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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1
SHA3-384 hash: c56e474e4f7b97e8aeab48a438385e93ded653c8dd536426708f22bb021064714663bc3fbc8bfa8335e98ae107ad36aa
SHA1 hash: 4457b65f714f803cbf1206530b4795aa944a75c8
MD5 hash: 72d8e169ad35b47ec2c78eca9daf6887
humanhash: nine-blue-seventeen-music
File name:CI.xls
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'148'416 bytes
First seen:2024-11-13 07:20:56 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 24576:nq9PLiijE2Z5Z2am8x/gY/tMJE8F84LJQodszysshMx6YIVf9QCIr+:nEPLiij7Z5ZK8Fg8tMpFjLJQodXsehYo
TLSH T127352351FDCACA4BE5969E3208D6E5B22514BCD2EF5897052660B71F387E9F40F8388C
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:cve-2017-0199 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 15 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
499 bytesMBD002CC19B/CompObj
5799461 bytesMBD002CC19B/Package
6906 bytesMBD002CC19C/Ole
7325078 bytesWorkbook
8525 bytes_VBA_PROJECT_CUR/PROJECT
9104 bytes_VBA_PROJECT_CUR/PROJECTwm
10977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
11977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
12977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
13985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
142644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
15553 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 :
454
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CI.xls
Verdict:
No threats detected
Analysis date:
2024-11-13 07:23:10 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/943f9525-ff81-465a-a26e-66406b3aba3f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection(s):
SecuriteInfo.com.Other.Malware-gen.20234.27473.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.93TilInfinity.20240412.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=673518520552fd58596bafec
Tags:
shellcode remcos trojan office
Result
Verdict:
Clean
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Searching for the window
DNS request
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1/results/dashboard
Payload URLs
URL
File name
https://4t.gg/lJ7Tos?¢=abundant&stepmother=redundant&chance=wet
Embedded Ole
Behaviour
SuspiciousRTF detected
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
macros
Link:
https://www.filescan.io/uploads/67345365f4d2188486498c39/reports/bd031d9f-e14f-4075-a1dc-3ecc752c900d/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1
Gathering data
Result
Threat name:
Remcos, HTMLPhisher
Create hunting rule
Detection:
malicious
Classification:
rans.phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1554918
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
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 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: HackTool - CrackMapExec PowerShell Obfuscation
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: Remcos
Sigma detected: Suspicious Microsoft Office Child Process
Sigma detected: Suspicious MSHTA Child Process
Sigma detected: Suspicious PowerShell Parameter Substring
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
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 HtmlPhish44
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1554918 Sample: CI.xls Startdate: 13/11/2024 Architecture: WINDOWS Score: 100 107 Suricata IDS alerts for network traffic 2->107 109 Found malware configuration 2->109 111 Malicious sample detected (through community Yara rule) 2->111 113 27 other signatures 2->113 12 EXCEL.EXE 57 49 2->12         started        process3 dnsIp4 97 192.3.220.29, 49162, 49164, 49165 AS-COLOCROSSINGUS United States 12->97 99 4t.gg 221.146.204.133, 443, 49161, 49163 KIXS-AS-KRKoreaTelecomKR Korea Republic of 12->99 81 C:\Users\user\Desktop\CI.xls (copy), Composite 12->81 dropped 83 C:\Users\user\...\~DF148B28EC51913E69.TMP, Composite 12->83 dropped 85 seemebestthingswhi...thingsgodown[1].hta, HTML 12->85 dropped 149 Microsoft Office drops suspicious files 12->149 17 mshta.exe 10 12->17         started        21 mshta.exe 12->21         started        23 AcroRd32.exe 12->23         started        file5 signatures6 process7 dnsIp8 87 4t.gg 17->87 115 Suspicious powershell command line found 17->115 117 PowerShell case anomaly found 17->117 25 powershell.exe 24 17->25         started        89 4t.gg 21->89 29 powershell.exe 21->29         started        signatures9 process10 file11 77 seemybestgirlthink...sahotchickbutfu.vbS, Unicode 25->77 dropped 79 C:\Users\user\AppData\...\btapiso5.cmdline, Unicode 25->79 dropped 131 Suspicious powershell command line found 25->131 133 Obfuscated command line found 25->133 31 wscript.exe 1 25->31         started        34 powershell.exe 4 25->34         started        36 csc.exe 2 25->36         started        39 wscript.exe 29->39         started        41 csc.exe 29->41         started        43 powershell.exe 29->43         started        signatures12 process13 file14 151 Suspicious powershell command line found 31->151 153 Wscript starts Powershell (via cmd or directly) 31->153 155 Bypasses PowerShell execution policy 31->155 159 2 other signatures 31->159 45 powershell.exe 2 31->45         started        157 Installs new ROOT certificates 34->157 73 C:\Users\user\AppData\Local\...\btapiso5.dll, PE32 36->73 dropped 48 cvtres.exe 36->48         started        50 powershell.exe 39->50         started        75 C:\Users\user\AppData\Local\...\pdorp154.dll, PE32 41->75 dropped 52 cvtres.exe 41->52         started        signatures15 process16 signatures17 135 Suspicious powershell command line found 45->135 137 Obfuscated command line found 45->137 54 powershell.exe 12 4 45->54         started        58 powershell.exe 50->58         started        process18 dnsIp19 91 ip.1017.filemail.com 142.215.209.78, 443, 49166, 49174 HUMBER-COLLEGECA Canada 54->91 93 1017.filemail.com 54->93 127 Writes to foreign memory regions 54->127 129 Injects a PE file into a foreign processes 54->129 60 CasPol.exe 54->60         started        95 1017.filemail.com 58->95 64 CasPol.exe 58->64         started        signatures20 process21 dnsIp22 101 shlobo.duckdns.org 60->101 103 192.3.101.149, 49179, 49180, 6946 AS-COLOCROSSINGUS United States 60->103 105 2 other IPs or domains 60->105 139 Contains functionality to bypass UAC (CMSTPLUA) 60->139 141 Detected Remcos RAT 60->141 143 Tries to steal Mail credentials (via file registry) 60->143 147 6 other signatures 60->147 66 CasPol.exe 60->66         started        69 CasPol.exe 60->69         started        71 CasPol.exe 60->71         started        signatures23 145 Uses dynamic DNS services 101->145 process24 signatures25 119 Tries to steal Instant Messenger accounts or passwords 66->119 121 Tries to steal Mail credentials (via file / registry access) 66->121 123 Searches for Windows Mail specific files 66->123 125 Tries to harvest and steal browser information (history, passwords, etc) 69->125
Score:
100%
Verdict:
Malware
File Type:
OFFICE
Link:
https://malprob.io/report/62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1/
Threat name:
Document-Excel.Exploit.CVE-2017-0199
Create hunting rule
Status:
Malicious
First seen:
2024-11-12 07:58:00 UTC
File Type:
Document
Extracted files:
77
AV detection:
12 of 38 (31.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mlv2z4ck5eo7a7lkznfy324jmdwiyqwcvthwgi7mvxxddwkrkhiq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
defense_evasion discovery execution
Link:
https://tria.ge/reports/241113-h6nrjszrgj/
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://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f
Malware Family:
n/a
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/423fa428-f48c-46be-bbb8-63ec556e22bc
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.76
Link:
https://yomi.yoroi.company/submissions/62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1

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
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:office_document_vba
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/
Rule name:XLS_STRINGS
Create hunting rule
Author:somedieyoungZZ
Description:Detect Strings targeting Bangladesh

File information

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

Comments