MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f41863057e1e153f0cd2a05c7c508d55dbe6e1e8e0c78b5aea2356a30996c7a. 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: 6


Intelligence 6 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f41863057e1e153f0cd2a05c7c508d55dbe6e1e8e0c78b5aea2356a30996c7a
SHA3-384 hash: 4b7311497ff909b92d54bb970201a5ba352600ada3c6b43d8b61c0263a297ca039605b802da85b5b9480d9a58b6731e9
SHA1 hash: 32a2d759506a1a992202a8ae35f1467e33a29928
MD5 hash: 0c8cf53bfac4bfdd97aa3b44885e695b
humanhash: london-sodium-tennis-vermont
File name:Vessel details.doc
Download: download sample
Signature MassLogger
Create hunting rule
File size:309'751 bytes
First seen:2020-11-25 20:44:48 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:Jn5TxdsyvmAkqrJL7oXpDkTXAWifIxg6Is4y2LD4RQn7u9cwx5MxES:Jn5TxdveAkqrJL70pAAKxa/PYMhwHe9
TLSH D564AFB876047DD6676F036BCDA6ADED13B5276399CBA4CC8065B7C305A3336EE02805
Reporter fabjer
Tags: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 :
131
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Result
Gathering data
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/547592
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Antivirus detection for dropped file
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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)
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)
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 322911 Sample: Vessel details.doc Startdate: 26/11/2020 Architecture: WINDOWS Score: 100 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for dropped file 2->38 40 Multi AV Scanner detection for dropped file 2->40 42 11 other signatures 2->42 7 EQNEDT32.EXE 15 2->7         started        12 vlc.exe 2->12         started        14 WINWORD.EXE 336 19 2->14         started        16 EQNEDT32.EXE 2->16         started        process3 dnsIp4 34 cdn.discordapp.com 162.159.135.233, 443, 49165, 49166 CLOUDFLARENETUS United States 7->34 28 C:\Users\user\AppData\Roaming\vqmoplwb.exe, PE32 7->28 dropped 30 C:\Users\user\AppData\Local\...\mocux[1].exe, PE32 7->30 dropped 32 C:\Users\user\AppData\Local\...\mocux[1].exe, ASCII 7->32 dropped 52 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->52 18 vqmoplwb.exe 2 7 7->18         started        54 Injects a PE file into a foreign processes 12->54 22 vlc.exe 2 12->22         started        file5 signatures6 process7 file8 26 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 18->26 dropped 44 Antivirus detection for dropped file 18->44 46 Multi AV Scanner detection for dropped file 18->46 48 Machine Learning detection for dropped file 18->48 50 Injects a PE file into a foreign processes 18->50 24 vqmoplwb.exe 2 18->24         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f41863057e1e153f0cd2a05c7c508d55dbe6e1e8e0c78b5aea2356a30996c7a/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-11-25 20:45:04 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger persistence spyware stealer
Link:
https://tria.ge/reports/201125-qb8gcmgddx/
Behaviour
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
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Blacklisted process makes network request
Executes dropped EXE
ServiceHost packer
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/8f41863057e1e153f0cd2a05c7c508d55dbe6e1e8e0c78b5aea2356a30996c7a

File information

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

Malspam

MassLogger

Word file doc 8f41863057e1e153f0cd2a05c7c508d55dbe6e1e8e0c78b5aea2356a30996c7a

(this sample)

MassLogger

Executable exe b78c057366525777ab931d9a4a2962a2df499a6690aae1f3e215097d5adbb458

  
Dropping
SHA256 b78c057366525777ab931d9a4a2962a2df499a6690aae1f3e215097d5adbb458
  
Delivery method
Distributed via e-mail attachment

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