MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe
SHA3-384 hash: c6893527814c46d19308b065ca44914b754b3cca03d88f43c3f60a256db2447a8eb0306bd5692f0bc6853266944fb550
SHA1 hash: 6bf1f72ade16239db6cc14d13191b11278308dd6
MD5 hash: 4f51af14d712b6214c64090a79cb228b
humanhash: mississippi-idaho-mirror-colorado
File name:4f51af14d712b6214c64090a79cb228b
Download: download sample
Signature GuLoader
Create hunting rule
File size:25'648 bytes
First seen:2022-01-27 09:52:39 UTC
Last seen:2022-01-27 11:51:28 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:gn/EbQIVA60WUsnfkbfyipgZzPcuairmgnkeB9QjzO:gSpXfkLyipgUirmgnkeB9czO
TLSH T127B2C9BEB59B8E48DA07D265041ABEA9166DF81D63C040C1BBFCF7347F1D94A8B21538
Reporter zbetcheckin
Tags:CVE-2017-11882 GuLoader rtf

Intelligence

File Origin
# of uploads :
3
# of downloads :
332
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4f51af14d712b6214c64090a79cb228b
Verdict:
Malicious activity
Analysis date:
2022-01-27 09:57:45 UTC
Tags:
opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/7cc0936f-fd14-4263-a121-bb98883a636c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Exploit.ShellCode.69.1418.24238.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Creating a file in the %temp% directory
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
Link:
https://app.docguard.net/7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe CVE-2017-11882 embedequation exploit shell32.dll shellcode
Link:
https://www.filescan.io/uploads/61f26b898581cbffe088df38/reports/fdd4bd85-7482-42b0-9a62-f86584d015e7/overview
Result
Verdict:
MALICIOUS
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/928846
Behaviour
Behavior Graph:
n/a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2022-01-24 21:11:03 UTC
File Type:
Document
Extracted files:
5
AV detection:
22 of 43 (51.16%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
suricata
Link:
https://tria.ge/reports/220127-lwm9taafhj/
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 use of FindShellTrayWindow
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
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.99
Link:
https://yomi.yoroi.company/submissions/7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe

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
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

GuLoader

Rich Text Format (RTF) rtf 7a3188668cd5ef9ed4e17d9f41a9b5eb22690eb9d6151caf9933f121bfbcedbe

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2008892/

Comments


Avatar
zbet commented on 2022-01-27 09:52:42 UTC

url : hxxp://172.245.119.43/invoice/invc_shp.wbk