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Windows
Analysis Report
Revised RFQ-PO180911.doc
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Sigma detected: EQNEDT32.EXE connecting to internet
Multi AV Scanner detection for submitted file
Yara detected FormBook
Initial sample is an obfuscated RTF file
Malicious sample detected (through community Yara rule)
System process connects to network (likely due to code injection or exploit)
Sigma detected: File Dropped By EQNEDT32EXE
Antivirus detection for URL or domain
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Injects a PE file into a foreign processes
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Office equation editor drops PE file
Queues an APC in another process (thread injection)
Tries to detect virtualization through RDTSC time measurements
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Office equation editor establishes network connection
Yara signature match
Antivirus or Machine Learning detection for unpacked file
Contains functionality to check if a debugger is running (IsDebuggerPresent)
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
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Found evasive API chain (may stop execution after checking a module file name)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to call native functions
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
Document misses a certain OLE stream usually present in this Microsoft Office document type
Document contains Microsoft Equation 3.0 OLE entries
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
Dropped file seen in connection with other malware
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
- System is w7x64
- WINWORD.EXE (PID: 2068 cmdline:
"C:\Progra m Files\Mi crosoft Of fice\Offic e14\WINWOR D.EXE" /Au tomation - Embedding MD5: 9EE74859D22DAE61F1750B3A1BACB6F5)
- EQNEDT32.EXE (PID: 1544 cmdline:
"C:\Progra m Files\Co mmon Files \Microsoft Shared\EQ UATION\EQN EDT32.EXE" -Embeddin g MD5: A87236E214F6D42A65F5DEDAC816AEC8) - word.exe (PID: 1988 cmdline:
C:\Users\u ser\AppDat a\Roaming\ word.exe MD5: C6E799EEEBA0345DE98B4E9A6AC76B82) - dvukljmnr.exe (PID: 2844 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\dvukljm nr.exe C:\ Users\user \AppData\L ocal\Temp\ xxsjdcnfw MD5: 9CECB9E88C1FF3D7A4FFC8BFEB27C2E1) - dvukljmnr.exe (PID: 940 cmdline:
C:\Users\u ser\AppDat a\Local\Te mp\dvukljm nr.exe C:\ Users\user \AppData\L ocal\Temp\ xxsjdcnfw MD5: 9CECB9E88C1FF3D7A4FFC8BFEB27C2E1) - explorer.exe (PID: 1860 cmdline:
C:\Windows \Explorer. EXE MD5: 38AE1B3C38FAEF56FE4907922F0385BA)
- cleanup
{"C2 list": ["www.rthearts.com/nk6l/"], "decoy": ["cbnextra.com", "entitysystemsinc.com", "55midwoodave.com", "ebelizzi.com", "khojcity.com", "1527brokenoakdrive.site", "housinghproperties.com", "ratiousa.com", "lrcrepresentacoes.net", "tocoec.net", "khadamatdemnate.com", "davidkastner.xyz", "gardeniaresort.com", "qiantangguoji.com", "visaprepaidprocessinq.com", "cristinamadara.com", "semapisus.xyz", "mpwebagency.net", "alibabasdeli.com", "gigasupplies.com", "quantumskillset.com", "eajui136.xyz", "patsanchezelpaso.com", "trined.mobi", "amaturz.info", "approveprvqsx.xyz", "fronterapost.house", "clairewashere.site", "xn--3jst70hg8f.com", "thursdaynightthriller.com", "primacykapjlt.xyz", "vaginette.site", "olitusd.com", "paypal-caseid521.com", "preose.xyz", "ferbsqlv28.club", "iffiliatefreedom.com", "okdahotel.com", "cochuzyan.xyz", "hotyachts.net", "diamond-beauties.com", "storyofsol.com", "xianshucai.net", "venusmedicalarts.com", "energiaorgonu.com", "savannah.biz", "poeticdaily.com", "wilddalmatian.com", "kdydkyqksqucyuyen.com", "meanmod.xyz", "kaka.digital", "viewcision.com", "wowzerbackupandrestore-us.com", "hydrogendatapower.com", "427521.com", "ponto-bras.space", "chevalsk.com", "hnftdl.com", "nanasyhogar.com", "createacarepack.com", "wildkraeuter-wochenende.com", "uchihomedeco.com", "quintongiang.com", "mnbvending.com"]}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
INDICATOR_RTF_MalVer_Objects | Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents. | ditekSHen |
|
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
| |
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Click to see the 28 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
| |
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
| |
Click to see the 8 entries |
Exploits |
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Source: | Author: Joe Security: |
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⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Exploits |
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Source: | Stream path '_1715191568/\x1CompObj' : |
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Source: | Code function: | 4_2_00405426 | |
Source: | Code function: | 4_2_00405D9C | |
Source: | Code function: | 4_2_004026A1 |
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