MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4. 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


MassLogger


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4
SHA3-384 hash: 3b7e34615fbe3c5fa2ccd0a41177ac92f583de16d6550a3cd2288b4d4012153a0ff39a46cc56320cd363a100dd0d0897
SHA1 hash: b7c29ebe55ac21e5893cdb332b72761ed6441cd9
MD5 hash: ed75e6e71d66d381295826453ae631e0
humanhash: emma-mexico-september-bluebird
File name:70A12162020.doc
Download: download sample
Signature MassLogger
Create hunting rule
File size:539'254 bytes
First seen:2020-12-17 06:41:10 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 12288:bITtKsD1GzryDqA6zLNL+0dq9P3b/oHWrZORC/8XGxF2zWZ9Q:bQtKvryqzLNL+0dqRbZdjPxwJ
TLSH 68B4BEF876047DE6266F576BDA96ACDC03B62B638ACBA4CD406477C305A3375EE02C05
Reporter abuse_ch
Tags:CVE-2017-11882 doc MassLogger


Avatar
abuse_ch
Malspam distributing unidentified malware:

From: HYJEONG <HYJEONG@pancon.co.kr>
Subject: Arrival Notice (B/L No.:SGN00521270)
Attachment: 70A12162020.doc

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

Intelligence

File Origin
# of uploads :
1
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
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
Running batch commands
Creating a process with a hidden window
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Reading critical registry keys
Sending an HTTP GET request
Sending a TCP request to an infection source
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/564958
Signature
Connects to a pastebin service (likely for C&C)
Hides threads from debuggers
Injects a PE file into a foreign processes
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 331569 Sample: 70A12162020.doc Startdate: 17/12/2020 Architecture: WINDOWS Score: 100 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected MassLogger RAT 2->49 51 Sigma detected: EQNEDT32.EXE connecting to internet 2->51 53 7 other signatures 2->53 8 EQNEDT32.EXE 1 2->8         started        13 WINWORD.EXE 291 23 2->13         started        process3 dnsIp4 35 mute-saga-0240.lovesick.jp 163.44.185.199, 49167, 80 INTERQGMOInternetIncJP Japan 8->35 27 C:\Users\user\AppData\Roaming\VOD.exe, PE32 8->27 dropped 59 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->59 15 VOD.exe 12 1 8->15         started        file5 signatures6 process7 dnsIp8 37 hastebin.com 172.67.143.180, 443, 49168 CLOUDFLARENETUS United States 15->37 39 Multi AV Scanner detection for dropped file 15->39 41 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 15->41 43 Hides threads from debuggers 15->43 45 Injects a PE file into a foreign processes 15->45 19 VOD.exe 15->19         started        23 cmd.exe 15->23         started        signatures9 process10 dnsIp11 29 elb097307-934924932.us-east-1.elb.amazonaws.com 54.225.169.28, 49169, 80 AMAZON-AESUS United States 19->29 31 nagano-19599.herokussl.com 19->31 33 api.ipify.org 19->33 55 Tries to steal Mail credentials (via file access) 19->55 57 Tries to harvest and steal browser information (history, passwords, etc) 19->57 25 timeout.exe 23->25         started        signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-12-17 04:56:43 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=giczfkstkfgh7vbf6tdjdzf6qawkszevlvng7xmwbkdslq3hg62a._file
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger spyware stealer
Link:
https://tria.ge/reports/201217-fnbxtatd6s/
Behaviour
Delays execution with timeout.exe
Launches Equation Editor
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Executes dropped EXE
MassLogger
MassLogger Main Payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4

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

MassLogger

Word file doc 320592aa53514c7fd425f4c691e4be802ca964955d5a6fdd960a8725c36737b4

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments