MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 acfa4ca29c04cfea8bd6e44b4fc4a85905505c41ef01dd8935e6e74db2b88ec6. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: acfa4ca29c04cfea8bd6e44b4fc4a85905505c41ef01dd8935e6e74db2b88ec6
SHA3-384 hash: bf13b48018ddb2fad3ba9337edbc924ada7781127da5aea092d12ca4d4f0116ffb4c93b06e5d7a45eadcde8743cd2e04
SHA1 hash: a3c4c9d1b85a254a100248c732bde20949eeb820
MD5 hash: 0aef2f04c8bb18c1006fe7a479e96767
humanhash: angel-mexico-west-eight
File name:58707841680985814280528172314287786128764038941288.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:249'464 bytes
First seen:2023-01-24 08:14:20 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 192:Irhrhrhrhrhrz+rhrhrhrhrhr1rhrhrhrhrhrFrhrhrhrhrhrDrhrhrhrhrhrkrS:oQ
Threatray 2'533 similar samples on MalwareBazaar
TLSH T1E334C25074B6245485D3BA474EE3F2A90BBFBAD260362D3921CD5B92ABCE501CE473F1
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Reporter abuse_ch
Tags:RAT RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
120
Origin country :
n/a
Vendor Threat Intelligence
Detection:
DLAgent09 Downloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/356287/
Detection(s):
SecuriteInfo.com.Script.SNH-gen.28961.26573.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.VBS.Heur.Honolulu.5.567971BD.Gen.9569.6957.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/63cf938689bd67c10fd9adf2/reports/45ccd49d-354d-4545-87d3-cf5ad5bc38d3/overview
Result
Verdict:
MALICIOUS
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1157707
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an autostart registry key pointing to binary in C:\Windows
Creates autostart registry keys with suspicious values (likely registry only malware)
Delayed program exit found
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Sigma detected: Remcos
Snort IDS alert for network traffic
Suspicious powershell command line found
Uses dynamic DNS services
VBScript performs obfuscated calls to suspicious functions
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Generic Downloader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 790444 Sample: 587078416809858142805281723... Startdate: 24/01/2023 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic 2->37 39 Multi AV Scanner detection for domain / URL 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 6 other signatures 2->43 8 wscript.exe 1 2->8         started        process3 signatures4 45 VBScript performs obfuscated calls to suspicious functions 8->45 47 Suspicious powershell command line found 8->47 49 Wscript starts Powershell (via cmd or directly) 8->49 11 powershell.exe 15 16 8->11         started        process5 dnsIp6 25 172.174.176.153, 49700, 80 ATT-INTERNET4US United States 11->25 51 Suspicious powershell command line found 11->51 53 Creates autostart registry keys with suspicious values (likely registry only malware) 11->53 55 Creates an autostart registry key pointing to binary in C:\Windows 11->55 57 2 other signatures 11->57 15 RegAsm.exe 2 3 11->15         started        19 powershell.exe 12 11->19         started        21 conhost.exe 11->21         started        signatures7 process8 dnsIp9 27 aneurinbarnard.duckdns.org 51.161.104.189, 23101 OVHFR Canada 15->27 29 Contains functionality to steal Chrome passwords or cookies 15->29 31 Contains functionality to steal Firefox passwords or cookies 15->31 33 Installs a global keyboard hook 15->33 35 Delayed program exit found 15->35 23 conhost.exe 19->23         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/acfa4ca29c04cfea8bd6e44b4fc4a85905505c41ef01dd8935e6e74db2b88ec6/
Gathering data
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vt5eziu4ath6vc6w4rfu7rfilecvaxcb54a53cjv43tu3mvyr3da._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
0e1b5e7257b490e22a966862602dee637a6a192f55527137d6c3a94bc9dc34ca
RemcosRAT
1ad7a11b90fe0a21efb62ed36e1e9b1de9071cd6e73a59caca933aa81ea54d94
RemcosRAT
56661b9e180b6ee75e933cb57222552d55bfb59f4b408feea3b51ee9bcf2bc93
RemcosRAT
6e7342a71d1839f461df4027f3e01bdc607bf16605900d41167631805b598d8c
RemcosRAT
aa6a12febef7559e930436965c1df266091fd66c3b918f220a67c96b60c37d03
RemcosRAT
e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0
RemcosRAT
f7f8d1ebfed3afd13eb47392a7f502603ecb970a817c221682cd8f2a17ff2bb3
RemcosRAT
+ 2'523 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:assigneds persistence rat
Link:
https://tria.ge/reports/230124-j5jlwaab92/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
aneurinbarnard.duckdns.org:23101
Dropper Extraction:
http://172.174.176.153/dll/hiden.ppa
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/acfa4ca29c04/report/overview.html
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/acfa4ca29c04cfea8bd6e44b4fc4a85905505c41ef01dd8935e6e74db2b88ec6

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:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:SUSP_VBS_Wscript_Shell
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects the definition of 'Wscript.Shell' which is often used by Malware, FPs are possible and commmon
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

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 acfa4ca29c04cfea8bd6e44b4fc4a85905505c41ef01dd8935e6e74db2b88ec6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/356287/

Comments