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Windows Analysis Report DHLExpress.xlsx
Overview
General Information
| Sample Name: | DHLExpress.xlsx |
| Analysis ID: | 553114 |
| MD5: | 2b9a745d1c8ffca624c71ca72c0534dd |
| SHA1: | ec28b316b4fab0a9432b013a550f3bbdbff69b92 |
| SHA256: | 2174bb3aa9e77eecd21ad4b0fdd340a034db7c815da7a7c9d51d288777984718 |
| Tags: | DHLVelvetSweatshopxlsx |
| Infos: | |
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Most interesting Screenshot:  |
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Detection
FormBook
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Found malware configuration
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Sigma detected: EQNEDT32.EXE connecting to internet
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
Sigma detected: Droppers Exploiting CVE-2017-11882
System process connects to network (likely due to code injection or exploit)
Sigma detected: File Dropped By EQNEDT32EXE
Antivirus detection for URL or domain
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Performs DNS queries to domains with low reputation
Injects a PE file into a foreign processes
Sigma detected: Execution from Suspicious Folder
Office equation editor drops PE file
Queues an APC in another process (thread injection)
Tries to detect virtualization through RDTSC time measurements
Machine Learning detection for dropped file
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Drops PE files to the user root directory
Yara signature match
Antivirus or Machine Learning detection for unpacked file
Contains functionality to query locales information (e.g. system language)
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Potential document exploit detected (performs DNS queries)
HTTP GET or POST without a user agent
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Downloads executable code via HTTP
Contains functionality for execution timing, often used to detect debuggers
Enables debug privileges
Potential document exploit detected (unknown TCP traffic)
Drops PE files
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Office Equation Editor has been started
Checks if the current process is being debugged
Drops PE files to the user directory
Found large amount of non-executed APIs
Potential document exploit detected (performs HTTP gets)
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality for read data from the clipboard
Classification
AV Detection: |
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| Found malware configuration |
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| Multi AV Scanner detection for submitted file |
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| Yara detected FormBook |
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| Antivirus detection for URL or domain |
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| Machine Learning detection for dropped file |
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| Antivirus or Machine Learning detection for unpacked file |
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Exploits: |
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| Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) |
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| Office Equation Editor has been started |
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Code function: |
4_2_00405D7C | |
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4_2_004053AA | |
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4_2_00402630 | |
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Code function: |
7_2_4A3E0202 | |
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7_2_4A3C2E73 | |
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7_2_4A3C6E47 | |
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7_2_4A3DBF0C | |
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7_2_4A3CBBA4 | |
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7_2_4A3E0492 | |
Software Vulnerabilities: |
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| Potential document exploit detected (performs DNS queries) |
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| Potential document exploit detected (unknown TCP traffic) |
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| Potential document exploit detected (performs HTTP gets) |
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Networking: |
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| Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) |
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| System process connects to network (likely due to code injection or exploit) |
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| Performs DNS queries to domains with low reputation |
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| C2 URLs / IPs found in malware configuration |
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| Internet Provider seen in connection with other malware |
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| HTTP GET or POST without a user agent |
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| IP address seen in connection with other malware |
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| Downloads executable code via HTTP |
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