MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156
SHA3-384 hash: c1aa565d00b6ed4df081fdf4604070e8a46f8112e6722fc2eefbb8639432221a206a900325eb06bd33655c84bfe75a34
SHA1 hash: 5f3245ec3534dda85a10f2fd21a2bf4b64ed5eaa
MD5 hash: 63f4f98d6d8d123b77a55dc189e5990b
humanhash: oven-double-sink-alabama
File name:SKMBT_77122024816310TD01_20220128_17311 .vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:698'294 bytes
First seen:2024-09-17 14:01:43 UTC
Last seen:2024-09-23 17:34:10 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:9SSSSSSSSSSSSSSSSSSSSSSSx22222222222222222222222222222222222222I:7LeP6H07x/e
TLSH T122E4CF4766EF5509B1F76B58A97640780B277D299DBDC2AC01CCA45E0FE3A00CA61BF3
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika vba
Reporter abuse_ch
Tags:desckvbrat-com-br RAT RemcosRAT vbs

Intelligence

File Origin
# of uploads :
2
# of downloads :
151
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Script.SNH-gen.32638.22268.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e98be1f72de0d131be93a1
Tags:
Encryption Execution Generic Network Stealth
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
powershell
Link:
https://www.filescan.io/uploads/66e98be0979c2df183856cac/reports/fd867ea3-e8ba-4313-b10c-413076eaa521/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156
Result
Verdict:
UNKNOWN
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1512537
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Connects to many ports of the same IP (likely port scanning)
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates autostart registry keys with suspicious values (likely registry only malware)
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Self deletion via cmd or bat file
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Copy file to startup via Powershell
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Remcos
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to download and execute files (via powershell)
VBScript performs obfuscated calls to suspicious functions
Very long command line found
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 Generic Downloader
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1512537 Sample: SKMBT_77122024816310TD01_20... Startdate: 17/09/2024 Architecture: WINDOWS Score: 100 62 pastebin.com 2->62 64 ftp.desckvbrat.com.br 2->64 66 3 other IPs or domains 2->66 90 Suricata IDS alerts for network traffic 2->90 92 Found malware configuration 2->92 94 Malicious sample detected (through community Yara rule) 2->94 98 15 other signatures 2->98 10 wscript.exe 1 2->10         started        13 cmd.exe 1 2->13         started        15 cmd.exe 2->15         started        signatures3 96 Connects to a pastebin service (likely for C&C) 62->96 process4 signatures5 108 VBScript performs obfuscated calls to suspicious functions 10->108 110 Suspicious powershell command line found 10->110 112 Wscript starts Powershell (via cmd or directly) 10->112 114 3 other signatures 10->114 17 powershell.exe 7 10->17         started        20 powershell.exe 12 13->20         started        22 conhost.exe 13->22         started        24 powershell.exe 15->24         started        26 conhost.exe 15->26         started        process6 signatures7 78 Suspicious powershell command line found 17->78 80 Self deletion via cmd or bat file 17->80 82 Tries to download and execute files (via powershell) 17->82 88 3 other signatures 17->88 28 powershell.exe 14 18 17->28         started        33 conhost.exe 17->33         started        84 Writes to foreign memory regions 20->84 86 Injects a PE file into a foreign processes 20->86 35 RegAsm.exe 20->35         started        37 conhost.exe 20->37         started        39 RegAsm.exe 24->39         started        41 conhost.exe 24->41         started        process8 dnsIp9 72 desckvbrat.com.br 191.252.83.213, 21, 49730, 49731 LocawebServicosdeInternetSABR Brazil 28->72 74 evirtualservicesreviews.com 199.250.212.228, 443, 49737 IMH-WESTUS United States 28->74 76 api.pastecode.io 188.114.96.3, 443, 49732, 49735 CLOUDFLARENETUS European Union 28->76 60 C:\Users\user\AppData\Local\...\qeagf.ps1, Unicode 28->60 dropped 126 Self deletion via cmd or bat file 28->126 43 powershell.exe 11 28->43         started        47 cmd.exe 10 28->47         started        49 powershell.exe 1 11 28->49         started        51 cmd.exe 1 28->51         started        128 Detected Remcos RAT 35->128 file10 signatures11 process12 dnsIp13 70 pastebin.com 172.67.19.24, 443, 51216, 51218 CLOUDFLARENETUS United States 43->70 116 Writes to foreign memory regions 43->116 118 Injects a PE file into a foreign processes 43->118 53 RegAsm.exe 3 3 43->53         started        120 Suspicious powershell command line found 47->120 122 Wscript starts Powershell (via cmd or directly) 47->122 124 Creates autostart registry keys with suspicious values (likely registry only malware) 49->124 signatures14 process15 dnsIp16 68 212.162.149.163, 2404, 51217, 55517 UNREAL-SERVERSUS Netherlands 53->68 58 C:\ProgramData\1210\logs.dat, data 53->58 dropped 100 Contains functionality to bypass UAC (CMSTPLUA) 53->100 102 Detected Remcos RAT 53->102 104 Contains functionalty to change the wallpaper 53->104 106 5 other signatures 53->106 file17 signatures18
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2024-09-17 14:02:07 UTC
File Type:
Text (VBS)
AV detection:
2 of 38 (5.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6wx2akevftbqcba7dqerdyppetsl2uia64zsklqekzaopnwvyfla._file
Verdict:
malicious
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost defense_evasion discovery execution persistence rat
Link:
https://tria.ge/reports/240917-rb5agswfrh/
Behaviour
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
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Command and Scripting Interpreter: PowerShell
Indicator Removal: File Deletion
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Drops startup file
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
212.162.149.163:2404
Dropper Extraction:
https://drive.google.com/uc?export=download&id=
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/f5afa028952cc301041f1c0911e1ef24e4bd5100f733252e045640e7b6d5c156

File information

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

Comments