MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 859de7f0b61c2ce5e61b9737583fb72a80b0219c13c200a2d0de3e0da7f38307. 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

SHA256 hash: 859de7f0b61c2ce5e61b9737583fb72a80b0219c13c200a2d0de3e0da7f38307
SHA3-384 hash: 37cdce1c7db50fe56ceb8b50ca6a948e600feaa4a8e23bc38aca0878352076becfe4e51b4f137dedb4c46b9367ae0145
SHA1 hash: 4b9639af59854d11b9dc551b673c0d9a81299967
MD5 hash: 02cee4b0848090da95da7b4ccc785fa7
humanhash: juliet-oregon-zebra-victor
File name:31agosto.vbs
Download: download sample
Signature RemcosRAT
File size:5'978'880 bytes
First seen:2025-10-28 07:23:25 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 192:oYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY1YYYYYYYYYYYYYYYYYYYYYYYYa:KVEwFjEwVwdgoLoUmmmmmmmmmmmmmmy
Threatray 346 similar samples on MalwareBazaar
TLSH T1785612BDE1863030EC5ED4A0E79ADA3107CD9364379F5CA91AE6C6B906D250F46BC3D2
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika vba
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
58
Origin country :
SE SE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
94.9%
Tags:
dropper xtreme shell
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 networm obfuscated powershell
Verdict:
Malicious
File Type:
unknown
First seen:
2025-10-27T20:18:00Z UTC
Last seen:
2025-10-29T13:38:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan-Downloader.Script.Generic HEUR:Trojan.Script.Generic
Result
Threat name:
PureLog Stealer
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Bypasses PowerShell execution policy
Connects to a pastebin service (likely for C&C)
Encrypted powershell cmdline option found
Found many strings related to Crypto-Wallets (likely being stolen)
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)
Multi AV Scanner detection for submitted file
Potential dropper URLs found in powershell memory
Queries memory information (via WMI often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, 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: Potential PowerShell Obfuscation Via Reversed Commands
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
Sigma detected: WScript or CScript Dropper - File
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal Bitcoin Wallet information
Uses dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Windows Shell Script Host drops VBS files
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1802988 Sample: 31agosto.vbs Startdate: 28/10/2025 Architecture: WINDOWS Score: 100 39 purerat32.duckdns.org 2->39 41 pastebin.com 2->41 43 2 other IPs or domains 2->43 49 Suricata IDS alerts for network traffic 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for submitted file 2->53 59 13 other signatures 2->59 10 wscript.exe 3 2->10         started        signatures3 55 Uses dynamic DNS services 39->55 57 Connects to a pastebin service (likely for C&C) 41->57 process4 file5 33 C:\Users\...\31agosto.vbs:Zone.Identifier, ASCII 10->33 dropped 35 C:\Users\user\AppData\Local\...\31agosto.vbs, Unicode 10->35 dropped 67 Suspicious powershell command line found 10->67 69 Wscript starts Powershell (via cmd or directly) 10->69 71 Windows Shell Script Host drops VBS files 10->71 73 2 other signatures 10->73 14 powershell.exe 7 10->14         started        signatures6 process7 signatures8 83 Suspicious powershell command line found 14->83 85 Found many strings related to Crypto-Wallets (likely being stolen) 14->85 87 Encrypted powershell cmdline option found 14->87 89 2 other signatures 14->89 17 powershell.exe 14 17 14->17         started        21 conhost.exe 14->21         started        process9 dnsIp10 37 pastebin.com 172.66.171.73, 443, 49687, 49689 CLOUDFLARENETUS United States 17->37 31 C:\Users\user\AppData\Local\Temp\nAvER.ps1, Unicode 17->31 dropped 23 powershell.exe 11 17->23         started        file11 process12 dnsIp13 45 gitlab.com 172.65.251.78, 443, 49692 CLOUDFLARENETUS United States 23->45 61 Writes to foreign memory regions 23->61 63 Potential dropper URLs found in powershell memory 23->63 65 Injects a PE file into a foreign processes 23->65 27 MSBuild.exe 2 2 23->27         started        signatures14 process15 dnsIp16 47 purerat32.duckdns.org 186.169.46.112, 2023, 49695, 49697 COLOMBIATELECOMUNICACIONESSAESPCO Colombia 27->47 75 Queries sensitive physical memory information (via WMI, Win32_PhysicalMemory, often done to detect virtual machines) 27->75 77 Found many strings related to Crypto-Wallets (likely being stolen) 27->77 79 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 27->79 81 4 other signatures 27->81 signatures17
Gathering data
Threat name:
Win32.Trojan.Egairtigado
Status:
Malicious
First seen:
2025-10-28 00:08:33 UTC
File Type:
Binary
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery execution
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Command and Scripting Interpreter: PowerShell
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Badlisted process makes network request
Malware Config
Dropper Extraction:
https://pastebin.com/raw/jgKWLc0S
Please note that we are no longer able to provide a coverage score for Virus Total.

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
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

RemcosRAT

Visual Basic Script (vbs) vbs 859de7f0b61c2ce5e61b9737583fb72a80b0219c13c200a2d0de3e0da7f38307

(this sample)

Comments