MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b9c5a6059ee5150b5837e446196c4349571d80336b438056f687d7044cd246b9. 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: 9


Intelligence 9 IOCs YARA 5 File information Comments
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SHA256 hash: b9c5a6059ee5150b5837e446196c4349571d80336b438056f687d7044cd246b9
SHA3-384 hash: f8d47deb5b2d0c76ec61847e489ed20b2ae2761bdd40f12883a5117ea160944c3e0ad00a23c050c972dc145c15f0dd7c
SHA1 hash: 386286d8ff06c6eff3951a2930cdd1d4b63ce570
MD5 hash: ff8c3736ac246c6ec8cb08a3cef7e0cc
humanhash: robert-potato-april-seventeen
File name:Aviso de Pago del 07.10.2021,pdf.vbs
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:6'350 bytes
First seen:2021-10-07 07:11:50 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 48:FL+IbM6MAcB87BSBphplSpB9yL7YC8Zbm:1BwPAcB87BSB3plQB9g7YCMbm
Threatray 704 similar samples on MalwareBazaar
TLSH T121D127E9CC4342689347DAB91F5E8CCCC916941B60EDB4AC48D1D7BEA826CD9B3DE431
Reporter lowmal3
Tags:212.192.246.191 officialsw chickenkiller com officialsw.chickenkiller.com RemcosRAT vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/195643/
Detection(s):
SecuriteInfo.com.ISB.Downloadergen44.31828.8445.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
powershell
Link:
https://www.filescan.io/uploads/615e9dca98a6280f39337654/reports/687127cf-18a1-4a29-8630-df9bcee86bdd/overview
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/866086
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Creates an undocumented autostart registry key
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Obfuscated command line found
Self deletion via cmd delete
Sigma detected: CrackMapExec PowerShell Obfuscation
Sigma detected: Suspicious PowerShell Command Line
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Obfuscated Powershell
Yara detected Powershell download and execute
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 498514 Sample: Aviso de Pago del 07.10.202... Startdate: 07/10/2021 Architecture: WINDOWS Score: 100 31 Found malware configuration 2->31 33 Malicious sample detected (through community Yara rule) 2->33 35 Detected Remcos RAT 2->35 37 7 other signatures 2->37 7 wscript.exe 1 2->7         started        process3 signatures4 39 VBScript performs obfuscated calls to suspicious functions 7->39 41 Wscript starts Powershell (via cmd or directly) 7->41 43 Obfuscated command line found 7->43 45 Very long command line found 7->45 10 powershell.exe 14 30 7->10         started        process5 dnsIp6 29 Officialsw.chickenkiller.com 212.192.246.191, 2310, 49754, 49769 RHC-HOSTINGGB Russian Federation 10->29 25 C:\Users\Public\Run\Run.BAT, ASCII 10->25 dropped 47 Creates an undocumented autostart registry key 10->47 49 Writes to foreign memory regions 10->49 51 Injects a PE file into a foreign processes 10->51 15 aspnet_compiler.exe 10->15         started        18 aspnet_compiler.exe 10->18         started        21 conhost.exe 10->21         started        23 aspnet_compiler.exe 10->23         started        file7 signatures8 process9 dnsIp10 53 Contains functionality to steal Chrome passwords or cookies 15->53 55 Contains functionality to inject code into remote processes 15->55 57 Contains functionality to steal Firefox passwords or cookies 15->57 59 Delayed program exit found 15->59 27 Officialsw.chickenkiller.com 18->27 61 Installs a global keyboard hook 18->61 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b9c5a6059ee5150b5837e446196c4349571d80336b438056f687d7044cd246b9/
Threat name:
Script.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-10-07 07:12:08 UTC
AV detection:
2 of 45 (4.44%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xhc2mbm64ukqwwbx4rdbs3cdjflr3abtnnbyavxwq7lqitgsi24q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
1730338ca0fbfe0985bed5638fc8599a6dd38761ab8b89e3d8a076947a320028
RemcosRAT
226d0ea20dccb9f0b091d02ccacaec73b537fc9b61157eff759b74d742d48b00
RemcosRAT
6f476c63a6d699d1f0166313deb1e0f623c689882de8411bcd4f0b4f880526dd
RemcosRAT
772a319b31a1922eadd022f30aa60680e911f758d4c81c4dbf16614cf7791f0a
RemcosRAT
7eb677c1c5c60d34da90cab2b4ea019c500b5c3db6964cc14849dbe2f9f5fa30
RemcosRAT
91e8ea3e431c0ad9faf6dfe01eb29e4834940054379deb8b657d9cbe23e91682
RemcosRAT
9a50c056a96999f841ea1ef7bb6674da47579f5cafe02e295c75e980b36219a9
RemcosRAT
a3faa214333ce59ed895410e011c4cbd44fe51b26ed5bf2a0ed54e225616f893
RemcosRAT
b3e18d1026779e01b6bc834a8da488eeb669e5e366ef8d495c109c0f1424d3c1
RemcosRAT
e4b26e2c09188228c4db16281887a17e90baaf95c7b691fa75d05af9f79ff20a
RemcosRAT
+ 694 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:es rat
Link:
https://tria.ge/reports/211007-h1jweabhh3/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Blocklisted process makes network request
Remcos
Malware Config
C2 Extraction:
Officialsw.chickenkiller.com:2310
official.ydns.eu:2310
hurricane.ydns.eu:2310
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/b9c5a6059ee5150b5837e446196c4349571d80336b438056f687d7044cd246b9

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:ach_RemcosRAT
Create hunting rule
Author:abuse.ch
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

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 b9c5a6059ee5150b5837e446196c4349571d80336b438056f687d7044cd246b9

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/195643/

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