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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b86e4c334af2fdbe88b3cb50cd85c47eac10a9e9b9ac7c0dd656e37cabce7a5a. 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: 11


Maldoc score: 4


Intelligence 11 IOCs YARA 1 File information Comments

SHA256 hash: b86e4c334af2fdbe88b3cb50cd85c47eac10a9e9b9ac7c0dd656e37cabce7a5a
SHA3-384 hash: 14a98b573b3f7b6568001bd0a8be6416691e582305afd82b89a4f6f1eaeefcc07fcad4887acb4d7bb9ed38cfd2f5d1bd
SHA1 hash: 96fd97dc12ae0a792c85fdf7ec9a2424a90097b3
MD5 hash: 912e8c547d1e8dd1e12afbd819074b30
humanhash: gee-gee-neptune-harry
File name:QPS-36477.xls
Download: download sample
Signature RemcosRAT
File size:1'094'656 bytes
First seen:2024-10-08 13:21:22 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:ImzHJEHAfwu4hCD3DERnLRmF8D3Prf1T3dmFupFZ6pxw3FQNXcp5tkM3r4r:DLw/hCbARM8fN3VbgxmScpB4r
TLSH T1A535DF83EA1D4F62CE45423066F7177A1320CC83D522872B22F5772939FBAD06956FAD
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika xls
Reporter abuse_ch
Tags:RemcosRAT xls

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 4
OLE dump

MalwareBazaar was able to identify 31 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
4114 bytesMBD001CA3FC/CompObj
5244 bytesMBD001CA3FC/DocumentSummaryInformation
690976 bytesMBD001CA3FC/SummaryInformation
720 bytesMBD001CA3FC/MBD0018D4CE/Ole
84 bytesMBD001CA3FC/MBD0018D4CE/ObjInfo
9197671 bytesMBD001CA3FC/MBD0018D4CE/Contents
10114 bytesMBD001CA3FC/MBD002A52B4/CompObj
1150945 bytesMBD001CA3FC/MBD002A52B4/Package
12114 bytesMBD001CA3FC/MBD002A56E1/CompObj
1331124 bytesMBD001CA3FC/MBD002A56E1/Package
14114 bytesMBD001CA3FC/MBD002A5E23/CompObj
15484 bytesMBD001CA3FC/MBD002A5E23/DocumentSummaryInformation
1619956 bytesMBD001CA3FC/MBD002A5E23/SummaryInformation
1795624 bytesMBD001CA3FC/MBD002A5E23/Workbook
1894 bytesMBD001CA3FC/MBD002A6130/CompObj
1964 bytesMBD001CA3FC/MBD002A6130/Ole
2021760 bytesMBD001CA3FC/MBD002A6130/CONTENTS
21218908 bytesMBD001CA3FC/Workbook
22434 bytesMBD001CA3FD/Ole
23339321 bytesWorkbook
24525 bytes_VBA_PROJECT_CUR/PROJECT
25104 bytes_VBA_PROJECT_CUR/PROJECTwm
26977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
27977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
28977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
29985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
302644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
31553 bytes_VBA_PROJECT_CUR/VBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
1
# of downloads :
408
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
QPS-36477.xls
Verdict:
No threats detected
Analysis date:
2024-10-08 13:26:47 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
96.5%
Tags:
Powershell Exploit Trojan Macro
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
https://wrath.me/EhYykL
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Document image
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros
Gathering data
Result
Threat name:
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Signature
Bypasses PowerShell execution policy
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
Delayed program exit found
Detected Remcos RAT
Document exploit detected (process start blacklist hit)
Excel sheet contains many unusual embedded objects
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Installs new ROOT certificates
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Multi AV Scanner detection for submitted file
Obfuscated command line found
PowerShell case anomaly found
Searches for Windows Mail specific files
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: File With Uncommon Extension Created By An Office Application
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: PowerShell Base64 Encoded Invoke Keyword
Sigma detected: Remcos
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious command line found
Suspicious execution chain found
Suspicious powershell command line found
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 dynamic DNS services
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1529026 Sample: QPS-36477.xls Startdate: 08/10/2024 Architecture: WINDOWS Score: 100 106 Suricata IDS alerts for network traffic 2->106 108 Found malware configuration 2->108 110 Malicious sample detected (through community Yara rule) 2->110 112 22 other signatures 2->112 13 EXCEL.EXE 59 33 2->13         started        process3 dnsIp4 102 192.3.220.40, 49162, 49164, 49165 AS-COLOCROSSINGUS United States 13->102 104 wrath.me 188.114.96.3, 443, 49161, 49167 CLOUDFLARENETUS European Union 13->104 84 C:\Users\user\Desktop\QPS-36477.xls (copy), Composite 13->84 dropped 86 C:\Users\...\newthingtobeonlinefor[1].hta, HTML 13->86 dropped 166 Microsoft Office drops suspicious files 13->166 18 mshta.exe 10 13->18         started        22 mshta.exe 10 13->22         started        file5 signatures6 process7 dnsIp8 88 188.114.97.3, 443, 49163, 49169 CLOUDFLARENETUS European Union 18->88 90 wrath.me 18->90 114 Suspicious command line found 18->114 116 PowerShell case anomaly found 18->116 24 cmd.exe 18->24         started        92 wrath.me 22->92 27 cmd.exe 22->27         started        signatures9 process10 signatures11 138 Suspicious powershell command line found 24->138 140 Wscript starts Powershell (via cmd or directly) 24->140 142 PowerShell case anomaly found 24->142 29 powershell.exe 23 24->29         started        33 powershell.exe 27->33         started        process12 file13 78 C:\Users\...\verybestthingswesharedfornew.vbS, Unicode 29->78 dropped 80 C:\Users\user\AppData\...\uvrrkyhh.cmdline, Unicode 29->80 dropped 148 Suspicious powershell command line found 29->148 150 Obfuscated command line found 29->150 152 Installs new ROOT certificates 29->152 154 Suspicious execution chain found 29->154 35 wscript.exe 1 29->35         started        38 csc.exe 2 29->38         started        41 wscript.exe 33->41         started        43 csc.exe 33->43         started        signatures14 process15 file16 118 Suspicious powershell command line found 35->118 120 Wscript starts Powershell (via cmd or directly) 35->120 122 Bypasses PowerShell execution policy 35->122 124 2 other signatures 35->124 45 powershell.exe 4 35->45         started        74 C:\Users\user\AppData\Local\...\uvrrkyhh.dll, PE32 38->74 dropped 48 cvtres.exe 38->48         started        50 powershell.exe 41->50         started        76 C:\Users\user\AppData\Local\...\lkzgbmkm.dll, PE32 43->76 dropped 52 cvtres.exe 43->52         started        signatures17 process18 signatures19 144 Suspicious powershell command line found 45->144 146 Obfuscated command line found 45->146 54 powershell.exe 12 5 45->54         started        58 powershell.exe 50->58         started        process20 dnsIp21 94 ia600102.us.archive.org 207.241.227.242, 443, 49166, 49176 INTERNET-ARCHIVEUS United States 54->94 134 Writes to foreign memory regions 54->134 136 Injects a PE file into a foreign processes 54->136 60 RegAsm.exe 54->60         started        65 RegAsm.exe 58->65         started        signatures22 process23 dnsIp24 96 idabo.duckdns.org 60->96 98 idabo.duckdns.org 135.148.195.248, 49173, 49174, 6875 AVAYAUS United States 60->98 100 geoplugin.net 178.237.33.50, 49175, 80 ATOM86-ASATOM86NL Netherlands 60->100 82 C:\ProgramData\remcos\logs.dat, data 60->82 dropped 156 Contains functionality to bypass UAC (CMSTPLUA) 60->156 158 Detected Remcos RAT 60->158 160 Tries to steal Mail credentials (via file registry) 60->160 164 7 other signatures 60->164 67 RegAsm.exe 60->67         started        70 RegAsm.exe 60->70         started        72 RegAsm.exe 60->72         started        file25 162 Uses dynamic DNS services 96->162 signatures26 process27 signatures28 126 Tries to steal Instant Messenger accounts or passwords 67->126 128 Tries to steal Mail credentials (via file / registry access) 67->128 130 Searches for Windows Mail specific files 67->130 132 Tries to harvest and steal browser information (history, passwords, etc) 70->132
Threat name:
Win32.Trojan.Generic
Status:
Malicious
First seen:
2024-10-08 08:31:49 UTC
File Type:
Document
Extracted files:
75
AV detection:
7 of 38 (18.42%)
Threat level:
  2/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Evasion via Device Credential Deployment
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://ia600102.us.archive.org/32/items/detah-note-v_202410/DetahNote_V.jpg%20
Malware Family:
n/a
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
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:informational_win_ole_protected
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.

File information


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

Comments