MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3
SHA3-384 hash: aa76ac46e15200770d76008d97ef532baedec1b47bcd4ca818593baaa14135a9f2aeb254f126b23827390f6b7c2a2193
SHA1 hash: 3eb23e362ecba770d842e99dd6bf386f1b6c0b47
MD5 hash: 5d8dc4f7c58f4681dee4ee9f6ecc3498
humanhash: stairway-seventeen-seven-utah
File name:5d8dc4f7c58f4681dee4ee9f6ecc3498.msi
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'171'328 bytes
First seen:2025-02-01 11:00:27 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 49152:1W7g8r6F5mCmR+ZuBRQPcM6rUa1eH8CvQbFpsPNAbJU2DKcDahV3dZj:Zo6Au/6rUorpjbJTOcWTdZ
TLSH T11CE5F115B3C3C622C15D027BF559FE0E1438FE63573481E7BAF9399E49B48C0A2B9A52
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter abuse_ch
Tags:msi RAT RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
104
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Win.Trojan.Penguish-10015880-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679dfef0a9881a7a01c4dffd
Tags:
shellcode dropper virus
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context cmd evasive fingerprint lolbin remote wix
Link:
https://www.filescan.io/uploads/679dfef1a4e90e7849c2bf47/reports/bd5578d3-f1e7-4ba3-899d-86b471722225/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1604402
Signature
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Machine Learning detection for dropped file
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
Switches to a custom stack to bypass stack traces
Writes to foreign memory regions
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1604402 Sample: UiOqs2G60O.msi Startdate: 01/02/2025 Architecture: WINDOWS Score: 100 56 185.157.162.126 OBE-EUROPEObenetworkEuropeSE Sweden 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for dropped file 2->62 64 7 other signatures 2->64 9 msiexec.exe 18 46 2->9         started        12 EHttpSrv.exe 1 2->12         started        15 EHttpSrv.exe 1 2->15         started        17 msiexec.exe 3 2->17         started        signatures3 process4 file5 46 C:\Windows\Installer\MSI7287.tmp, PE32 9->46 dropped 48 C:\Windows\Installer\MSI7267.tmp, PE32 9->48 dropped 50 C:\Windows\Installer\MSI7237.tmp, PE32 9->50 dropped 52 5 other files (3 malicious) 9->52 dropped 19 EHttpSrv.exe 1 9->19         started        22 msiexec.exe 9->22         started        76 Maps a DLL or memory area into another process 12->76 24 cmd.exe 2 12->24         started        27 cmd.exe 1 15->27         started        signatures6 process7 file8 66 Found API chain indicative of debugger detection 19->66 68 Maps a DLL or memory area into another process 19->68 70 Switches to a custom stack to bypass stack traces 19->70 29 cmd.exe 4 19->29         started        44 C:\Users\user\AppData\Local\...\bkcmphshyhg, PE32 24->44 dropped 72 Writes to foreign memory regions 24->72 33 EHttpSrv.exe 24->33         started        35 conhost.exe 24->35         started        37 conhost.exe 27->37         started        signatures9 process10 file11 54 C:\Users\user\AppData\...\vvbbqkwgxggbom, PE32 29->54 dropped 78 Writes to foreign memory regions 29->78 80 Found hidden mapped module (file has been removed from disk) 29->80 82 Maps a DLL or memory area into another process 29->82 84 Switches to a custom stack to bypass stack traces 29->84 39 EHttpSrv.exe 29->39         started        42 conhost.exe 29->42         started        86 Found direct / indirect Syscall (likely to bypass EDR) 33->86 signatures12 process13 signatures14 74 Found direct / indirect Syscall (likely to bypass EDR) 39->74
Score:
11%
Verdict:
Benign
File Type:
ARCHIVE
Link:
https://malprob.io/report/4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3/
Threat name:
Win32.Trojan.RaccoonStealer
Create hunting rule
Status:
Malicious
First seen:
2025-01-31 07:48:50 UTC
File Type:
Binary (Archive)
Extracted files:
298
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j7najh4u4k4re63rzmivrdfmnm3z2to5vnd7nyxqfd62v5423djq._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:hijackloader family:remcos botnet:v2 discovery loader persistence privilege_escalation rat
Link:
https://tria.ge/reports/250201-m4jf9sypgx/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Enumerates physical storage devices
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Drops file in Windows directory
Executes dropped EXE
Loads dropped DLL
Suspicious use of SetThreadContext
Enumerates connected drives
Detects HijackLoader (aka IDAT Loader)
HijackLoader
Hijackloader family
Remcos
Remcos family
Malware Config
C2 Extraction:
185.157.162.126:1995
Verdict:
Malicious
Tags:
Win.Trojan.Penguish-10015880-0
YARA:
n/a
Link:
https://app.threat.zone/submission/8097e1c4-5747-43b0-801c-ac340ca506cc
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4fda049f94e2/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/4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3

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: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:Detect_LATAM_MSI_Banker
Create hunting rule
Rule name:Suspicious_Latam_MSI_and_ZIP_Files
Create hunting rule
Author:eremit4, P4nd3m1cb0y
Description:Detects suspicious .msi and .zip files used in Latam banking trojan campaigns.
Rule name:suspicious_msi_file
Create hunting rule
Author:Johnk3r
Description:Detects common strings, DLL and API in Banker_BR
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

RemcosRAT

Microsoft Software Installer (MSI) msi 4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3420983/
  
Delivery method
Distributed via web download

Comments