MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2. 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: 18


Intelligence 18 IOCs YARA 12 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2
SHA3-384 hash: 317f1967998256750c9cf789ab88c27917ab107e384c9fcf73b790351121d3cd6e5f30e681546ae4fc21a3fb249a5127
SHA1 hash: 1f0278d90302bd11a53366bdb78fa353b4b1ea58
MD5 hash: beaa68e5cc534b255a5a7f50580fc92a
humanhash: speaker-artist-nevada-beryllium
File name:download.bin
Download: download sample
Signature njrat
Create hunting rule
File size:790'016 bytes
First seen:2025-01-15 21:29:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 332f7ce65ead0adfb3d35147033aabe9 (101 x XRed, 18 x SnakeKeylogger, 9 x DarkComet)
ssdeep 12288:iMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9Us:insJ39LyjbJkQFMhmC+6GD9T
TLSH T1EDF46D22B6D18437D1721A3D8D6BA3A5583ABE512E38754F3BF81E4C9F3E78128152D3
TrID 86.3% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58)
7.4% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
1.8% (.EXE) Win32 Executable Delphi generic (14182/79/4)
1.3% (.EXE) Win64 Executable (generic) (10522/11/4)
1.2% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2)
Magika pebin
dhash icon 9633c3cc2cce2b9a (3 x BlackMoon, 1 x XWorm, 1 x Neshta)
Reporter johnk3r
Tags:backdoor exe lojadasmetas-com-br NjRAT xred

Intelligence

File Origin
# of uploads :
1
# of downloads :
4'160
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
njrat
Create hunting rule
ID:
1
File name:
download.bin
Verdict:
Malicious activity
Analysis date:
2025-01-16 00:38:40 UTC
Tags:
njrat rat bladabindi xred backdoor dyndns
Link:
https://app.any.run/tasks/449f64f3-3c6a-4be5-9eb0-6d6a9fa6f212

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
PUA.Win.Packer.D1s1g-5
Create hunting rule

PUA.Win.Packer.D1s1g-1
Create hunting rule

PUA.Win.Packer.D1s1g-2
Create hunting rule

Win.Trojan.Emotet-9850453-0
Create hunting rule

Win.Trojan.Generic-9936029-0
Create hunting rule

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

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

Win.Trojan.B-468
Create hunting rule

Win.Malware.Delf-6899401-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678879c94487910100df72e6
Tags:
bladabindi delphi njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP GET request
Searching for the window
Сreating synchronization primitives
Creating a window
Searching for synchronization primitives
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Moving a recently created file
Creating a file in the %temp% directory
Moving a file to the %temp% directory
Modifying an executable file
Connection attempt
DNS request
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Infecting executable files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
borland_delphi cmd config-extracted dropper evasive fingerprint hacktool keylogger lolbin macros-on-open masquerade njrat njrat rat remote windows
Link:
https://www.filescan.io/uploads/678828e0a8210c4ace6471e8/reports/fd6e8e78-4eed-49d6-88bc-40d24b649c08/overview
Verdict:
Malicious
Labled as:
Trojan.DarkKomet
Link:
https://www.hybrid-analysis.com/sample/81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0a9a0ca6-7536-4875-a9c3-e5e2df5bcc25
Result
Threat name:
Njrat, XRed
Create hunting rule
Detection:
malicious
Classification:
troj.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1592198
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with functions possibly related to WSH operations (process, registry, environment, or keystrokes)
Drops PE files to the document folder of the user
Found malware configuration
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
Sigma detected: Potentially Suspicious Malware Callback Communication
Suricata IDS alerts for network traffic
Uses dynamic DNS services
Yara detected Generic Downloader
Yara detected Njrat
Yara detected XRed
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1592198 Sample: download.bin.exe Startdate: 15/01/2025 Architecture: WINDOWS Score: 100 42 freedns.afraid.org 2->42 44 xred.mooo.com 2->44 46 6 other IPs or domains 2->46 64 Suricata IDS alerts for network traffic 2->64 66 Found malware configuration 2->66 68 Malicious sample detected (through community Yara rule) 2->68 72 17 other signatures 2->72 8 download.bin.exe 1 6 2->8         started        11 EXCEL.EXE 194 47 2->11         started        13 Synaptics.exe 2->13         started        signatures3 70 Uses dynamic DNS services 42->70 process4 file5 34 C:\Users\user\...\._cache_download.bin.exe, PE32 8->34 dropped 36 C:\ProgramData\Synaptics\Synaptics.exe, PE32 8->36 dropped 38 C:\ProgramData\Synaptics\RCX46B1.tmp, PE32 8->38 dropped 40 C:\...\Synaptics.exe:Zone.Identifier, ASCII 8->40 dropped 15 Synaptics.exe 845 8->15         started        20 ._cache_download.bin.exe 1 2 8->20         started        22 splwow64.exe 11->22         started        process6 dnsIp7 48 docs.google.com 142.250.181.238, 443, 49736, 49737 GOOGLEUS United States 15->48 50 drive.usercontent.google.com 216.58.212.161, 443, 49742, 49744 GOOGLEUS United States 15->50 52 freedns.afraid.org 69.42.215.252, 49740, 80 AWKNET-LLCUS United States 15->52 32 C:\Users\user\Documents\DTBZGIOOSO\~$cache1, PE32 15->32 dropped 56 Antivirus detection for dropped file 15->56 58 Multi AV Scanner detection for dropped file 15->58 60 Drops PE files to the document folder of the user 15->60 24 WerFault.exe 15->24         started        26 WerFault.exe 15->26         started        28 WerFault.exe 15->28         started        30 2 other processes 15->30 54 191.243.161.177, 49730, 49822, 51168 SIMNETTELECOMUNICACOESLTDABR Brazil 20->54 62 Machine Learning detection for dropped file 20->62 file8 signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2
Detection:
njrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2/
Threat name:
Win32.Virus.Napwhich
Create hunting rule
Status:
Malicious
First seen:
2025-01-15 21:30:06 UTC
File Type:
PE (Exe)
Extracted files:
31
AV detection:
35 of 38 (92.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhjxozgojdq7o3i54uhoqmijiel77qrz4kd6icagqao5bo5as7ja._file
Result
Malware family:
xred
Create hunting rule
Score:
  10/10
Tags:
family:njrat family:xred backdoor discovery persistence trojan
Link:
https://tria.ge/reports/250115-1cf4qaxjbm/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Njrat family
Xred
Xred family
njRAT/Bladabindi
Malware Config
C2 Extraction:
xred.mooo.com
Verdict:
Malicious
Tags:
backdoor xred_backdoor rat njrat bladabindi Win.Trojan.Emotet-9850453-0
YARA:
mal_xred_backdoor Windows_Trojan_Njrat_30f3c220 MALWARE_Win_NjRAT
Link:
https://app.threat.zone/submission/552ef3d8-f4e6-4aef-b9ba-f8d8a873d94a
Unpacked files
SH256 hash:
b9eae90f8e942cc4586d31dc484f29079651ad64c49f90d99f86932630c66af2
MD5 hash:
c0ef4d6237d106bf51c8884d57953f92
SHA1 hash:
f1da7ecbbee32878c19e53c7528c8a7a775418eb
Link:
https://www.unpac.me/results/603d9463-ee66-4b94-a05f-a5e36f798691/
SH256 hash:
352a47705d756d7c780b76f5f1e2383ef813ac0162d45aac3ce55c4004d06302
MD5 hash:
ff9f2b483371eff47fabfaa87eb0bd50
SHA1 hash:
666ceb53dfcc726d5ba3d6cae1c522e039ad0d50
Detections:
CN_disclosed_20180208_c
Create hunting rule
MALWARE_Win_NjRAT
Create hunting rule
Link:
https://www.unpac.me/results/603d9463-ee66-4b94-a05f-a5e36f798691/
Parent samples :
81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2
352a47705d756d7c780b76f5f1e2383ef813ac0162d45aac3ce55c4004d06302
SH256 hash:
81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2
MD5 hash:
beaa68e5cc534b255a5a7f50580fc92a
SHA1 hash:
1f0278d90302bd11a53366bdb78fa353b4b1ea58
Link:
https://www.unpac.me/results/603d9463-ee66-4b94-a05f-a5e36f798691/
Malware family:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81d37764ce48/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/81d37764ce48e1f76d1de50ee831094117ffc239e287e40806801dd0bba097d2

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:BobSoftMiniDelphiBoBBobSoft
Create hunting rule
Author:malware-lu
Rule name:Borland
Create hunting rule
Author:malware-lu
Rule name:D1S1Gv11betaD1N
Create hunting rule
Author:malware-lu
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:MALWARE_Win_NjRAT
Create hunting rule
Author:ditekSHen
Description:Detects NjRAT / Bladabindi / NjRAT Golden
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:vbaproject_bin
Create hunting rule
Author:CD_R0M_
Description:{76 62 61 50 72 6f 6a 65 63 74 2e 62 69 6e} is hex for vbaproject.bin. Macros are often used by threat actors. Work in progress - Ran out of time
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Rule name:Windows_Trojan_Njrat_30f3c220
Create hunting rule
Author:Elastic Security

File information

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

  
X
https://x.com/johnk3r/status/1824459740849594377

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIadvapi32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteExA
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CreateProcessA
advapi32.dll::OpenProcessToken
kernel32.dll::OpenProcess
kernel32.dll::CloseHandle
wininet.dll::InternetCloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::TerminateProcess
kernel32.dll::LoadLibraryExA
kernel32.dll::LoadLibraryA
kernel32.dll::GetDriveTypeA
kernel32.dll::GetSystemInfo
kernel32.dll::GetStartupInfoA
WIN_BASE_IO_APICan Create Fileskernel32.dll::CopyFileA
kernel32.dll::CreateDirectoryA
kernel32.dll::CreateFileA
kernel32.dll::CreateFileMappingA
kernel32.dll::DeleteFileA
kernel32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account Informationkernel32.dll::GetComputerNameA
advapi32.dll::GetUserNameA
advapi32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegCreateKeyExA
advapi32.dll::RegNotifyChangeKeyValue
advapi32.dll::RegOpenKeyExA
advapi32.dll::RegQueryValueExA
advapi32.dll::RegSetValueExA
WIN_SVC_APICan Manipulate Windows Servicesadvapi32.dll::OpenSCManagerA
WIN_USER_APIPerforms GUI Actionsuser32.dll::ActivateKeyboardLayout
user32.dll::CreateMenu
user32.dll::FindWindowA
user32.dll::PeekMessageA
user32.dll::CreateWindowExA

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