MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297. 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


AsyncRAT


Vendor detections: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297
SHA3-384 hash: 1da8a2636cb984d2612bfcbcc201e4edd11828868f0ec029cd0dbc5a69af68575ca1ea88b301e60c860adf2027149c86
SHA1 hash: 1469cefc05fc5a7eeb36b0d874de43605b5d33a5
MD5 hash: ac7f6462ff676a95918074ffff01069a
humanhash: earth-salami-march-earth
File name:sostener.vbs
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:508'068 bytes
First seen:2025-09-30 15:17:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 384:Gmmmlmmmlmmm2gm8eM8mmmSmmmSmmmSmmmSmmmSmmmSmmmSmmm1mmmSmmmSmmmSm:uuG
Threatray 1'606 similar samples on MalwareBazaar
TLSH T1B9B48E0BCEA532267D3A07E9106555D5AA6D7B932B322893C3C30C897B4C5734EDEE4E
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika txt
Reporter abuse_ch
Tags:AsyncRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
57
Origin country :
SE SE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/29592/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68dbf4ce40b7da0b4eb8d907
Tags:
obfuscate asyncrat xtreme shell
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 obfuscated powershell
Link:
https://www.filescan.io/uploads/68dbf4c9ecfabf8ba43f1fea/reports/075a09e6-4f41-4181-9f72-70a41c10d4aa/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297
Verdict:
Malicious
File Type:
vbs
First seen:
2025-09-29T20:39:00Z UTC
Last seen:
2025-09-29T20:39:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297/results?tab=lookup
Result
Threat name:
AsyncRAT, Dacic, DcRat
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1786718
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AsyncRAT
Yara detected Dacic
Yara detected DcRat
Yara detected Generic Downloader
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1786718 Sample: sostener.vbs Startdate: 30/09/2025 Architecture: WINDOWS Score: 100 30 medellin2027.duckdns.org 2->30 32 ucfa636dfa82d529ced10280bee5.dl.dropboxusercontent.com 2->32 34 9 other IPs or domains 2->34 42 Suricata IDS alerts for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 50 18 other signatures 2->50 10 wscript.exe 1 2->10         started        signatures3 48 Uses dynamic DNS services 30->48 process4 signatures5 60 VBScript performs obfuscated calls to suspicious functions 10->60 62 Suspicious powershell command line found 10->62 64 Wscript starts Powershell (via cmd or directly) 10->64 66 2 other signatures 10->66 13 powershell.exe 7 10->13         started        process6 signatures7 68 Suspicious powershell command line found 13->68 70 Encrypted powershell cmdline option found 13->70 72 Bypasses PowerShell execution policy 13->72 74 Found suspicious powershell code related to unpacking or dynamic code loading 13->74 16 powershell.exe 14 17 13->16         started        19 conhost.exe 13->19         started        process8 file9 28 C:\Users\user\AppData\Local\Temp\DvVbs.ps1, Unicode 16->28 dropped 21 powershell.exe 11 16->21         started        process10 dnsIp11 36 edge-block-www-env.dropbox-dns.com 162.125.5.15, 443, 49696 DROPBOXUS United States 21->36 38 www-env.dropbox-dns.com 162.125.5.18, 443, 49695 DROPBOXUS United States 21->38 52 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 21->52 54 Writes to foreign memory regions 21->54 56 Potential dropper URLs found in powershell memory 21->56 58 Injects a PE file into a foreign processes 21->58 25 MSBuild.exe 1 2 21->25         started        signatures12 process13 dnsIp14 40 medellin2027.duckdns.org 94.154.35.114, 1111, 49697 SELECTELRU Ukraine 25->40
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297
Gathering data
Detection:
dcrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297/
Verdict:
Malicious
Threat:
Family.ASYNCRAT
Link:
https://tip.neiki.dev/file/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297
Threat name:
Script-WScript.Backdoor.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-09-29 17:14:28 UTC
File Type:
Text (VBS)
AV detection:
9 of 37 (24.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54hqr3enq5fxe7nke5w5gajl3ovbpu6gipoywpx3udrefzyowklq._file
Verdict:
malicious
Label(s):
dcrat
Create hunting rule
Similar samples:
270f45d4dadced58852636cd091aa5ba0ca1e54f412ac17d8e807b2e1db1de5c
AsyncRAT
62e65ddf448f62409bf2b252a1dda1c300de21fb0fff06ab07903360f301c1b5
AsyncRAT
8241aace260f291c8b39eb96c220a6ef7603cd6fb09a0767f16fb218c34a7840
AsyncRAT
c1129d126820d0b83ec14389944fd8a7ade95e6a980245d37b904623183ddbf1
AsyncRAT
cf668403c5a5d408a2c655ea78f0cd85a9fdd02874fbe62ded2c63c60b9352d8
AsyncRAT
d7c2934b23d03ce5bd00a576024299eb70e3f60f5dab8bf65c1f7aacf419df9f
AsyncRAT
dd351746a9cb17a99e8bd6724cc75a1727dfad4070fcd21ebf2da478e282fd89
AsyncRAT
error
AsyncRAT
fed260507508e3c24632800ee2cd39e9c401cf6f84ebe3467979857cec2dfe9c
AsyncRAT
+ 1'596 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:medellin discovery execution rat
Link:
https://tria.ge/reports/250930-sptxcahq9w/
Behaviour
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
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Badlisted process makes network request
AsyncRat
Asyncrat family
Malware Config
C2 Extraction:
medellin2027.duckdns.org:1111
Dropper Extraction:
https://firebasestorage.googleapis.com/v0/b/loloer3434.firebasestorage.app/o/CIFRADO%20FFF3333%2Fdllsky%20(1).txt?alt=media&token=534a43d1-25fa-4b07-9351-33997cb48df4
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/ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297

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: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

AsyncRAT

Visual Basic Script (vbs) vbs ef0f08ec8d874b727daa276dd3012bdbaa17d3c643dd8b3efba0e242e70eb297

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3509094/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3633563/
Cape
Cape
https://www.capesandbox.com/analysis/29592/

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