:
33 of 38 (86.84%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q6sa2luoxybt746tleyj3wqtn4n45vofk6gi5j6qloozpznnwexq._file
Verdict:
malicious
Label(s):
njrat
Create hunting rule
Similar samples:
06b314e6e7127b58bdafcd05252a28af38233afe2b188584eb4d27ab372c8762
njrat
4f3b8d1cfa5d84f0eaa63da7af72f0f8d844d2130bdd5324b97d508985bf8748
njrat
8f9a0a3430662a0c54deb0394287b0555c6963edcb9b0c8cb0f87962f17d0e87
njrat
a406d9895911ac26f41f77b6280e09409ea084a1d130cdc7f766528e8335dd01
njrat
ab6b0c8a2fd898517ff036b9fc94ce581febdab5a69433f491fb70bc55ee1833
njrat
c471b2d1d86cac31a117363ed55a71714aeec937f9a73977d2f2329914252f97
njrat
+ 473 additional samples on MalwareBazaar
Result
Malware family:
njrat
Create hunting rule
Score:
  10/10
Tags:
family:njrat botnet:hacked discovery evasion persistence privilege_escalation trojan
Link:
https://tria.ge/reports/241213-m5pdxawmhx/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Executes dropped EXE
Loads dropped DLL
Modifies Windows Firewall
Njrat family
njRAT/Bladabindi
Malware Config
C2 Extraction:
hakim32.ddns.net:2000
127.0.0.1:444
Verdict:
Malicious
Tags:
rat njrat Win.Packed.Generic-9795615-0
YARA:
malware_Njrat_strings win_njrat_strings_oct_2023 Windows_Trojan_Njrat_30f3c220 Windows_Trojan_Njrat_eb2698d2 MAL_Njrat MALWARE_Win_NjRAT JPCERTCC_Njrat
Link:
https://app.threat.zone/submission/a02559da-41d8-4a8f-a00e-1c1fcb0947ab
Unpacked files
SH256 hash:
87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f
MD5 hash:
8be7cd574b5424c43a6d0ccc4a989412
SHA1 hash:
946d22547849765d756071f63be3417b30f39c6f
Link:
https://www.unpac.me/results/1e6c3c19-8e70-48dd-a9a2-eb023eb8a8dc/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/87a40d2e8ebe/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/87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f

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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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 / NjRAT Golden
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:Mal_WIN_NjRAT_RAT_PE
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect NjRAT implant.
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Create hunting rule
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:Skystars_LightDefender_Njrat_Rule
Create hunting rule
Author:Skystars LightDefender
Description:Detects Njrat
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_netsh_firewall_command
Create hunting rule
Author:SECUINFRA Falcon Team
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Njrat_eb2698d2
Create hunting rule
Author:Elastic Security
Rule name:win_njrat_strings_oct_2023
Create hunting rule
Author:Matthew @ Embee_Research

File information

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

Web download

njrat

Executable exe 87a40d2e8ebe033ff3d359309dda136f1bced5c5578c8ea7d05b9d97e5adb12f

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3238022/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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