MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1. 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: 18


Intelligence 18 IOCs YARA 29 File information Comments
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SHA256 hash: 472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
SHA3-384 hash: 4d1368f780afa829c916a049c8e4e4dbef4cc47db9ffd7e31be0ab2d7c208bcc85136acc81a8cb3344ab3bef2845ca54
SHA1 hash: 1778d5bad1acb999458092745af2a6ac3fce39a3
MD5 hash: 96a62642b79fcb88da4f854b2c46c64c
humanhash: minnesota-ceiling-fourteen-fifteen
File name:#Inv_PI_{number_12}_pdf.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'170'432 bytes
First seen:2024-05-23 09:00:39 UTC
Last seen:2024-05-23 09:26:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:+8lmSlcXrLArMThOTAiVOpoUJ3jEDFXF9bo:9mSubfQrVS1xjcFDo
Threatray 4'119 similar samples on MalwareBazaar
TLSH T19345E23D18FD22E69164C6A8CFE4C627B410F4EA3193A931A9D24B55174BE0FB9C327D
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter TeamDreier
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
350
Origin country :
DK DK
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1.exe
Verdict:
Malicious activity
Analysis date:
2024-05-23 09:03:07 UTC
Tags:
remcos rat remote evasion stealer
Link:
https://app.any.run/tasks/9d321a6e-31a0-40e2-847b-7c3ad84ea152

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.16826.6026.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Creating a process with a hidden window
Launching a process
Restart of the analyzed sample
Creating a file
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/664f05d9458fabe8a956b1f7/reports/11caa286-46e2-42ab-a3e6-c5cfdbf5b54f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b003303f-81d2-4cef-a26e-0816f8e1d2e1
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1446388
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Creates autostart registry keys with suspicious names
Delayed program exit found
Detected Remcos RAT
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1446388 Sample: #Inv_PI_{number_12}_pdf.exe Startdate: 23/05/2024 Architecture: WINDOWS Score: 100 84 geoplugin.net 2->84 96 Found malware configuration 2->96 98 Malicious sample detected (through community Yara rule) 2->98 100 Antivirus detection for URL or domain 2->100 102 14 other signatures 2->102 10 #Inv_PI_{number_12}_pdf.exe 7 2->10         started        14 GxGUIRTmI.exe 5 2->14         started        16 remcos.exe 2->16         started        18 2 other processes 2->18 signatures3 process4 file5 80 C:\Users\user\AppData\RoamingbehaviorgraphxGUIRTmI.exe, PE32 10->80 dropped 82 C:\Users\user\AppData\Local\...\tmp8BFF.tmp, XML 10->82 dropped 126 Contains functionality to bypass UAC (CMSTPLUA) 10->126 128 Contains functionalty to change the wallpaper 10->128 130 Contains functionality to steal Chrome passwords or cookies 10->130 138 5 other signatures 10->138 20 #Inv_PI_{number_12}_pdf.exe 2 4 10->20         started        24 powershell.exe 23 10->24         started        26 schtasks.exe 1 10->26         started        132 Multi AV Scanner detection for dropped file 14->132 134 Machine Learning detection for dropped file 14->134 28 GxGUIRTmI.exe 14->28         started        36 2 other processes 14->36 136 Injects a PE file into a foreign processes 16->136 30 remcos.exe 16->30         started        32 schtasks.exe 16->32         started        34 remcos.exe 18->34         started        38 5 other processes 18->38 signatures6 process7 file8 78 C:\Users\user\AppData\Roaming\...\remcos.exe, PE32 20->78 dropped 104 Detected Remcos RAT 20->104 106 Creates autostart registry keys with suspicious names 20->106 40 remcos.exe 5 20->40         started        108 Loading BitLocker PowerShell Module 24->108 43 conhost.exe 24->43         started        45 conhost.exe 26->45         started        47 conhost.exe 32->47         started        49 conhost.exe 36->49         started        51 conhost.exe 36->51         started        53 conhost.exe 38->53         started        55 conhost.exe 38->55         started        signatures9 process10 signatures11 110 Multi AV Scanner detection for dropped file 40->110 112 Tries to steal Mail credentials (via file registry) 40->112 114 Machine Learning detection for dropped file 40->114 116 2 other signatures 40->116 57 remcos.exe 40->57         started        61 powershell.exe 40->61         started        63 schtasks.exe 1 40->63         started        process12 dnsIp13 86 45.95.169.137, 2404, 49703, 49704 GIGANET-HUGigaNetInternetServiceProviderCoHU Croatia (LOCAL Name: Hrvatska) 57->86 88 geoplugin.net 178.237.33.50, 49706, 80 ATOM86-ASATOM86NL Netherlands 57->88 118 Detected Remcos RAT 57->118 120 Tries to harvest and steal browser information (history, passwords, etc) 57->120 122 Maps a DLL or memory area into another process 57->122 65 remcos.exe 57->65         started        68 remcos.exe 57->68         started        70 remcos.exe 57->70         started        124 Loading BitLocker PowerShell Module 61->124 72 WmiPrvSE.exe 61->72         started        74 conhost.exe 61->74         started        76 conhost.exe 63->76         started        signatures14 process15 signatures16 90 Tries to steal Instant Messenger accounts or passwords 65->90 92 Tries to steal Mail credentials (via file / registry access) 65->92 94 Tries to harvest and steal browser information (history, passwords, etc) 68->94
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2024-05-23 01:28:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i4vi7p7tlto2jguhbu3s7jw2kdpp3beagscdrysf6enk3fkgiliq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
063e8dc308fea1f6ab248e3704894c8311b85959301e6389ae5ee55726e3ba2a
RemcosRAT
95f60da49e0b3b74cbc5232eb3332000146c1d2a5b4923fb118b8971585fa81f
RemcosRAT
ac28e104b06d7025bab07468070e74b3ea0017b34d25e48150b6c55f8ffda4bf
RemcosRAT
b162074bf62543007615d08db1dffa75022858944a0ecc5de5ed8d3be561e3da
RemcosRAT
+ 4'109 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection execution persistence rat spyware stealer
Link:
https://tria.ge/reports/240523-kywtasbd81/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
45.95.169.137:2404
Unpacked files
SH256 hash:
0b7dcc18b0ef39734a24ca5923b02df82c670d08365fe376f2ed4ff9fcbc6303
MD5 hash:
0441cc0dacc6d821252e66a156b1d9bd
SHA1 hash:
df46cc702950a53a5de7b804d2076ef03f8ac6b4
Link:
https://www.unpac.me/results/7050b91b-9877-4657-91f6-f5176fd98de2/
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/7050b91b-9877-4657-91f6-f5176fd98de2/
SH256 hash:
b1c607ab763c2002dafe4e76bb87113dce70b9900f891cdf90292346e09d92fa
MD5 hash:
22004f4ac335817bd279611771321fa8
SHA1 hash:
4ecd9115ec0b6e075d7a9aeaf485f1ea3da81988
Link:
https://www.unpac.me/results/7050b91b-9877-4657-91f6-f5176fd98de2/
SH256 hash:
27e9d577a8d83375d489ba14f22870e6612a4d2d441013d0f9548186bbae57e4
MD5 hash:
ec81aaeaebf52c76b49f4b067d7a7698
SHA1 hash:
11b7bebf4c502e9188659d82b9dfbb5ea2ea2427
Detections:
Remcos
Create hunting rule
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Link:
https://www.unpac.me/results/7050b91b-9877-4657-91f6-f5176fd98de2/
SH256 hash:
472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
MD5 hash:
96a62642b79fcb88da4f854b2c46c64c
SHA1 hash:
1778d5bad1acb999458092745af2a6ac3fce39a3
Link:
https://www.unpac.me/results/7050b91b-9877-4657-91f6-f5176fd98de2/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/472a8fbff35c/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/472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:iexplorer_remcos
Create hunting rule
Author:iam-py-test
Description:Detect iexplorer being taken over by Remcos
Rule name:INDICATOR_EXE_Packed_MPress
Create hunting rule
Author:ditekSHen
Description:Detects executables built or packed with MPress PE compressor
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Remcos
Create hunting rule
Author:kevoreilly
Description:Remcos Payload
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:TeslaCryptPackedMalware
Create hunting rule
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_Remcos_b296e965
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/exploring-the-ref2731-intrusion-set
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.
Rule name:win_remcos_w0
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in remcos rat Samples.
Rule name:yarahub_win_remcos_rat_unpacked_aug_2023
Create hunting rule
Author:Matthew @ Embee_Research
Rule name:yara_template
Create hunting rule

File information

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

Malspam

RemcosRAT

Executable exe 472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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