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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630
SHA3-384 hash: 986fe1bf102a7d047c1aa42b4b02f6691970ec046fc98b944bc925ba4bb6f9c62e57d439eaf262115a5caa10320201a1
SHA1 hash: 0af63fb61780c36845a4908221a2cb61c2cc482d
MD5 hash: ac09984fdf02140bba9412a89ae60c68
humanhash: eight-london-social-kilo
File name:SolaraBoostraper.exe
Download: download sample
Signature njrat
Create hunting rule
File size:7'070'720 bytes
First seen:2025-07-28 11:31:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'239 x AgentTesla, 20'489 x Formbook, 12'372 x SnakeKeylogger)
ssdeep 196608:qvfmnZJitBL+C42oudfmQgKdsL1zhMtvMPjSWXHav:fZmbzkJh6vM2WXHa
TLSH T16966113D071237FAA1D010698A67C0538EBCB476701E9FDA6DB4206E69E33DF6217693
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 f0e2c1f4f0e972c7 (2 x njrat, 1 x CoinMiner, 1 x ExelaStealer)
Reporter burger
Tags:exe NjRAT xworm

Intelligence

File Origin
# of uploads :
1
# of downloads :
154
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SolaraBoostraper.exe
Verdict:
Malicious activity
Analysis date:
2025-07-28 11:27:26 UTC
Tags:
evasion auto-startup auto-reg xworm
Link:
https://app.any.run/tasks/92f7bd49-cfac-4bfa-ae8d-18686fe76610

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/17349/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68875fa00b4775fb2132a25e
Tags:
asyncrat virus micro remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file
Creating a process from a recently created file
Creating a window
Searching for synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a process with a hidden window
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68875f8d13488cfd44dbe26b/reports/7e2b1053-a7ac-427c-84fa-ea853a395f98/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e9cc543d-19ba-487a-a61e-6ea22db3d9c9
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1745491
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Loading BitLocker PowerShell Module
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
Sample uses string decryption to hide its real strings
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Schedule system process
Sigma detected: System File Execution Location Anomaly
Suricata IDS alerts for network traffic
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 Costura Assembly Loader
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1745491 Sample: SolaraBoostraper.exe Startdate: 28/07/2025 Architecture: WINDOWS Score: 100 53 Mareczek123-27222.portmap.host 2->53 55 ip-api.com 2->55 61 Suricata IDS alerts for network traffic 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 14 other signatures 2->67 9 SolaraBoostraper.exe 4 2->9         started        13 RuntimeBroker 2->13         started        15 RuntimeBroker 2->15         started        17 2 other processes 2->17 signatures3 process4 file5 47 C:\ProgramData\RuntimeBroker.exe, PE32 9->47 dropped 49 C:\ProgramData\BootstrapperNew.exe, PE32+ 9->49 dropped 51 C:\Users\user\...\SolaraBoostraper.exe.log, CSV 9->51 dropped 77 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 9->77 19 RuntimeBroker.exe 1 6 9->19         started        24 BootstrapperNew.exe 17 9->24         started        79 Antivirus detection for dropped file 13->79 81 Multi AV Scanner detection for dropped file 13->81 signatures6 process7 dnsIp8 57 Mareczek123-27222.portmap.host 193.161.193.99, 27222, 49695, 49696 BITREE-ASRU Russian Federation 19->57 59 ip-api.com 208.95.112.1, 49691, 80 TUT-ASUS United States 19->59 45 C:\ProgramData\RuntimeBroker, PE32 19->45 dropped 69 Antivirus detection for dropped file 19->69 71 Multi AV Scanner detection for dropped file 19->71 73 Protects its processes via BreakOnTermination flag 19->73 75 4 other signatures 19->75 26 powershell.exe 23 19->26         started        29 powershell.exe 23 19->29         started        31 powershell.exe 19->31         started        33 2 other processes 19->33 file9 signatures10 process11 signatures12 83 Loading BitLocker PowerShell Module 26->83 35 conhost.exe 26->35         started        37 conhost.exe 29->37         started        39 conhost.exe 31->39         started        41 conhost.exe 33->41         started        43 conhost.exe 33->43         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PE (Portable Executable) SOS: 0.87 Win 32 Exe x86
Link:
https://app.malva.re/file/ac09984fdf02140bba9412a89ae60c68
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630/
Verdict:
Malicious
Threat:
Backdoor.MSIL.XWorm
Link:
https://tip.neiki.dev/file/f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-07-28 11:27:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6npnnnds54vegzgylo5ka23wtsnajneiqims3wduo5nvms6s2yya._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
Similar samples:
error
njrat
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm rat trojan
Link:
https://tria.ge/reports/250728-nmw7gaxrt7/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Detect Xworm Payload
Xworm
Xworm family
Malware Config
C2 Extraction:
Mareczek123-27222.portmap.host:27222
Verdict:
Malicious
Tags:
External_IP_Lookup
YARA:
n/a
Link:
https://app.threat.zone/submission/9b54c6ae-b1ba-4f48-8df3-edb214e0345c
Unpacked files
SH256 hash:
f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630
MD5 hash:
ac09984fdf02140bba9412a89ae60c68
SHA1 hash:
0af63fb61780c36845a4908221a2cb61c2cc482d
Link:
https://www.unpac.me/results/15e60b8e-0486-4053-b90c-ab83cc7efe39/
SH256 hash:
c2c512f75b1dd87df19c5de7e51865c9412fb24181b01be014578db42ffe0bc9
MD5 hash:
a40b0b4bcb52ff22b3bc301d970f4aaf
SHA1 hash:
6e3fa870fde135de99b87aaee7ae6119062d6086
Detections:
win_xworm_w0
Create hunting rule
win_xworm_bytestring
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
MALWARE_Win_XWorm
Create hunting rule
Link:
https://www.unpac.me/results/15e60b8e-0486-4053-b90c-ab83cc7efe39/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f35ed6b472ef/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/f35ed6b472ef2a4364d85bbaa06b769c9a04b48882192dd874775b564bd2d630

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: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_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/17349/

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

Comments