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Analysis Report Complaint_1713723004_04122021.xlsm

Overview

General Information

Sample Name:	Complaint_1713723004_04122021.xlsm
Analysis ID:	386500
MD5:	a4c21b67f5b8a52b143697fad19fadba
SHA1:	bdb665fe0760a6d568a269e0c792bf6a2284568b
SHA256:	254e090511681f16592a5afc242f0ded71c03a4a15292117f06a24aaad59fc19
Infos:
Most interesting Screenshot:

Detection

Hidden Macro 4.0

Score:	64
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 exploit detected (UrlDownloadToFile)

Found Excel 4.0 Macro with suspicious formulas

Allocates a big amount of memory (probably used for heap spraying)

Potential document exploit detected (unknown TCP traffic)

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Classification

Startup

System is w7x64

EXCEL.EXE (PID: 2384 cmdline: 'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding MD5: 5FB0A0F93382ECD19F5F499A5CAA59F0)

cleanup

Malware Configuration

No configs have been found

Yara Overview

No yara matches

Sigma Overview

No Sigma rule has matched

Signature Overview

Click to jump to signature section

Show All Signature Results

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:

Document exploit detected (UrlDownloadToFile)

Show sources

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

Source: excel.exe

Memory has grown: Private usage: 4MB later: 32MB

Source: global traffic

TCP traffic: 192.168.2.22:49167 -> 37.46.133.194:80

Source: global traffic	TCP traffic: 192.168.2.22:49167 -> 37.46.133.194:80
Source: global traffic	TCP traffic: 192.168.2.22:49169 -> 185.212.129.66:80

Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 37.46.133.194
Source: unknown	TCP traffic detected without corresponding DNS query: 185.212.129.66
Source: unknown	TCP traffic detected without corresponding DNS query: 185.212.129.66
Source: unknown	TCP traffic detected without corresponding DNS query: 185.212.129.66

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

File created: C:\Users\user\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\62042346.gif

Jump to behavior

System Summary:

Found malicious Excel 4.0 Macro

Show sources

Source: Complaint_1713723004_04122021.xlsm

Initial sample: urlmon

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

Show sources

Source: Screenshot number: 4	Screenshot OCR: Enable editing button from the yellow bar above 15 0 Once you have enabled editing, please click En
Source: Screenshot number: 4	Screenshot OCR: Enable Content button from the yellow bar above 16 17 18 19 20 21 22 ' 23 24 25 26 27 2
Source: Document image extraction number: 0	Screenshot OCR: Enable editing button from the yellow bar above Once you have enabled editing, please click Enabl
Source: Document image extraction number: 0	Screenshot OCR: Enable Content button from the yellow bar above
Source: Document image extraction number: 1	Screenshot OCR: Enable editing button from the yellow bar above Once you have enabled editing, please click Enabl
Source: Document image extraction number: 1	Screenshot OCR: Enable Content button from the yellow bar above

Found Excel 4.0 Macro with suspicious formulas

Show sources

Source: Complaint_1713723004_04122021.xlsm	Initial sample: EXEC
Source: Complaint_1713723004_04122021.xlsm	Initial sample: EXEC
Source: Complaint_1713723004_04122021.xlsm	Initial sample: EXEC

Source: classification engine

Classification label: mal64.expl.evad.winXLSM@1/7@0/2

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

File created: C:\Users\user\Desktop\~$Complaint_1713723004_04122021.xlsm

Jump to behavior

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

File created: C:\Users\user\AppData\Local\Temp\CVRD393.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: Complaint_1713723004_04122021.xlsm	Initial sample: OLE zip file path = xl/media/image1.gif
Source: Complaint_1713723004_04122021.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

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Scripting2	Path Interception	Extra Window Memory Injection1	Masquerading1	OS Credential Dumping	File and Directory Discovery1	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	Ingress Tool Transfer1	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Exploitation for Client Execution11	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Disable or Modify Tools1	LSASS Memory	System Information Discovery1	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Junk Data	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout
Domain Accounts	At (Linux)	Logon Script (Windows)	Logon Script (Windows)	Scripting2	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	Automated Exfiltration	Steganography	Exploit SS7 to Track Device Location	Obtain Device Cloud Backups	Delete Device Data
Local Accounts	At (Windows)	Logon Script (Mac)	Logon Script (Mac)	Extra Window Memory Injection1	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	Scheduled Transfer	Protocol Impersonation	SIM Card Swap		Carrier Billing Fraud

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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Analysis Report Complaint_1713723004_04122021.xlsm

Overview

General Information

Detection

Signatures

Classification

Startup

Malware Configuration

Yara Overview

Sigma Overview

Signature Overview

Compliance:

Software Vulnerabilities:

Networking:

System Summary:

Hooking and other Techniques for Hiding and Protection:

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails