MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440
SHA3-384 hash: df9f27fd1625dcfb785815100101a2a211d958f7faabe6914a181d7606f3ecbdde1b88ff913e0825feb0798b673315c1
SHA1 hash: a1d8185d8cae9389d8268065c11e95ea14326ff9
MD5 hash: 9b5e8853f6f51a0f9bce61ae689e38a9
humanhash: network-eight-summer-three
File name:Corporation Bank.doc
Download: download sample
Signature GuLoader
Create hunting rule
File size:995'490 bytes
First seen:2021-02-11 06:35:02 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:4BuWoz9gceeMczeQnILQ5ajuj8vceFmUEMQPaLjUW+:v
TLSH D125BFB876047DD6267F576BCA96ACDC03B626639ACBA8CD806477C305A3375FE02C05
Reporter abuse_ch
Tags:doc GuLoader


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: cqu.edu.cn
Sending IP: 185.235.165.132
From: SUNITHA <zhangsf@cqu.edu.cn>
Subject: FW: RFQ: QUOTATION REQUEST
Attachment: Corporation Bank.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
131
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Corporation Bank.doc
Verdict:
Malicious activity
Analysis date:
2021-02-11 06:36:32 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/e91c335d-a2fb-41c0-8193-3a87052191b9

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

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Creating a file in the %AppData% directory
Launching a file downloaded from the Internet
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:
Fake RTF File
Link:
https://app.docguard.net/f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440/results/dashboard
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/605365
Signature
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Yara detected VB6 Downloader Generic
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-11 06:55:31 UTC
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6mg7sp6wrycp2ftzbphqoqu5jbg4gy4yqm5eewh2zvvxp2tkgraa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/210211-tr2ycwkkyx/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440

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_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
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.

Malspam

GuLoader

Word file doc f30df93fd68e04fd16790bcf07429d484dc36398833a4258facd6b77ea6a3440

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments