MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7655b2a3888c7c7b59d5b785cfdcad319f49b17a5617bca14b4dca73e015e24. 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: 7


Intelligence 7 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b7655b2a3888c7c7b59d5b785cfdcad319f49b17a5617bca14b4dca73e015e24
SHA3-384 hash: 31bebf58daa6f1df8c7b7724c6542847f5b92d9af4be275cbd72964bc89b05258540100966b12c7746d49d9c487deb4f
SHA1 hash: f556f8499e3abbc15e6ffc32ba310c5fc7789cc3
MD5 hash: 7ac0eb7d4b4dded99d4595225d1b31ff
humanhash: beer-princess-berlin-north
File name:Swift-202208.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'480 bytes
First seen:2022-08-11 16:45:41 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 48:j0lXkmaouuDZK3Q4M6taG6QSdtWJS8rS200XAHlIlAIx0BdoulzybaUM4MbNG:je7aouuDw3+0JS8rS2VulIlAeh5GUbh
TLSH T13C715F8C3C27316CA5221AB5EC8B402EB56A475BA37484943B1DCBD6CE351ACA38EC1C
Reporter 0xToxin
Tags:RemcosRAT vbs


Avatar
0xToxin
payload url:
https://onedrive.live.com/download?cid=92680F5C211B5367&resid=92680F5C211B5367!144&authkey=AFjQBdner7SKW14

Intelligence

File Origin
# of uploads :
1
# of downloads :
360
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/298066/
Detection(s):
SecuriteInfo.com.Trojan.Win32-VBS.Save.Heuristic.32624.17737.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/62f5324e080024921b6a67f8/reports/abccf1bb-1722-4f3a-a29d-37bf38a0a843/overview
Result
Verdict:
UNKNOWN
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1050104
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
DLL side loading technique detected
Drops PE files to the startup folder
Drops VBS files to the startup folder
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Powershell drops PE file
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
Very long command line found
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 682610 Sample: Swift-202208.vbs Startdate: 11/08/2022 Architecture: WINDOWS Score: 100 64 Malicious sample detected (through community Yara rule) 2->64 66 Antivirus detection for URL or domain 2->66 68 Yara detected Remcos RAT 2->68 70 2 other signatures 2->70 7 wscript.exe 14 2->7         started        11 wscript.exe 14 2->11         started        process3 dnsIp4 40 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49760, 49769 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 7->40 42 zx07cg.ch.files.1drv.com 7->42 50 2 other IPs or domains 7->50 74 System process connects to network (likely due to code injection or exploit) 7->74 76 Wscript starts Powershell (via cmd or directly) 7->76 78 Very long command line found 7->78 13 powershell.exe 14 21 7->13         started        18 cmd.exe 1 7->18         started        44 zx07cg.ch.files.1drv.com 11->44 46 onedrive.live.com 11->46 48 ch-files.fe.1drv.com 11->48 20 powershell.exe 11->20         started        signatures5 process6 dnsIp7 52 l-0003.l-dc-msedge.net 13->52 54 192.168.2.1 unknown unknown 13->54 60 3 other IPs or domains 13->60 36 C:\Users\user\AppData\...\AgileDotNetRT64.dll, PE32+ 13->36 dropped 80 Writes to foreign memory regions 13->80 82 DLL side loading technique detected 13->82 84 Injects a PE file into a foreign processes 13->84 86 Powershell drops PE file 13->86 22 RegAsm.exe 2 2 13->22         started        26 conhost.exe 13->26         started        28 RegAsm.exe 13->28         started        88 Drops VBS files to the startup folder 18->88 90 Drops PE files to the startup folder 18->90 30 conhost.exe 18->30         started        56 zx2gqq.ch.files.1drv.com 20->56 58 onedrive.live.com 20->58 62 2 other IPs or domains 20->62 32 conhost.exe 20->32         started        34 RegAsm.exe 20->34         started        file8 signatures9 process10 dnsIp11 38 menz.ddns.net 185.140.53.130, 49809, 9001 DAVID_CRAIGGG Sweden 22->38 72 Installs a global keyboard hook 22->72 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b7655b2a3888c7c7b59d5b785cfdcad319f49b17a5617bca14b4dca73e015e24/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w5svwkryrdd4pnm5ln4fz7ok2mm7jgyxuvqxxsquwtokopqblysa._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/220811-t9yxgahgbq/
Behaviour
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Blocklisted process makes network request
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b7655b2a3888/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/b7655b2a3888c7c7b59d5b785cfdcad319f49b17a5617bca14b4dca73e015e24

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: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
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
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.

Web download

RemcosRAT

Visual Basic Script (vbs) vbs b7655b2a3888c7c7b59d5b785cfdcad319f49b17a5617bca14b4dca73e015e24

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/298066/

Comments