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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99abb19b58002ac9bd71b4d097dbcd63d41cc7e7a21e1e5eadac4b4a75acb4fc. 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: 20


Intelligence 20 IOCs YARA File information Comments

SHA256 hash: 99abb19b58002ac9bd71b4d097dbcd63d41cc7e7a21e1e5eadac4b4a75acb4fc
SHA3-384 hash: bc9d0c290c1461f46ce9ca8a147be5a12eede22eb65bdb95ec7a778872ab5e81c876fbd6f8721b4e7bf80e012dfb07b1
SHA1 hash: 4ab8634df00f27ac61276cf5d959cad7cf5b9086
MD5 hash: 048f5b7440b085874c751745877cbaa2
humanhash: oklahoma-florida-berlin-monkey
File name:99abb19b58002ac9bd71b4d097dbcd63d41cc7e7a21e1e5eadac4b4a75acb4fc.exe
Download: download sample
Signature njrat
File size:66'560 bytes
First seen:2026-10-16 00:39:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'287 x AgentTesla, 20'694 x Formbook, 12'401 x SnakeKeylogger)
ssdeep 1536:5HJtlQoN36tOQviFw1cP9+BnvbZfLteF3nLrB9z3nd2aF9bPS9vM:5HJtaoN36tOQviFCowBnlfWl9zMaF9bz
TLSH T10B534B4877558A15D2BD6E7804F2A6518730F50B6D03FB3E48D160EBABB3EC44A42BE7
TrID 54.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
23.1% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
4.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.8% (.EXE) Win64 Executable (generic) (6522/11/2)
3.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter whack_sh
Tags:exe NjRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
200
Origin country :
US US
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-10-16 00:52:59 UTC
Tags:
rat njrat bladabindi auto-reg auto-startup

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
bladabindi autorun njrat
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for synchronization primitives
Creating synchronization primitives
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 bladabindi cmd evasive eventvwr hacktool lolbin mmc njrat njrat obfuscated rat reconnaissance schtasks vbnet wscript
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-04-22T02:12:00Z UTC
Last seen:
2026-10-17T20:16:00Z UTC
Hits:
~10
Result
Threat name:
Detection:
malicious
Classification:
phis.troj.adwa.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to log keystrokes (.Net Source)
Disables zone checking for all users
Drops PE files to the startup folder
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: Drops script at startup location
Sigma detected: Schedule system process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Njrat
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1987827 Sample: Cz9knu0K8T.exe Startdate: 16/10/2026 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for dropped file 2->53 55 12 other signatures 2->55 7 Cz9knu0K8T.exe 4 7 2->7         started        12 Cz9knu0K8T.exe 2 2->12         started        14 Cz9knu0K8T.exe 2 2->14         started        16 2 other processes 2->16 process3 dnsIp4 47 127.0.0.1 unknown unknown 7->47 41 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 7->41 dropped 43 C:\Users\user\AppData\Roaming\...\Client.url, MS 7->43 dropped 45 C:\Users\user\...\Client.exe:Zone.Identifier, ASCII 7->45 dropped 57 Protects its processes via BreakOnTermination flag 7->57 59 Disables zone checking for all users 7->59 61 Drops PE files to the startup folder 7->61 63 Uses schtasks.exe or at.exe to add and modify task schedules 7->63 18 Cz9knu0K8T.exe 5 7->18         started        21 schtasks.exe 1 7->21         started        23 schtasks.exe 1 7->23         started        25 30 other processes 7->25 file5 signatures6 process7 file8 39 C:\Users\user\AppData\...\Cz9knu0K8T.exe.log, ASCII 18->39 dropped 27 conhost.exe 21->27         started        29 conhost.exe 23->29         started        31 conhost.exe 25->31         started        33 conhost.exe 25->33         started        35 conhost.exe 25->35         started        37 23 other processes 25->37 process9
Verdict:
XBinder
YARA:
12 match(es)
Tags:
.Net Crypter Executable Loader Malicious Managed .NET njRat PE (Portable Executable) PE File Layout RAT SOS: 0.28 Win 32 Exe x86 XBinder XBinder Variant XRijMut Loader
Malware Config
C2 Extraction:
CNC: 127.0.0.1
PORT: 6522
Threat name:
ByteCode-MSIL.Backdoor.NjRAT
Status:
Malicious
First seen:
2025-04-21 10:13:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
32 of 36 (88.89%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:njrat botnet:hacked discovery execution persistence privilege_escalation trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Adds Run key to start application
Creates a file in the Startup directory
Executes dropped EXE
Family: njRAT/Bladabindi
Malware Config
C2 Extraction:
127.0.0.1:6522
Unpacked files
SH256 hash:
99abb19b58002ac9bd71b4d097dbcd63d41cc7e7a21e1e5eadac4b4a75acb4fc
MD5 hash:
048f5b7440b085874c751745877cbaa2
SHA1 hash:
4ab8634df00f27ac61276cf5d959cad7cf5b9086
Detections:
NjRat win_njrat_w1 CN_disclosed_20180208_c INDICATOR_SUSPICIOUS_EXE_RawPaste_URL INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer MALWARE_Win_NjRAT MAL_Winnti_Sample_May18_1 Njrat SUSP_NET_Large_Static_Array_In_Small_File_Jan24 Unknown_Malware_Sample_Jul17_2
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

njrat

Executable exe 99abb19b58002ac9bd71b4d097dbcd63d41cc7e7a21e1e5eadac4b4a75acb4fc

(this sample)

  
Delivery method
Distributed via web download

Comments