Analysis Report document-143363659.xls

Overview

General Information

Sample Name:	document-143363659.xls
Analysis ID:	324302
MD5:	74bdbc9d1413b77ee917072acb6804a1
SHA1:	b1434c7a2a4163c7b0d8837e00315dc3327d14a2
SHA256:	ea3fafe9a5e2771adb636314b23765e263e263d4e3ad3d2a3fc0a96a5f689be5
Tags:	goziSilentBuilderursnifxls
Most interesting Screenshot:

Detection

Hidden Macro 4.0

Score:	72
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Document exploit detected (UrlDownloadToFile)

Document exploit detected (process start blacklist hit)

Found Excel 4.0 Macro with suspicious formulas

Found obfuscated Excel 4.0 Macro

Sigma detected: Microsoft Office Product Spawning Windows Shell

Yara detected hidden Macro 4.0 in Excel

Document contains embedded VBA macros

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)

Registers a DLL

Uses a known web browser user agent for HTTP communication

Yara signature match

Classification

Signatures

Software Vulnerabilities:

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

Document exploit detected (process start blacklist hit)

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

Process created: C:\Windows\System32\regsvr32.exe

Jump to behavior

Potential document exploit detected (performs DNS queries)

Source: global traffic

DNS query: name: ski-travel.pl

Potential document exploit detected (performs HTTP gets)

Source: global traffic

TCP traffic: 192.168.2.22:49167 -> 194.181.228.60:80

Potential document exploit detected (unknown TCP traffic)

Source: global traffic

TCP traffic: 192.168.2.22:49167 -> 194.181.228.60:80

Networking:

IP address seen in connection with other malware

Source: Joe Sandbox View

IP Address: 194.181.228.60 194.181.228.60

Uses a known web browser user agent for HTTP communication

Source: global traffic

HTTP traffic detected: GET /ds/231120.gif 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: ski-travel.plConnection: Keep-Alive

Source: global traffic

Source: unknown

DNS traffic detected: queries for: ski-travel.pl

Source: global traffic

HTTP traffic detected: HTTP/1.1 404 Not FoundConnection: Keep-AliveCache-Control: private, no-cache, no-store, must-revalidate, max-age=0Pragma: no-cacheContent-Type: text/htmlContent-Length: 1237Date: Sun, 29 Nov 2020 03:12:56 GMTServer: LiteSpeedData Raw: 3c 21 44 4f 43 54 59 50 45 20 68 74 6d 6c 3e 0a 3c 68 74 6d 6c 20 73 74 79 6c 65 3d 22 68 65 69 67 68 74 3a 31 30 30 25 22 3e 0a 3c 68 65 61 64 3e 0a 3c 6d 65 74 61 20 6e 61 6d 65 3d 22 76 69 65 77 70 6f 72 74 22 20 63 6f 6e 74 65 6e 74 3d 22 77 69 64 74 68 3d 64 65 76 69 63 65 2d 77 69 64 74 68 2c 20 69 6e 69 74 69 61 6c 2d 73 63 61 6c 65 3d 31 2c 20 73 68 72 69 6e 6b 2d 74 6f 2d 66 69 74 3d 6e 6f 22 20 3e 0a 3c 74 69 74 6c 65 3e 20 34 30 34 20 4e 6f 74 20 46 6f 75 6e 64 0d 0a 3c 2f 74 69 74 6c 65 3e 3c 2f 68 65 61 64 3e 0a 3c 62 6f 64 79 20 73 74 79 6c 65 3d 22 63 6f 6c 6f 72 3a 20 23 34 34 34 3b 20 6d 61 72 67 69 6e 3a 30 3b 66 6f 6e 74 3a 20 6e 6f 72 6d 61 6c 20 31 34 70 78 2f 32 30 70 78 20 41 72 69 61 6c 2c 20 48 65 6c 76 65 74 69 63 61 2c 20 73 61 6e 73 2d 73 65 72 69 66 3b 20 68 65 69 67 68 74 3a 31 30 30 25 3b 20 62 61 63 6b 67 72 6f 75 6e 64 2d 63 6f 6c 6f 72 3a 20 23 66 66 66 3b 22 3e 0a 3c 64 69 76 20 73 74 79 6c 65 3d 22 68 65 69 67 68 74 3a 61 75 74 6f 3b 20 6d 69 6e 2d 68 65 69 67 68 74 3a 31 30 30 25 3b 20 22 3e 20 20 20 20 20 3c 64 69 76 20 73 74 79 6c 65 3d 22 74 65 78 74 2d 61 6c 69 67 6e 3a 20 63 65 6e 74 65 72 3b 20 77 69 64 74 68 3a 38 30 30 70 78 3b 20 6d 61 72 67 69 6e 2d 6c 65 66 74 3a 20 2d 34 30 30 70 78 3b 20 70 6f 73 69 74 69 6f 6e 3a 61 62 73 6f 6c 75 74 65 3b 20 74 6f 70 3a 20 33 30 25 3b 20 6c 65 66 74 3a 35 30 25 3b 22 3e 0a 20 20 20 20 20 20 20 20 3c 68 31 20 73 74 79 6c 65 3d 22 6d 61 72 67 69 6e 3a 30 3b 20 66 6f 6e 74 2d 73 69 7a 65 3a 31 35 30 70 78 3b 20 6c 69 6e 65 2d 68 65 69 67 68 74 3a 31 35 30 70 78 3b 20 66 6f 6e 74 2d 77 65 69 67 68 74 3a 62 6f 6c 64 3b 22 3e 34 30 34 3c 2f 68 31 3e 0a 3c 68 32 20 73 74 79 6c 65 3d 22 6d 61 72 67 69 6e 2d 74 6f 70 3a 32 30 70 78 3b 66 6f 6e 74 2d 73 69 7a 65 3a 20 33 30 70 78 3b 22 3e 4e 6f 74 20 46 6f 75 6e 64 0d 0a 3c 2f 68 32 3e 0a 3c 70 3e 54 68 65 20 72 65 73 6f 75 72 63 65 20 72 65 71 75 65 73 74 65 64 20 63 6f 75 6c 64 20 6e 6f 74 20 62 65 20 66 6f 75 6e 64 20 6f 6e 20 74 68 69 73 20 73 65 72 76 65 72 21 3c 2f 70 3e 0a 3c 2f 64 69 76 3e 3c 2f 64 69 76 3e 3c 64 69 76 20 73 74 79 6c 65 3d 22 63 6f 6c 6f 72 3a 23 66 30 66 30 66 30 3b 20 66 6f 6e 74 2d 73 69 7a 65 3a 31 32 70 78 3b 6d 61 72 67 69 6e 3a 61 75 74 6f 3b 70 61 64 64 69 6e 67 3a 30 70 78 20 33 30 70 78 20 30 70 78 20 33 30 70 78 3b 70 6f 73 69 74 69 6f 6e 3a 72 65 6c 61 74 69 76 65 3b 63 6c 65 61 72 3a 62 6f 74 68 3b 68 65 69 67 68 74 3a 31 30 30 70 78 3b 6d 61 72 67 69 6e 2d 74 6f 70 3a 2d 31 30 31 70 78 3b 62 61 63 6b 67 72 6f 75 6e 64 2d 63 6f 6c 6f 72 3a 23 34 37 34 37 34 37 3b 62 6f 72 64 65 72 2d 74 6f 70 3a 20 31 70 78 20 73 6f 6c 69 64 20 72 67 62 61 28 30 2c 30 2c 30 2c 30 2e 31 35 29 3b 62 6f 78 2d 73 68 61 64 6f 77 3a 20 30 20 31 70 78 20 30 20 7

Source: regsvr32.exe, 00000003.00000002.2092624557.0000000001D60000.00000002.00000001.sdmp	String found in binary or memory: http://servername/isapibackend.dll
Source: document-143363659.xls	String found in binary or memory: http://ski-travel.pl/ds/231120.gif

System Summary:

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Source: Screenshot number: 4

Screenshot OCR: Enable Content X J7 - (" X 0' jR I" A A B C D E F G H I K L M N O P Q R S T : 1 2 3 4 5 6

Found Excel 4.0 Macro with suspicious formulas

Source: document-143363659.xls	Initial sample: CALL
Source: document-143363659.xls	Initial sample: CALL
Source: document-143363659.xls	Initial sample: CALL
Source: document-143363659.xls	Initial sample: CALL
Source: document-143363659.xls	Initial sample: EXEC

Found obfuscated Excel 4.0 Macro

Source: document-143363659.xls

Initial sample: High usage of CHAR() function: 18

Document contains embedded VBA macros

Source: document-143363659.xls

OLE indicator, VBA macros: true

Yara signature match

Source: document-143363659.xls, type: SAMPLE

Matched rule: SUSP_Excel4Macro_AutoOpen date = 2020-03-26, author = John Lambert @JohnLaTwC, description = Detects Excel4 macro use with auto open / close, score = 2fb198f6ad33d0f26fb94a1aa159fef7296e0421da68887b8f2548bbd227e58f

Source: classification engine

Classification label: mal72.expl.evad.winXLS@3/5@1/1

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

File created: C:\Users\user\Desktop\40EE0000

Jump to behavior

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

File created: C:\Users\user\AppData\Local\Temp\CVRD642.tmp

Jump to behavior

Source: document-143363659.xls

OLE indicator, Workbook stream: true

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

File read: C:\Users\desktop.ini

Jump to behavior

Source: C:\Windows\System32\regsvr32.exe

Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Source: unknown	Process created: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE 'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding
Source: unknown	Process created: C:\Windows\System32\regsvr32.exe regsvr32 -s C:\giogti\mpomqr\fwpxeohi.dll
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process created: C:\Windows\System32\regsvr32.exe regsvr32 -s C:\giogti\mpomqr\fwpxeohi.dll	Jump to behavior

Source: Window Recorder

Window detected: More than 3 window changes detected

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

Data Obfuscation:

Registers a DLL

Source: unknown

Process created: C:\Windows\System32\regsvr32.exe regsvr32 -s C:\giogti\mpomqr\fwpxeohi.dll

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
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

HIPS / PFW / Operating System Protection Evasion:

Yara detected hidden Macro 4.0 in Excel

Source: Yara match

File source: document-143363659.xls, type: SAMPLE

Screenshots

Behavior Graph

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

Network Map

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
194.181.228.60	unknown	Poland		8308	NASK-COMMERCIALPL	false

Contacted Domains

Name	IP	Active
ski-travel.pl	194.181.228.60	true

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
http://ski-travel.pl/ds/231120.gif	false	URL Reputation: safe URL Reputation: safe URL Reputation: safe	unknown

ID:	324302
Product:	CloudBasic
Start time:	04:12:01
Start date:	29.11.2020
Sample:	document-143363659.xls
Cookbook:	defaultwindowsofficecookbook.jbs
System description:	Windows 7 x64 SP1 with Office 2010 SP2 (IE 11, FF52, Chrome 57, Adobe Reader DC 15, Flash 25.0.0.127, Java 8 Update 121, .NET 4.6.2)
Architecture:	WINDOWS
MD5:	74bdbc9d1413b77ee917072acb6804a1
SHA1:	b1434c7a2a4163c7b0d8837e00315dc3327d14a2
SHA256:	ea3fafe9a5e2771adb636314b23765e263e263d4e3ad3d2a3fc0a96a5f689be5
Filetype:	Microsoft Excel sheet (30009/1) 78.94%

Name	Type	MD5	SHA1	SHA256
C:\Users\user\AppData\Local\Temp\7EDE0000	data	6C2D48B6D81174FB43689BD646FF02C7	21A91628A18332923635323E3242A84705575BDE	50EDF005A4361E9D5DFD365DB7165BCA4CF733CD59D0194B8F4A8F914304CC00
C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\Desktop.LNK	MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Read-Only, Directory, ctime=Tue Oct 17 10:04:00 2017, mtime=Sun Nov 29 11:12:42 2020, atime=Sun Nov 29 11:12:42 2020, length=8192, window=hide	12BCA8014CAA06B8585006214B53BE98	B0A2D2F9249B5A39AA7B93954CFDC91C34C53B19	284DCD8077E2C38CAFAD3B79576FC909756ED60AA0CE0333B600FB9F21D35835
C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\document-143363659.LNK	MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Archive, ctime=Wed Aug 26 14:08:13 2020, mtime=Sun Nov 29 11:12:42 2020, atime=Sun Nov 29 11:12:42 2020, length=338432, window=hide	C53C1BF991176EF8E90F153AD8E37F7E	11C2BFEB1437D65990B8089A99F40385FC54D453	0C722E3597A26A1755E4746A37F5198E8AA440B848B86B3CB14EBF74BFCA0436
C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\index.dat	ASCII text, with CRLF line terminators	D9D785836017C7492C7D7B638AA0A837	B7197A598EC527ADF46028B7E7837EE182A351C0	474E944E82BF60E74D36A829F7E550598DF72BB9B43028BD073A7B3EA1A40FAB
C:\Users\user\Desktop\40EE0000	Applesoft BASIC program data, first line number 16	8100726759C974356BD81B61E1D28D29	5C98B9DCBDF40B9F44DA56ECBDCAF3A99ED95342	21E15C241905871C61255ACDBAA61D146F1F67ED329FD0B0AF7FA2709E2F66C9

Analysis Report document-143363659.xls

Overview

General Information

Detection

Signatures

Classification

Signatures

Software Vulnerabilities:

Networking:

System Summary:

Data Obfuscation:

Hooking and other Techniques for Hiding and Protection:

HIPS / PFW / Operating System Protection Evasion:

Screenshots

Behavior Graph

Network Map

Contacted Public IPs

Contacted Domains

Contacted URLs