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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c4889a8f6355fc4172907cf72ec72c102221fcd82ec41be0882a0458b6916a32. 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: 10


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: c4889a8f6355fc4172907cf72ec72c102221fcd82ec41be0882a0458b6916a32
SHA3-384 hash: 8d80b0d02ed614d86fcd41c95bef9bdb10a83aefa77f97d67730c22c70dd4a4d620bf42a1cb59486fc00e0fe6b7566dd
SHA1 hash: 2f6efc6b239ead1b5c5a4a9c87576ccf6f0fb7f5
MD5 hash: 34e651e553f8cedbfc7cbdbf76d7847a
humanhash: spring-romeo-early-maine
File name:ADNOC L63 RENOVATION (RFT # 6000144306) Vendors contract Pre-Bid.vbs
Download: download sample
Signature RemcosRAT
File size:74'594 bytes
First seen:2026-10-26 10:35:48 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:zo3z2Y7ln8vy91I0z+6gkHbgSPqOExbsx5zgl+Azeuu:zczL8vyM0z+6Rbg6qOEsrzgl+eeuu
TLSH T10F737D70EE55061A0E0B2BEAFC991A61C5BC8215022340F5FED9670DA507DECE3FE66D
Magika vba
Reporter threatcat_ch
Tags:RemcosRAT vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
95
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd encrypted lolbin obfuscated
Verdict:
Malicious
File Type:
vbs
First seen:
2026-10-26T00:46:00Z UTC
Last seen:
2026-10-28T08:32:00Z UTC
Hits:
~1000
Result
Threat name:
Remcos, GuLoader
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to steal Internet Explorer form passwords
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell connects to network
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Unusual module load detection (module proxying)
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 reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1991900 Sample: ADNOC L63 RENOVATION (RFT #... Startdate: 26/10/2026 Architecture: WINDOWS Score: 100 70 drive.usercontent.google.com 2->70 72 drive.google.com 2->72 88 Found malware configuration 2->88 90 Malicious sample detected (through community Yara rule) 2->90 92 Multi AV Scanner detection for submitted file 2->92 94 7 other signatures 2->94 11 wscript.exe 1 2->11         started        14 powershell.exe 19 2->14         started        16 powershell.exe 2->16         started        signatures3 process4 signatures5 96 VBScript performs obfuscated calls to suspicious functions 11->96 98 Wscript starts Powershell (via cmd or directly) 11->98 100 Obfuscated command line found 11->100 102 3 other signatures 11->102 18 cmd.exe 1 11->18         started        21 powershell.exe 15 14->21         started        23 conhost.exe 14->23         started        25 powershell.exe 16->25         started        27 conhost.exe 16->27         started        process6 signatures7 80 Wscript starts Powershell (via cmd or directly) 18->80 29 powershell.exe 1 18 18->29         started        33 conhost.exe 18->33         started        35 cmd.exe 1 18->35         started        82 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 21->82 84 Writes to foreign memory regions 21->84 86 Tries to detect Any.run 21->86 37 backgroundTaskHost.exe 21->37         started        39 backgroundTaskHost.exe 21->39         started        41 backgroundTaskHost.exe 25->41         started        43 backgroundTaskHost.exe 25->43         started        process8 dnsIp9 74 drive.google.com 142.251.211.78, 443, 49720, 49722 GOOGLE-GoogleLLCUS United States 29->74 76 drive.usercontent.google.com 142.251.211.97, 443, 49721, 49723 GOOGLE-GoogleLLCUS United States 29->76 104 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 29->104 106 Writes to foreign memory regions 29->106 108 Tries to detect Any.run 29->108 112 4 other signatures 29->112 45 backgroundTaskHost.exe 6 10 29->45         started        50 backgroundTaskHost.exe 29->50         started        110 Detected Remcos RAT 37->110 52 backgroundTaskHost.exe 37->52         started        54 backgroundTaskHost.exe 41->54         started        signatures10 process11 dnsIp12 78 46.183.223.52, 2404, 49725, 49726 RIXHOSTLV Latvia 45->78 64 C:\Users\user\AppData\...\Login Data.tmp, SQLite 45->64 dropped 66 C:\Users\user\AppData\...\Login Data.tmp, SQLite 45->66 dropped 68 C:\Users\user\...\Login Data For Account.tmp, SQLite 45->68 dropped 114 Detected Remcos RAT 45->114 116 Tries to harvest and steal browser information (history, passwords, etc) 45->116 118 Tries to detect Any.run 45->118 56 cmd.exe 1 45->56         started        58 backgroundTaskHost.exe 45->58         started        120 Contains functionality to steal Internet Explorer form passwords 50->120 122 Unusual module load detection (module proxying) 50->122 file13 signatures14 process15 process16 60 conhost.exe 56->60         started        62 reg.exe 1 1 56->62         started       
Verdict:
Malware
YARA:
1 match(es)
Tags:
DeObfuscated Obfuscated SOS: 0.26 T1027 T1059.005 VBS Execute Sub-Script VBScript
Threat name:
Script-WScript.Trojan.GuLoader
Status:
Malicious
First seen:
2026-10-26 07:22:54 UTC
File Type:
Text (VBS)
AV detection:
9 of 24 (37.50%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion discovery execution
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Checks QEMU agent file
Checks computer location settings
Badlisted process makes network request
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

RemcosRAT

Visual Basic Script (vbs) vbs c4889a8f6355fc4172907cf72ec72c102221fcd82ec41be0882a0458b6916a32

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments