MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8e353c1f1a7b0ddea3289b04cb2fb2bde6eacb21298cca8a0c2af37081e5be8d. 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
GuLoader
Vendor detections: 13
| SHA256 hash: | 8e353c1f1a7b0ddea3289b04cb2fb2bde6eacb21298cca8a0c2af37081e5be8d |
|---|---|
| SHA3-384 hash: | f3dc77c6136226d9cf21b7bdbda81717e5b4e20ded0ac678e3f0ea3a91eac7d9c0d1f60c31cf00bb46ca8b81883b8ccb |
| SHA1 hash: | 74b365ae0dc316eee5de6df5911019cabe512efb |
| MD5 hash: | 39669a47b553f5d6b3ed6b730d7852f9 |
| humanhash: | colorado-zulu-alaska-west |
| File name: | 39669a47b553f5d6b3ed6b730d7852f9 |
| Download: | download sample |
| Signature | GuLoader |
| File size: | 23'100 bytes |
| First seen: | 2023-06-08 05:15:22 UTC |
| Last seen: | Never |
| File type: |  rtf |
| MIME type: | text/rtf |
| ssdeep | 384:d8eKvpZlj7bLrJU/Wx1mEIZBFhqeq/d7SZ7DPvZ5pfiZcp2k4V7qQsqG14uT+hS1:dBeZljnLrJUOx180luZfp3p2kA7q1qED |
| TLSH | T1F4A27F565B8C4C61E269E8B7874EE00E58BCF23630C215C4BD9DE2B47B7D14E4B6B1B8 |
| Reporter |  zbetcheckin |
| Tags: | CVE-2017-11882 GuLoader rtf |
Intelligence
File Origin
# of uploads :
1
# of downloads :
111
Origin country :
FRVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
39669a47b553f5d6b3ed6b730d7852f9
Verdict:
Malicious activity
Analysis date:
2023-06-08 05:15:54 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
Creating a window
Сreating synchronization primitives
Result
Verdict:
Malicious
File Type:
RTF File
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
embedequation exploit exploit lolbin shell32.dll shellcode
Verdict:
Malicious
Labled as:
CVE-2017-11882
Result
Verdict:
MALICIOUS
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Drops PE files to the user root directory
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
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Behaviour
Behavior Graph:
Detection:
cve-2017-11882-shellcode
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Status:
Malicious
First seen:
2023-06-06 10:58:05 UTC
File Type:
Document
Extracted files:
4
AV detection:
14 of 24 (58.33%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
guloader
Score:
10/10
Tags:
family:formbook family:guloader campaign:gtt8 downloader 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: MapViewOfSection
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Program crash
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
Guloader,Cloudeye
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/rs/rsrsrsrsrsrrsrsrsrsrsrsrssrsrsr%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23rsrsrsrsrsrsrsrsrsrs.doc