MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4fe0591d0c5bd1f27e2a384aa171139b371847c545e9eae6e7bc6269a954a58b. 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: 13
| SHA256 hash: | 4fe0591d0c5bd1f27e2a384aa171139b371847c545e9eae6e7bc6269a954a58b |
|---|---|
| SHA3-384 hash: | 1d23b129cfaa2814bcc46dec13662e18d6a8de6be3dfe784350504225bd4e75abfd70f66cdc855049f8990ad1f8af407 |
| SHA1 hash: | 945fc5d51604afd6e92c84fac68e336680d37abc |
| MD5 hash: | 8f6f20b9800cc3739e08c986979fe886 |
| humanhash: | november-low-august-march |
| File name: | 8f6f20b9800cc3739e08c986979fe886 |
| Download: | download sample |
| Signature | Formbook |
| File size: | 28'296 bytes |
| First seen: | 2023-06-08 05:30:02 UTC |
| Last seen: | Never |
| File type: |  rtf |
| MIME type: | text/rtf |
| ssdeep | 768:DHe6wuA/+TFngTG1tl2qGOQP0u2kPdU8S7C5G3fljgBQ/sp:DHOuA/+TFngC1u2kl7wm7p |
| TLSH | T1D5D225565F8C4C61E266F8BB865EA00E58BCF63634C205C5BD9CE2753B3D10E0B6B1B8 |
| Reporter |  zbetcheckin |
| Tags: | CVE-2017-11882 FormBook rtf |
Intelligence
File Origin
# of uploads :
1
# of downloads :
109
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
8f6f20b9800cc3739e08c986979fe886
Verdict:
Malicious activity
Analysis date:
2023-06-08 05:30:55 UTC
Tags:
exploit cve-2017-11882 opendir loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
Creating a file in the %temp% subdirectories
Sending an HTTP GET request
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 lolbin shell32.dll shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Result
Verdict:
MALICIOUS
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
88 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Office equation editor establishes network connection
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Behaviour
Behavior Graph:
Detection:
cve-2017-11882-shellcode
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-06-06 09:33:18 UTC
File Type:
Document
Extracted files:
6
AV detection:
15 of 24 (62.50%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook campaign:xchu rat spyware stealer trojan
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Formbook payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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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You need to login to in order to write a comment. Login with your abuse.ch account.url : hxxp://107.172.148.217/re/reeeeeeeeeeeeeeeeeee%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23reeeeeeeeeeeeeeee.doc