MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a
SHA3-384 hash: 0490378db78c5c0fd5a4326c4c5e37cad0ba5c0ac0275255f663f31c9c46adba5e7f22d4069d9a91738698e0795154b8
SHA1 hash: b4dc840fe9d6c64e4a82a15146eb7dfcf52bec22
MD5 hash: df972d04760bb93daf4ea5c253d983f9
humanhash: lemon-west-blossom-india
File name:SOSTENER.bat
Download: download sample
File size:13'514 bytes
First seen:2026-04-15 07:32:12 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 384:wsjQbXI9ZFoTqbhne0qGSuEd1yM3thmmt758cjtOM/Fzt3B/uXQTa/f7cRdU:fWajeTDRtbFbjAMth39TaHQRdU
TLSH T1A4520EBEC4D1FCC0875B22D179AAF7C2119ED713BE6B1B6CF5CC05A01A902A4EB79548
Magika batch
Reporter abuse_ch
Tags:bat

Intelligence

File Origin
# of uploads :
1
# of downloads :
37
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
SOSTENER.bat
Verdict:
Malicious activity
Analysis date:
2026-04-15 07:33:03 UTC
Tags:
loader reverseloader susp-powershell evasion
Link:
https://app.any.run/tasks/3e63697e-0fa5-4509-8efc-9a02f692829b

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/61646/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69df3f1af68adfe10039f814
Tags:
ransomware shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Сreating synchronization primitives
Connection attempt to an infection source
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Creating a window
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 base64 obfuscated obfuscated powershell powershell
Link:
https://www.filescan.io/uploads/69df3f0c799d5bf325ff2efb/reports/98d535ff-29ea-4670-af08-1ebc95dcb373/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a
Result
Gathering data
Verdict:
Malicious
File Type:
unix shell
First seen:
2026-04-14T16:30:00Z UTC
Last seen:
2026-04-14T16:51:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a/results?tab=lookup
Result
Threat name:
RDPWrap Tool
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1898492
Signature
.NET source code contains process injector
.NET source code contains very large strings
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Contains functionality to capture screen (.Net source)
Contains functionality to hide user accounts
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Net WebClient Casing Anomalies
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Powershell Decrypt And Execute Base64 Data
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: Suspicious PowerShell IEX Execution Patterns
Suricata IDS alerts for network traffic
Suspicious powershell command line found
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected RDPWrap Tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1898492 Sample: SOSTENER.bat Startdate: 15/04/2026 Architecture: WINDOWS Score: 100 34 oficialrem.duckdns.org 2->34 36 pastefy.app 2->36 38 10 other IPs or domains 2->38 48 Suricata IDS alerts for network traffic 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 56 16 other signatures 2->56 10 cmd.exe 1 2->10         started        signatures3 54 Uses dynamic DNS services 34->54 process4 signatures5 74 Suspicious powershell command line found 10->74 13 powershell.exe 12 10->13         started        16 conhost.exe 10->16         started        process6 signatures7 76 Suspicious powershell command line found 13->76 78 Found suspicious powershell code related to unpacking or dynamic code loading 13->78 18 powershell.exe 14 17 13->18         started        process8 dnsIp9 40 hasteb.in 45.33.64.25, 443, 49693 LINODE-APLinodeLLCUS United States 18->40 42 pastefy.app 104.21.49.12, 443, 49694 CLOUDFLARENETUS United States 18->42 58 Contains functionality to hide user accounts 18->58 60 Writes to foreign memory regions 18->60 62 Injects a PE file into a foreign processes 18->62 22 MSBuild.exe 18->22         started        25 MSBuild.exe 15 2 18->25         started        28 taskkill.exe 1 18->28         started        30 conhost.exe 18->30         started        signatures10 process11 dnsIp12 64 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 22->64 66 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 22->66 68 Contains functionality to register a low level keyboard hook 22->68 44 ip-api.com 208.95.112.1, 49698, 80 TUT-ASUS United States 25->44 46 oficialrem.duckdns.org 181.235.1.253, 2404, 49696 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 25->46 70 Contains functionality to hide user accounts 25->70 72 Installs a global keyboard hook 25->72 32 conhost.exe 28->32         started        signatures13 process14
Score:
85%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a/
Verdict:
Malicious
Threat:
Family.REVERSELOADER
Link:
https://tip.neiki.dev/file/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fa3u664rh5h32kkywv36xpteoanozcgktunsabmejugrz7hyewna._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/260415-jc74rsgx4p/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Looks up external IP address via web service
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
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/28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a

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:CMD_Ping_Localhost
Create hunting rule
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.

Web download

Batch (bat) bat 28374f7b913f4fbd2958b577ebbe64701aec88ca9d1b2005844d0d1cfcf8259a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3787543/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/61646/

Comments