MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b82acfb193e00c6506c2712e7d7a15e875e0f37b9a964c689c926c79d459d81d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
Formbook
Vendor detections: 11
| SHA256 hash: | b82acfb193e00c6506c2712e7d7a15e875e0f37b9a964c689c926c79d459d81d |
|---|---|
| SHA3-384 hash: | 5fd937c1f0f2789f31ae7e2d372437c9a3b9609155c07f809739314d44de3de30a217a3657eed1676c8da39a2d5cd38a |
| SHA1 hash: | 9e32476d35becabcdb435eb1dfe26fa50dd25318 |
| MD5 hash: | 047fef24cc2235db39d3eb1551be28bf |
| humanhash: | winner-idaho-double-georgia |
| File name: | 047fef24cc2235db39d3eb1551be28bf |
| Download: | download sample |
| Signature | Formbook |
| File size: | 26'178 bytes |
| First seen: | 2023-05-17 12:44:36 UTC |
| Last seen: | 2023-05-18 13:36:46 UTC |
| File type: |  rtf |
| MIME type: | text/rtf |
| ssdeep | 768:ikFFh6lZxzhhPGF6R0HVQ16uMlJxD9Wb17Gc9rWV:iuhk3zfW1QUHlJxDKJt9rw |
| TLSH | T1E3C209965B8C4C61E259E8BB424DA00E19FCF63630C355C4BD9DE2B47B3D14E4B6B2B8 |
| Reporter |  zbetcheckin |
| Tags: | CVE-2017-11882 FormBook rtf |
Intelligence
File Origin
# of uploads :
3
# of downloads :
111
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
047fef24cc2235db39d3eb1551be28bf
Verdict:
Malicious activity
Analysis date:
2023-05-17 12:48:02 UTC
Tags:
opendir exploit cve-2017-11882 loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Sending a custom TCP request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-05-16 14:46:06 UTC
File Type:
Document
Extracted files:
4
AV detection:
13 of 24 (54.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
n/a
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Process spawned unexpected child process
Malware family:
XLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | INDICATOR_RTF_MalVer_Objects |
|---|---|
| Author: | ditekSHen |
| Description: | Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents. |
| Rule name: | SUSP_INDICATOR_RTF_MalVer_Objects |
|---|---|
| Author: | ditekSHen |
| Description: | Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents. |
| Reference: | https://github.com/ditekshen/detection |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
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