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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca. 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


RemcosRAT


Vendor detections: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca
SHA3-384 hash: c275cc86044e929e0a2807c3a8cfdda226e1d3ac16061bbc4ba5c4bb2cfa6b9aee9f6ee8c0b434d17f98b806504f84e5
SHA1 hash: 4c764616bfae27566034ee62b7c2f2d4fe27277f
MD5 hash: 480c179d25278968be1632923586f87c
humanhash: connecticut-mockingbird-edward-mirror
File name:IMG-20260804-WA00065-.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:943'626 bytes
First seen:2026-08-05 08:44:12 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:BUYLmoqJWcYvdyHScvjjY0mf6vU47BmxUutz3sYeYg0bHo/B4YHYqFAXfWorYQel:V6
TLSH T1A015CF0E0DED5F1735F7A1F6056A7D92B19C2C321BE33B4318AA9F5880346CAA9756CC
Magika vba
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/78921/
Detection(s):
SecuriteInfo.com.VBS.Starter.505.15086.31405.UNOFFICIAL
Create hunting rule

Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6a72f7f051727110a071a8ca/reports/ab7abe46-a420-453d-9895-7f5df79a55c3/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca
Verdict:
Malicious
File Type:
vbs
First seen:
2026-08-04T10:31:00Z UTC
Last seen:
2026-08-07T06:46:00Z UTC
Hits:
~1000
Detections:
Trojan.VBS.SAgent.sb Trojan.JS.SAgent.sb HEUR:Trojan.Script.Generic HEUR:Trojan-Downloader.Script.Generic
Link:
https://opentip.kaspersky.com/991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca/results?tab=lookup
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1952542
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Internet Explorer form passwords
Contains functionalty to change the wallpaper
Creates processes via WMI
Detected large data written to user environment variables, potentially indicating payload staging for fileless execution
Detected Remcos RAT
Found malware configuration
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
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Unusual module load detection (module proxying)
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 Powershell decode and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1952542 Sample: IMG-20260804-WA00065-.vbs Startdate: 05/08/2026 Architecture: WINDOWS Score: 100 28 pocopaco.co.za 2->28 30 kesmn.com 2->30 32 sweet-snowflake-8a7e.uploadesclintesss.workers.dev 2->32 48 Suricata IDS alerts for network traffic 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 9 other signatures 2->54 8 wscript.exe 1 2->8         started        signatures3 process4 signatures5 56 Wscript starts Powershell (via cmd or directly) 8->56 58 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->58 60 Suspicious execution chain found 8->60 62 2 other signatures 8->62 11 powershell.exe 14 15 8->11         started        process6 dnsIp7 34 pocopaco.co.za 102.218.215.39, 443, 49715 Host-Africa-AS2ZA South Africa 11->34 36 sweet-snowflake-8a7e.uploadesclintesss.workers.dev 172.67.220.236, 443, 49710 CLOUDFLARENET-CloudflareIncUS Canada 11->36 64 Writes to foreign memory regions 11->64 66 Injects a PE file into a foreign processes 11->66 15 calc.exe 4 3 11->15         started        20 conhost.exe 11->20         started        signatures8 process9 dnsIp10 38 kesmn.com 46.151.182.181, 2404, 49720, 49721 GHOSTYNETWORKSUS France 15->38 22 C:\Users\user\AppData\...\Login Data.tmp, SQLite 15->22 dropped 24 C:\Users\user\AppData\...\Login Data.tmp, SQLite 15->24 dropped 26 C:\Users\user\...\Login Data For Account.tmp, SQLite 15->26 dropped 40 System process connects to network (likely due to code injection or exploit) 15->40 42 Contains functionality to bypass UAC (CMSTPLUA) 15->42 44 Detected Remcos RAT 15->44 46 5 other signatures 15->46 file11 signatures12
Score:
92%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca
Verdict:
Malware
YARA:
1 match(es)
Tags:
T1059.005 VBScript Wscript.Shell
Link:
https://app.malva.re/file/480c179d25278968be1632923586f87c
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca/
Threat name:
Script-WScript.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-08-04 14:34:46 UTC
File Type:
Binary
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tenhvvojd7oqwzft25scmzm4fp77yu4rc7gjfmvkbllcz62zx3fa._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery execution rat
Link:
https://tria.ge/reports/260805-kne3sscp7w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: PowerShell
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Badlisted process makes network request
Family: Remcos
Process spawned unexpected child process
Malware Config
C2 Extraction:
kesmn.com:2404
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/991a7ad5c91fdd0b64b3d76426659c2bfffc539117cc92b2aa0ad62cfb59beca

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:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique

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/78921/

Comments