MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f. 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


Threat unknown


Vendor detections: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f
SHA3-384 hash: f6a1b83c016c2589c589bf8c19d318213582eec528a26a7212b50c30c112f9c6da4e8714e583c424b95fe48357233fe2
SHA1 hash: 275578e60f7ff6936d965e7ee654aec2fe18716c
MD5 hash: 1d6bb69d2fd0cc44fb6c1ff15a833dba
humanhash: east-beer-steak-dakota
File name:Kfailin.msi
Download: download sample
File size:44'097'024 bytes
First seen:2026-03-18 15:46:57 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 786432:6YFlMoermdRCmyE+f3AozmNth0eaboRjsL8hjbEA3MYx47yLFeOpeqhf8lqS:6YHdiFmyEGQozo/RjsL8FbEA3MYxSKr2
TLSH T111A73331728FC635E18E147BD869EE0E90747DA7033042D7A3B97D9E1A728C16A7DB42
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter smica83
Tags:msi

Intelligence

File Origin
# of uploads :
1
# of downloads :
48
Origin country :
HU HU
Vendor Threat Intelligence
Gathering data
Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69bac95888c80c01586baa57
Tags:
virus spawn
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug base64 cmd expired-cert fingerprint keylogger lolbin msiexec overlay packed short-lived-cert wix
Link:
https://www.filescan.io/uploads/69bac900493cb7d62d04a54f/reports/8f63268d-873d-42c2-95d2-7e34e5c82f10/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f
Result
Verdict:
UNKNOWN
Link:
https://labs.inquest.net/dfi/sha256/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
File Type:
msi
Detections:
Trojan.Win64.Agentb.sb Trojan.Win32.Shellcode.sb Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Trojan.Win32.Shellcode.ntn
Link:
https://opentip.kaspersky.com/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f/results?tab=lookup
Result
Threat name:
n/a
Detection:
malicious
Classification:
spyw.evad
Score:
62 / 100
Link:
https://www.joesandbox.com/analysis/1885842
Signature
Accesses sensitive object manager directories (likely to detect virtual machines)
Adds a directory exclusion to Windows Defender
AI detected malicious Powershell script
Bypasses PowerShell execution policy
Disable UAC(promptonsecuredesktop)
Disables UAC (registry)
Drops executables to the windows directory (C:\Windows) and starts them
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Modifies the DNS server
Modifies the windows firewall
Multi AV Scanner detection for submitted file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sample is not signed and drops a device driver
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Unusual module load detection (module proxying)
Uses ipconfig to lookup or modify the Windows network settings
Uses netsh to modify the Windows network and firewall settings
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1885842 Sample: Kfailin.msi Startdate: 18/03/2026 Architecture: WINDOWS Score: 62 161 yandex.com 2->161 163 www.yandex.com 2->163 165 7 other IPs or domains 2->165 183 Multi AV Scanner detection for submitted file 2->183 185 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 2->185 187 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 2->187 189 5 other signatures 2->189 12 msiexec.exe 84 38 2->12         started        16 wefault.exe 2->16         started        18 svchost.exe 2->18         started        20 6 other processes 2->20 signatures3 process4 file5 125 C:\Windows\Installer\MSI4981.tmp, PE32+ 12->125 dropped 127 C:\Program Files (x86)\Kfailin\...\fyin.exe, PE32 12->127 dropped 129 C:\Windows\Installer\MSI2648.tmp, PE32 12->129 dropped 137 6 other files (none is malicious) 12->137 dropped 199 Drops executables to the windows directory (C:\Windows) and starts them 12->199 22 msiexec.exe 1 12->22         started        24 MSI4981.tmp 1 12->24         started        26 msiexec.exe 12->26         started        28 wefault.exe 16->28         started        30 drvinst.exe 18->30         started        34 drvinst.exe 18->34         started        131 C:\Users\user\AppData\Local\Temp\MSID85.tmp, PE32 20->131 dropped 133 C:\Users\user\AppData\Local\Temp\MSID26.tmp, PE32 20->133 dropped 135 C:\Users\user\AppData\Local\Temp\MSICE7.tmp, PE32 20->135 dropped 139 7 other files (none is malicious) 20->139 dropped 201 Modifies the DNS server 20->201 36 WerFault.exe 20->36         started        signatures6 process7 file8 38 fyin.exe 10 304 22->38         started        42 xlseqaq.exe 7 13 24->42         started        44 wefault.exe 28->44         started        46 WerFault.exe 28->46         started        145 C:\Windows\System32\...\tap0901.sys (copy), PE32+ 30->145 dropped 147 C:\Windows\System32\drivers\SET4A44.tmp, PE32+ 30->147 dropped 203 Accesses sensitive object manager directories (likely to detect virtual machines) 30->203 149 C:\Windows\System32\...\tap0901.sys (copy), PE32+ 34->149 dropped 151 C:\Windows\System32\...\SET3EEB.tmp, PE32+ 34->151 dropped signatures9 process10 file11 109 C:\Program Files (x86)\...\tap0901.sys, PE32+ 38->109 dropped 111 C:\Program Files (x86)\...\LetsPRO.exe, PE32 38->111 dropped 113 C:\Program Files (x86)\...\LetsPRO.exe.config, XML 38->113 dropped 121 222 other files (none is malicious) 38->121 dropped 195 Sample is not signed and drops a device driver 38->195 48 LetsPRO.exe 38->48         started        50 cmd.exe 38->50         started        53 powershell.exe 38->53         started        61 8 other processes 38->61 115 C:\ProgramData\Python\...\wefault.exe, PE32+ 42->115 dropped 117 C:\ProgramData\Python\wefault.exe, PE32 42->117 dropped 119 C:\ProgramData\Python\...\vcruntime140.dll, PE32+ 42->119 dropped 123 4 other files (none is malicious) 42->123 dropped 55 cmd.exe 42->55         started        57 conhost.exe 42->57         started        197 Adds a directory exclusion to Windows Defender 44->197 59 powershell.exe 44->59         started        signatures12 process13 file14 64 LetsPRO.exe 48->64         started        177 Uses netsh to modify the Windows network and firewall settings 50->177 179 Uses ipconfig to lookup or modify the Windows network settings 50->179 80 2 other processes 50->80 68 conhost.exe 53->68         started        70 wefault.exe 55->70         started        181 Loading BitLocker PowerShell Module 59->181 72 conhost.exe 59->72         started        141 C:\Users\user\AppData\...\tap0901.sys (copy), PE32+ 61->141 dropped 143 C:\Users\user\AppData\Local\...\SET3CA9.tmp, PE32+ 61->143 dropped 74 conhost.exe 61->74         started        76 conhost.exe 61->76         started        78 conhost.exe 61->78         started        82 9 other processes 61->82 signatures15 process16 dnsIp17 153 119.29.29.29, 49726, 53 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 64->153 155 d1dmgcawtbm6l9.cloudfront.net 18.173.242.161, 443, 49731, 49732 MIT-GATEWAYSUS United States 64->155 159 7 other IPs or domains 64->159 167 Loading BitLocker PowerShell Module 64->167 84 WMIC.exe 64->84         started        87 cmd.exe 64->87         started        89 cmd.exe 64->89         started        91 cmd.exe 64->91         started        157 fachuoi.com 43.128.42.125, 6666, 6688 LILLY-ASUS Japan 70->157 169 Bypasses PowerShell execution policy 70->169 171 Adds a directory exclusion to Windows Defender 70->171 173 Disables UAC (registry) 70->173 175 2 other signatures 70->175 93 powershell.exe 70->93         started        signatures18 process19 signatures20 191 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 84->191 95 conhost.exe 84->95         started        97 conhost.exe 87->97         started        99 ipconfig.exe 87->99         started        101 conhost.exe 89->101         started        103 ROUTE.EXE 89->103         started        105 conhost.exe 91->105         started        193 Loading BitLocker PowerShell Module 93->193 107 conhost.exe 93->107         started        process21
Score:
42%
Verdict:
Susipicious
File Type:
ARCHIVE
Link:
https://malprob.io/report/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f
Gathering data
Verdict:
Malicious
Threat:
Trojan.Win32.Shellcode
Link:
https://tip.neiki.dev/file/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f
Threat name:
Win64.Malware.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-03-17 16:11:07 UTC
File Type:
Binary (Archive)
Extracted files:
8343
AV detection:
7 of 24 (29.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4lxyklqax4zbgjln4vlwmduscozegupt336jgnqgrdabpg6odq7q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery persistence privilege_escalation
Link:
https://tria.ge/reports/260318-s792aacx8j/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Enumerates connected drives
Loads dropped DLL
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/e2ef852e00bf3213256de557660e9213b24351f3defc93360688c0179bce1c3f

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_MSI_LATAM_Banker_From_LatAm
Create hunting rule
Rule name:NET
Create hunting rule
Author:malware-lu

File information

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

Comments