Analysis Report Documents_1605962083_895739149.xlsm

Overview

General Information

Sample Name: Documents_1605962083_895739149.xlsm
Analysis ID: 382679
MD5: 77941203a3ef209ec6b53d47f0b6d5c0
SHA1: a2c4f211a8007a6c1def18ab10722edd235a5a70
SHA256: 05ec137601fe0cb3bb5605a55df59e9e03cff966b43e545910cd12030bfca456
Infos:

Most interesting Screenshot:

Detection

Hidden Macro 4.0
Score: 64
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus detection for URL or domain
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Document exploit detected (UrlDownloadToFile)
Found Excel 4.0 Macro with suspicious formulas
Excel documents contains an embedded macro which executes code when the document is opened
IP address seen in connection with other malware
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Uses a known web browser user agent for HTTP communication

Classification

AV Detection:

barindex
Antivirus detection for URL or domain
Source: http://sankhyasol.com/field.php Avira URL Cloud: Label: malware
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior

Software Vulnerabilities:

barindex
Document exploit detected (UrlDownloadToFile)
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Section loaded: \KnownDlls\api-ms-win-downlevel-shlwapi-l2-1-0.dll origin: URLDownloadToFileA Jump to behavior
Potential document exploit detected (performs DNS queries)
Source: global traffic DNS query: name: sankhyasol.com
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 148.66.138.148:80
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 148.66.138.148:80

Networking:

barindex
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 148.66.138.148 148.66.138.148
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /field.php HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: sankhyasol.comConnection: Keep-Alive
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\6F6F568D.png Jump to behavior
Source: global traffic HTTP traffic detected: GET /field.php HTTP/1.1Accept: */*UA-CPU: AMD64Accept-Encoding: gzip, deflateUser-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Win64; x64; Trident/7.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)Host: sankhyasol.comConnection: Keep-Alive
Source: unknown DNS traffic detected: queries for: sankhyasol.com

System Summary:

barindex
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Source: Screenshot number: 4 Screenshot OCR: Enable Editing U the decryption of the document. U SecurityWarning Macros have been disabled. E
Source: Screenshot number: 4 Screenshot OCR: Enable content" to oerform M"crosoft Off"ce Decrvot"on Core to start V Q R S m' ^ Enable Editing
Source: Document image extraction number: 2 Screenshot OCR: Enable editing" to unlock the editing document downloaded from the internet. Protected View This fi
Source: Document image extraction number: 2 Screenshot OCR: Enable content" to perform Microsoft Office Decryption Core to start the decryption of the document
Source: Document image extraction number: 3 Screenshot OCR: Enable Content
Source: Document image extraction number: 4 Screenshot OCR: Enable Editing
Source: Document image extraction number: 13 Screenshot OCR: Enable editing" to unlock the editing document downloaded from the Internet. Protected View This fi
Source: Document image extraction number: 13 Screenshot OCR: Enable content" to perform Microsoft Office Decryption Core to start the decryption of the document
Found Excel 4.0 Macro with suspicious formulas
Source: Documents_1605962083_895739149.xlsm Initial sample: CALL
Source: Documents_1605962083_895739149.xlsm Initial sample: CALL
Excel documents contains an embedded macro which executes code when the document is opened
Source: workbook.xml Binary string: " sheetId="1" r:id="rId1"/><sheet name="Docs1" sheetId="2" r:id="rId2"/><sheet name="Docs2" sheetId="3" r:id="rId3"/><sheet name="Docs3" sheetId="4" r:id="rId4"/><sheet name="Docs4" sheetId="5" r:id="rId5"/></sheets><definedNames><definedName name="_xlnm.Auto_Open">Docs2!$BA$11</definedName></definedNames><calcPr calcId="0"/></workbook>
Source: classification engine Classification label: mal64.expl.evad.winXLSM@1/13@1/1
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Desktop\~$Documents_1605962083_895739149.xlsm Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVRCC43.tmp Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image5.png
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image6.png
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image4.png
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image2.png
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image3.png
Source: Documents_1605962083_895739149.xlsm Initial sample: OLE zip file path = xl/media/image1.png
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
windows-stand
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 382679 Sample: Documents_1605962083_895739... Startdate: 06/04/2021 Architecture: WINDOWS Score: 64 14 Antivirus detection for URL or domain 2->14 16 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->16 18 Found Excel 4.0 Macro with suspicious formulas 2->18 5 EXCEL.EXE 86 50 2->5         started        process3 dnsIp4 12 sankhyasol.com 148.66.138.148, 49165, 80 AS-26496-GO-DADDY-COM-LLCUS Singapore 5->12 10 C:\...\~$Documents_1605962083_895739149.xlsm, data 5->10 dropped 20 Document exploit detected (UrlDownloadToFile) 5->20 file5 signatures6
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
148.66.138.148
 sankhyasol.com Singapore
26496 AS-26496-GO-DADDY-COM-LLCUS false

Contacted Domains

Name IP Active
sankhyasol.com 148.66.138.148 true

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://sankhyasol.com/field.php true
  • Avira URL Cloud: malware
 unknown