MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794
SHA3-384 hash: 5a113ad74b1e78ab9addd8c73d1027e1a9580be6b7e55fd621bae3798c4948871f9b5a40cf2f31f936be1e40911a2969
SHA1 hash: d3e028b2a9928b24c16174831188598d9c76b576
MD5 hash: 46073266e8379b75b8232d78bc3c358c
humanhash: gee-harry-nebraska-india
File name:PO-OT0921023_xlxs.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:375'800 bytes
First seen:2023-09-22 07:42:31 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 6144:Vfffff8fffffafffffEfffffjfffffcVrRfffff+6fffffrfffffafffffOffff+:Vfffff8fffffafffffEfffffjfffffcc
Threatray 2'678 similar samples on MalwareBazaar
TLSH T113840F1014EE94CDF2B37F232BEEBAE54F6BF7F15626919C250043075619D88CE99A32
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter abuse_ch
Tags:RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
117
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/450577/
Detection(s):
SecuriteInfo.com.HEUR.Trojan.Script.Generic.7654.5761.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/650d458883a0c6425dfc2a9e/reports/6afa9cd3-dbf4-4a20-801f-01a6d4bcff43/overview
Verdict:
Malicious
Labled as:
VBS/Downloader.acx
Link:
https://www.hybrid-analysis.com/sample/a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1312808
Signature
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to modify clipboard data
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Drops VBS files to the startup folder
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Powershell download and load assembly
Sigma detected: Remcos
Suspicious powershell command line found
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
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 Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1312808 Sample: PO-OT0921023_xlxs.vbs Startdate: 22/09/2023 Architecture: WINDOWS Score: 100 63 Multi AV Scanner detection for domain / URL 2->63 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 9 other signatures 2->69 8 wscript.exe 1 2->8         started        11 wscript.exe 1 2->11         started        process3 signatures4 79 VBScript performs obfuscated calls to suspicious functions 8->79 81 Suspicious powershell command line found 8->81 83 Wscript starts Powershell (via cmd or directly) 8->83 87 2 other signatures 8->87 13 powershell.exe 7 8->13         started        16 cmd.exe 1 8->16         started        85 Very long command line found 11->85 18 powershell.exe 11->18         started        20 cmd.exe 1 11->20         started        process5 signatures6 103 Suspicious powershell command line found 13->103 22 powershell.exe 14 15 13->22         started        38 2 other processes 13->38 105 Wscript starts Powershell (via cmd or directly) 16->105 107 Uses ping.exe to sleep 16->107 109 Uses ping.exe to check the status of other devices and networks 16->109 26 cmd.exe 1 16->26         started        28 conhost.exe 16->28         started        30 PING.EXE 1 16->30         started        32 powershell.exe 18->32         started        34 conhost.exe 18->34         started        36 cmd.exe 1 20->36         started        40 2 other processes 20->40 process7 dnsIp8 55 uploaddeimagens.com.br 172.67.215.45, 443, 49719, 49729 CLOUDFLARENETUS United States 22->55 57 dolowack.webd.pro 194.181.228.25, 49720, 49731, 80 NASK-COMMERCIALPL Poland 22->57 71 Writes to foreign memory regions 22->71 73 Injects a PE file into a foreign processes 22->73 42 RegAsm.exe 3 22->42         started        75 Wscript starts Powershell (via cmd or directly) 26->75 46 powershell.exe 9 26->46         started        77 Uses ping.exe to sleep 28->77 59 127.0.0.1 unknown unknown 30->59 49 RegAsm.exe 32->49         started        51 powershell.exe 9 36->51         started        signatures9 process10 dnsIp11 61 193.142.59.6, 49721, 49723, 49728 HOSTSLICK-GERMANYNL Netherlands 42->61 89 Contains functionality to bypass UAC (CMSTPLUA) 42->89 91 Contains functionalty to change the wallpaper 42->91 93 Contains functionality to steal Chrome passwords or cookies 42->93 101 3 other signatures 42->101 53 C:\Users\user\AppData\...\JRqBUUBDUCOPAa.vbs, Unicode 46->53 dropped 95 Suspicious powershell command line found 46->95 97 Drops VBS files to the startup folder 46->97 99 Found suspicious powershell code related to unpacking or dynamic code loading 46->99 file12 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794/
Threat name:
Script-WScript.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2023-09-21 19:22:34 UTC
File Type:
Text (VBS)
AV detection:
2 of 24 (8.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uwxflappkla7dolkgqkjgf6a5wn7wznnhcuej22jhsyqxnvzg6ka._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
44f16731945747ba1d56147e3845765d533e81d95b002509182b7db53a71a673
RemcosRAT
50360abbc508d169cda7d1a79ad2032827b553f0b9ed82c7b1609d074c20a112
RemcosRAT
6d69abf704c0ac0c71d7d35cc0eaa5b0ba230b7538ee159ad415b06798143c33
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81e133f9aae32be3ff7a818fe7fa37eea017740c139e825641cf50dfaaa2a0a9
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a8c7f79f118f3ff57bef79b5877355adab4269c99a6c61dfca429a46ff0fb357
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b09ad34d756d9477b24bca1cb4dfcc95e21aa67f72817560dba0d9042255bdca
RemcosRAT
d1e1c9332fa8a6bd045fd4ccfa11055a4e17d1cad72239aab2400870191c4185
RemcosRAT
d31044022de445b61ba735083a47c5fd1f4d5c8dfcf544da489572ce3fafdc79
RemcosRAT
f5d707c704a60d1578d0b00f656477eda9b5dbfa440466660bfd92aff363625d
RemcosRAT
+ 2'668 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/230922-jj9aeaee9v/
Behaviour
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Drops startup file
Blocklisted process makes network request
Malware Config
Dropper Extraction:
https://uploaddeimagens.com.br/images/004/614/895/original/rump_vbs.jpg?1695246171
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a5ae5581ef52/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Remcos
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794

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 a5ae5581ef52c1f1b96a34149317c0ed9bfb65ad38a844eb493cb10bb6b93794

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/450577/

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