MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a8ae1e4845f9d27041cef35528f245961cd8b25399096d661d0d93df97375ce. 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: 13


Intelligence 13 IOCs YARA 8 File information Comments 1

SHA256 hash: 4a8ae1e4845f9d27041cef35528f245961cd8b25399096d661d0d93df97375ce
SHA3-384 hash: b4bed34e37c96c97ec201545fb3354f8b4da87098ef58f56bda0c70957e207d9f74d44846d58b6825ecb76369d31c25f
SHA1 hash: 808ac74f66bccc646ab7770766f0817ad1ec15ae
MD5 hash: c4ffb0ae8bc377ff6062360971fb1037
humanhash: one-illinois-venus-indigo
File name:c4ffb0ae8bc377ff6062360971fb1037
Download: download sample
Signature RemcosRAT
File size:1'196'544 bytes
First seen:2021-09-07 15:35:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 24576:pVLpXk+b6umJBDAJeqtgisjK1olV3mHKzzkc:pVLfqBDAfgiW9NU8
Threatray 702 similar samples on MalwareBazaar
TLSH T12A459D326BED4D14E5DE0BB4D0B07630C3B5AC1B76AADBCAD808B96E5873781A441377
dhash icon b032cc442c8cd290 (6 x a310Logger, 2 x Formbook, 1 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe RemcosRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c4ffb0ae8bc377ff6062360971fb1037
Verdict:
Malicious activity
Analysis date:
2021-09-07 15:36:20 UTC
Tags:
rat remcos

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Sending a UDP request
Using the Windows Management Instrumentation requests
DNS request
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses powershell Test-Connection to delay payload execution;
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 479188 Sample: kWGdFglyCp Startdate: 07/09/2021 Architecture: WINDOWS Score: 100 40 youtube.com 2->40 42 outlook.com 2->42 44 2 other IPs or domains 2->44 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Multi AV Scanner detection for dropped file 2->60 62 7 other signatures 2->62 8 kWGdFglyCp.exe 9 2->8         started        signatures3 process4 file5 32 C:\Users\user\AppData\Roaming\...\pade.exe, PE32 8->32 dropped 34 C:\Users\user\AppData\...\kWGdFglyCp.exe, PE32 8->34 dropped 36 C:\Users\user\...\pade.exe:Zone.Identifier, ASCII 8->36 dropped 38 2 other malicious files 8->38 dropped 64 Creates an undocumented autostart registry key 8->64 66 Writes to foreign memory regions 8->66 68 Uses powershell Test-Connection to delay payload execution; 8->68 70 Injects a PE file into a foreign processes 8->70 12 kWGdFglyCp.exe 8->12         started        15 kWGdFglyCp.exe 8->15         started        18 powershell.exe 19 8->18         started        20 7 other processes 8->20 signatures6 process7 dnsIp8 72 Multi AV Scanner detection for dropped file 12->72 74 Machine Learning detection for dropped file 12->74 76 Contains functionality to steal Chrome passwords or cookies 12->76 78 3 other signatures 12->78 46 79.134.225.77, 2050, 49725, 49726 FINK-TELECOM-SERVICESCH Switzerland 15->46 48 youtube.com 18->48 22 conhost.exe 18->22         started        50 192.168.2.1 unknown unknown 20->50 52 outlook.com 20->52 54 4 other IPs or domains 20->54 24 conhost.exe 20->24         started        26 conhost.exe 20->26         started        28 conhost.exe 20->28         started        30 2 other processes 20->30 signatures9 process10
Threat name:
ByteCode-MSIL.Downloader.Seraph
Status:
Malicious
First seen:
2021-09-06 13:55:20 UTC
AV detection:
11 of 27 (40.74%)
Threat level:
  3/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Remcos
Malware Config
C2 Extraction:
79.134.225.77:2050
Unpacked files
SH256 hash:
d631f57099bc4612ec2459d1929c2257ff9c868f05aba763817cf6f9e86516fa
MD5 hash:
f0ab9218040fe67702b0b75ad72196c1
SHA1 hash:
6e19d8fb00ba442c36e54b6a72c23dff9008b435
Detections:
win_remcos_g0
SH256 hash:
7edcec24fe6144904ca3e4a55c7b458ebbf2a1422bd2e2944bf543c3ca6f0f4d
MD5 hash:
dbb7b0958d6f461e35a7c61d13ee53cf
SHA1 hash:
f308c472f19729c2de8ad5ac1397934b87c8a3bb
SH256 hash:
ee333b65d0ce67be5d72b3a733e4e0e14765b203deeb3c43039fc4ecc78b7fda
MD5 hash:
1d7c48170319bc6bdde2dfb46b0587c1
SHA1 hash:
44c678e576de6e48ebe5b633071e11d6a2dc54c4
SH256 hash:
4a8ae1e4845f9d27041cef35528f245961cd8b25399096d661d0d93df97375ce
MD5 hash:
c4ffb0ae8bc377ff6062360971fb1037
SHA1 hash:
808ac74f66bccc646ab7770766f0817ad1ec15ae
Malware family:
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:abuse.ch
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:pe_imphash
Rule name:pe_imphash
Rule name:Remcos
Author:kevoreilly
Description:Remcos Payload
Rule name:remcos_rat
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

RemcosRAT

Executable exe 4a8ae1e4845f9d27041cef35528f245961cd8b25399096d661d0d93df97375ce

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-09-07 15:35:34 UTC

url : hxxp://wingsteck.com/ts/Y/rrrem.exe