MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e. 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: 14


Maldoc score: 4


Intelligence 14 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e
SHA3-384 hash: 2a29ae0d5be0add747c8808c548587bb969c358bb494d8bf0c6d59275683394ffdef41125f37e0515fd5608d7d27b48f
SHA1 hash: c89080debfc2b17d614a148b61df22cef919365f
MD5 hash: b827538f569cc59ebb00fd2aa6847c92
humanhash: ack-quebec-bravo-delta
File name:SecuriteInfo.com.Exploit.Siggen3.44196.10663.31208
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:249'344 bytes
First seen:2023-12-20 00:35:38 UTC
Last seen:2023-12-20 01:16:39 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 6144:bmP4Y35qAOJl/YrLYz+WrNhZF+E+fgL+0dD8ivSbVQoMIwymAdbPS8X/ut:bcV3bVQoMIxhP9u
TLSH T11834C051FE81860AE855437189F78FAA6325FC415F924B0F321CF72D3DF42A46D2BA62
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)
Reporter SecuriteInfoCom
Tags:cve-2017-0199 RemcosRAT xlsx

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 19 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
499 bytesMBD0015E69A/CompObj
518928 bytesMBD0015E69A/Package
6114 bytesMBD0015E69B/CompObj
7708 bytesMBD0015E69B/DocumentSummaryInformation
823248 bytesMBD0015E69B/SummaryInformation
997808 bytesMBD0015E69B/Workbook
10606 bytesMBD0015E69C/Ole
1190464 bytesWorkbook
12521 bytes_VBA_PROJECT_CUR/PROJECT
13104 bytes_VBA_PROJECT_CUR/PROJECTwm
14977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
15977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
16977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
17985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
182644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
19553 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 :
2
# of downloads :
534
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e.zip
Verdict:
No threats detected
Analysis date:
2023-12-20 03:48:15 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/35d9d4a7-e873-4089-8d65-ca67fc0486e1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/468580/
Detection(s):
SecuriteInfo.com.Exploit.Siggen3.44196.10663.31208.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a file
DNS request
Sending a custom TCP request
Creating a file in the %AppData% directory
Sending an HTTP GET request
Unauthorized injection to a recently created process
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e/results/dashboard
Payload URLs
URL
File name
http://85.195.105.118/mjg/Microsoftencryptedentirepcfileforprotectfilefromthesecuritybreachfromtheoutsideconnectons.Doc
Embedded Ole
Behaviour
SuspiciousRTF detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
91%
Tags:
macros sload
Link:
https://www.filescan.io/uploads/658236f2b855eb3693e76050/reports/d1088b76-8dad-4018-b726-b4e6101e518e/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e
Label:
Benign
Suspicious Score:
4.2/10
Score Malicious:
43%
Score Benign:
57%
Link:
https://www.malware.ai/gui/files/?id=3dd0de89-75f1-44d4-800b-4866760c477b
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1364864
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to inject code into remote processes
Contains functionality to modify clipboard data
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
Delayed program exit found
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Document embeds suspicious OLE2 link
Excel sheet contains many unusual embedded objects
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Office viewer loads remote template
Searches for Windows Mail specific files
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Remcos
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)
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: 1364864 Sample: SecuriteInfo.com.Exploit.Si... Startdate: 20/12/2023 Architecture: WINDOWS Score: 100 69 Multi AV Scanner detection for domain / URL 2->69 71 Found malware configuration 2->71 73 Malicious sample detected (through community Yara rule) 2->73 75 17 other signatures 2->75 9 EQNEDT32.EXE 12 2->9         started        13 cxhqm.exe 2->13         started        15 WINWORD.EXE 345 47 2->15         started        17 2 other processes 2->17 process3 dnsIp4 45 C:\Users\user\AppData\Roaming\wlanext.exe, PE32 9->45 dropped 47 C:\Users\user\AppData\...\wlanext[1].exe, PE32 9->47 dropped 89 Office equation editor establishes network connection 9->89 91 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 9->91 20 wlanext.exe 18 9->20         started        93 Antivirus detection for dropped file 13->93 95 Multi AV Scanner detection for dropped file 13->95 97 Contains functionality to bypass UAC (CMSTPLUA) 13->97 107 8 other signatures 13->107 24 cxhqm.exe 13->24         started        49 C:\Users\user\...\mjg on 85.195.105.118.url, MS 15->49 dropped 51 Microsoftencrypted...econnectons.Doc.url, MS 15->51 dropped 53 ~WRF{4E5AB3F8-26B8...3-CA19F5CBF6BC}.tmp, Composite 15->53 dropped 55 C:\Users\user\AppData\Local\...\7C081889.doc, Non-ISO 15->55 dropped 99 Microsoft Office launches external ms-search protocol handler (WebDAV) 15->99 101 Office viewer loads remote template 15->101 103 Microsoft Office drops suspicious files 15->103 65 85.195.105.118, 49162, 49163, 49164 GODADDYDE Germany 17->65 57 Microsoftencrypted...deconnectons[1].doc, Non-ISO 17->57 dropped 105 Maps a DLL or memory area into another process 17->105 26 cxhqm.exe 17->26         started        file5 signatures6 process7 file8 43 C:\Users\user\AppData\Local\...\ycuhwzek.exe, PE32 20->43 dropped 85 Multi AV Scanner detection for dropped file 20->85 87 Machine Learning detection for dropped file 20->87 28 ycuhwzek.exe 1 2 20->28         started        signatures9 process10 file11 59 C:\Users\user\AppData\Roaming\...\cxhqm.exe, PE32 28->59 dropped 109 Antivirus detection for dropped file 28->109 111 Multi AV Scanner detection for dropped file 28->111 113 Contains functionality to bypass UAC (CMSTPLUA) 28->113 115 12 other signatures 28->115 32 ycuhwzek.exe 3 10 28->32         started        signatures12 process13 dnsIp14 61 grantadistciaret.com 91.92.252.51, 3212, 49170, 49171 THEZONEBG Bulgaria 32->61 63 geoplugin.net 178.237.33.50, 49172, 80 ATOM86-ASATOM86NL Netherlands 32->63 67 Maps a DLL or memory area into another process 32->67 36 ycuhwzek.exe 1 32->36         started        39 ycuhwzek.exe 1 32->39         started        41 ycuhwzek.exe 11 32->41         started        signatures15 process16 signatures17 77 Tries to steal Instant Messenger accounts or passwords 36->77 79 Tries to steal Mail credentials (via file / registry access) 36->79 81 Searches for Windows Mail specific files 36->81 83 Tries to harvest and steal browser information (history, passwords, etc) 39->83
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e/
Threat name:
Document-Office.Exploit.CVE-2017-0199
Create hunting rule
Status:
Malicious
First seen:
2023-12-19 08:33:26 UTC
File Type:
Document
Extracted files:
44
AV detection:
8 of 37 (21.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pnuwgy2oqv22z7pevyvwvz7jjvgdenx5zawhao5l2wcz5a7jwoha._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:grace collection persistence rat spyware stealer
Link:
https://tria.ge/reports/231220-axxdbscedr/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Abuses OpenXML format to download file from external location
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
grantadistciaret.com:3212
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7b6963634e85/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/7b6963634e8575acfde4ae2b6ae7e94d4c3236fdc82c703babd5859e83e9b38e

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/468580/

Comments