Analysis Report Outstanding-Debt-1636503299-05042021.xlsm

Overview

General Information

Sample Name: Outstanding-Debt-1636503299-05042021.xlsm
Analysis ID: 404076
MD5: 770ec8230138bb271c449bdaf5da519b
SHA1: 21a0bde033c46eab8d42e5b6d9431f52f5c6ce48
SHA256: 43c9954c68907acc1f1a6e7d5cc90a3043f9da1c8416b079d182865abea734c7
Tags: xlsm
Infos:

Most interesting Screenshot:

Detection

Hidden Macro 4.0
Score: 68
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malicious Excel 4.0 Macro
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Document contains an embedded VBA macro which may execute processes
Document exploit detected (UrlDownloadToFile)
Found Excel 4.0 Macro with suspicious formulas
Allocates a big amount of memory (probably used for heap spraying)
Document contains an embedded VBA macro which executes code when the document is opened / closed
Document contains embedded VBA macros
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

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
Allocates a big amount of memory (probably used for heap spraying)
Source: excel.exe Memory has grown: Private usage: 4MB later: 35MB
Potential document exploit detected (performs HTTP gets)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 91.211.91.81:80
Potential document exploit detected (unknown TCP traffic)
Source: global traffic TCP traffic: 192.168.2.22:49165 -> 91.211.91.81:80

Networking:

barindex
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 91.211.91.81Connection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 5.34.179.36Connection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 45.153.229.23Connection: Keep-Alive
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 45.153.229.23
Source: unknown TCP traffic detected without corresponding DNS query: 5.34.179.36
Source: unknown TCP traffic detected without corresponding DNS query: 91.211.91.81
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\31B3C273.jpg Jump to behavior
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 91.211.91.81Connection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 5.34.179.36Connection: Keep-Alive
Source: global traffic HTTP traffic detected: GET /44313,6048108796.dat 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: 45.153.229.23Connection: Keep-Alive

System Summary:

barindex
Found malicious Excel 4.0 Macro
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: urlmon
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 button from the yellow bar above 22 0 Once you have enabled editing please click Ena
Source: Screenshot number: 4 Screenshot OCR: Enable Content button from the yellow bar above 23 24 25 26 27 28 29 30 31 32 33 34 35
Document contains an embedded VBA macro which may execute processes
Source: VBA code instrumentation OLE, VBA macro: Module Blasr, Function Auto_Open, API Microsoft Excel:Application.Run(:Range) Name: Auto_Open
Found Excel 4.0 Macro with suspicious formulas
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: EXEC
Document contains an embedded VBA macro which executes code when the document is opened / closed
Source: Outstanding-Debt-1636503299-05042021.xlsm OLE, VBA macro line: Private Sub Auto_Open()
Source: VBA code instrumentation OLE, VBA macro: Module Blasr, Function Auto_Open Name: Auto_Open
Document contains embedded VBA macros
Source: Outstanding-Debt-1636503299-05042021.xlsm OLE indicator, VBA macros: true
Source: classification engine Classification label: mal68.expl.evad.winXLSM@1/8@0/3
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\Desktop\~$Outstanding-Debt-1636503299-05042021.xlsm Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File created: C:\Users\user\AppData\Local\Temp\CVRD345.tmp Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Window found: window name: SysTabControl32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: OLE zip file path = xl/media/image1.jpg
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: OLE zip file path = xl/drawings/drawing2.xml
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: OLE zip file path = xl/worksheets/_rels/sheet2.xml.rels
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: OLE zip file path = xl/drawings/_rels/drawing2.xml.rels
Source: Outstanding-Debt-1636503299-05042021.xlsm Initial sample: OLE zip file path = xl/printerSettings/printerSettings2.bin
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
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Process information set: NOOPENFILEERRORBOX Jump to behavior
  • 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
91.211.91.81
unknown Ukraine
206638 HOSTFORYUA false
5.34.179.36
unknown Ukraine
204957 GREENFLOID-ASUA false
45.153.229.23
unknown Russian Federation
25229 VOLIA-ASUA false

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://45.153.229.23/44313,6048108796.dat false
  • 5%, Virustotal, Browse
  • Avira URL Cloud: safe
unknown
http://5.34.179.36/44313,6048108796.dat false
  • 3%, Virustotal, Browse
  • Avira URL Cloud: safe
unknown
http://91.211.91.81/44313,6048108796.dat false
  • 5%, Virustotal, Browse
  • Avira URL Cloud: safe
unknown