MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0
SHA3-384 hash: e0285db53ad9da01b7f1ab8af1b1167d3617ce9d4e13440dcc0c2d0e90207a531597f1fcea2981399b705350831861fa
SHA1 hash: 9ab24a0be7bebfa6daa0bc201ba178ea0531e5c5
MD5 hash: 538e31da94969148af3bd8479943a90b
humanhash: mexico-tennessee-solar-indigo
File name:r6232025ARRIVALNOTICEHBLSCAN_pdf.scr
Download: download sample
Signature njrat
Create hunting rule
File size:76'800 bytes
First seen:2025-06-24 03:31:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:KEOuvEB1793v3vwe+qZTDeUzpNGkrdwTXCZB9i3oN6anxOPz0GwJ3TDCYt/9Qylt:KjZTfMmyUfi3yLDTV5
TLSH T1DE739903F19EC35DDA688AB1303A4270D199EF1B4810AED6F8DAFD3F457A18D1B552E8
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon ecec889ce6d8e8f0 (40 x Formbook, 21 x AgentTesla, 12 x SnakeKeylogger)
Reporter FXOLabs
Tags:exe NjRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
535
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
r6232025ARRIVALNOTICEHBLSCAN_pdf.scr
Verdict:
Malicious activity
Analysis date:
2025-06-24 03:33:52 UTC
Tags:
purecrypter netreactor
Link:
https://app.any.run/tasks/3059a279-32da-44ff-b4ec-f09b883ad89f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/10754/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=685a1cb132ed47a3a8d6a9ae
Tags:
underscore virus micro sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Creating a window
Creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
base64 masquerade obfuscated
Link:
https://www.filescan.io/uploads/685a1cd1f8f8abe4f8b827d9/reports/297f6fab-8c88-4d35-873b-98a18a8fae27/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/bf707238-0555-4b30-91d6-e1c6d7f24540
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1721465
Signature
.NET source code contains potential unpacker
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1721465 Sample: r6232025ARRIVALNOTICEHBLSCA... Startdate: 24/06/2025 Architecture: WINDOWS Score: 96 28 Multi AV Scanner detection for submitted file 2->28 30 Yara detected AntiVM3 2->30 32 .NET source code contains potential unpacker 2->32 34 5 other signatures 2->34 7 r6232025ARRIVALNOTICEHBLSCAN_pdf.scr.exe 15 3 2->7         started        process3 dnsIp4 26 163.5.160.130, 49715, 80 EPITECHFR France 7->26 36 Writes to foreign memory regions 7->36 38 Injects a PE file into a foreign processes 7->38 11 cmd.exe 1 7->11         started        14 InstallUtil.exe 3 7->14         started        16 cmd.exe 1 7->16         started        signatures5 process6 signatures7 40 Uses ipconfig to lookup or modify the Windows network settings 11->40 18 conhost.exe 11->18         started        20 ipconfig.exe 1 11->20         started        42 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 14->42 22 conhost.exe 16->22         started        24 ipconfig.exe 1 16->24         started        process8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) Win 32 Exe x86
Link:
https://app.malva.re/file/538e31da94969148af3bd8479943a90b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0/
Threat name:
ByteCode-MSIL.Trojan.Purelogstealer
Create hunting rule
Status:
Malicious
First seen:
2025-06-24 02:54:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
30 of 38 (78.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rkjmaxghuse6mh26lt4zdk5fuapmk4fovd7kep6akrhd75eoloqa._file
Result
Malware family:
purecrypter
Create hunting rule
Score:
  10/10
Tags:
family:purecrypter discovery downloader loader
Link:
https://tria.ge/reports/250624-d4nxbawpv8/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
PureCrypter
Purecrypter family
Malware Config
C2 Extraction:
http://example.com/api/test
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2c3bc59a-8c84-4621-b29a-465bc788bbec
Unpacked files
SH256 hash:
8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0
MD5 hash:
538e31da94969148af3bd8479943a90b
SHA1 hash:
9ab24a0be7bebfa6daa0bc201ba178ea0531e5c5
Detections:
PureCrypter_Stage1
Create hunting rule
Link:
https://www.unpac.me/results/6bf27be2-2dd3-48ba-959b-76efcf4fb6a5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8a92c05cc7a4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

File information

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

Malspam

njrat

Executable exe 8a92c05cc7a489e61f5e5cf991aba5a01ec570aea8fea23fc0544e3ff48e5ba0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/10754/

Comments