Malware Analysis Report

2025-04-14 05:15

Sample ID 201130-b35zny67p6
Target PO_92847.doc
SHA256 cc3b971f25d0ad410dbe3b7d1d6235041eb36632d0ea6e8d34a6a94e41d79df3
Tags
masslogger persistence spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

cc3b971f25d0ad410dbe3b7d1d6235041eb36632d0ea6e8d34a6a94e41d79df3

Threat Level: Known bad

The file PO_92847.doc was found to be: Known bad.

Malicious Activity Summary

masslogger persistence spyware stealer

MassLogger Main Payload

MassLogger

Executes dropped EXE

Blacklisted process makes network request

Checks computer location settings

Reads user/profile data of web browsers

Loads dropped DLL

Looks up external IP address via web service

Adds Run key to start application

Suspicious use of SetThreadContext

Drops file in Windows directory

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor

Enumerates system info in registry

Suspicious use of SetWindowsHookEx

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Modifies Internet Explorer settings

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-11-30 15:41

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-30 15:41

Reported

2020-11-30 15:43

Platform

win7v20201028

Max time kernel

71s

Max time network

116s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PO_92847.doc"

Signatures

MassLogger

stealer spyware masslogger

MassLogger Main Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Blacklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE N/A

Reads user/profile data of web browsers

spyware

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\vlc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\VideoLAN\\vlc.exe\"" C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A api.ipify.org N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1568 set thread context of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Debug\WIA\wiatrace.log C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor

exploit
Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
N/A N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1424 wrote to memory of 1568 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1424 wrote to memory of 1568 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1424 wrote to memory of 1568 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1424 wrote to memory of 1568 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe
PID 1568 wrote to memory of 1836 N/A C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

Processes

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PO_92847.doc"

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE

"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding

C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

"C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe"

C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

"C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 essaytutoring.co.uk udp
N/A 107.6.141.50:80 essaytutoring.co.uk tcp
N/A 8.8.8.8:53 api.ipify.org udp
N/A 184.73.247.141:80 api.ipify.org tcp

Files

memory/752-2-0x0000000003F90000-0x0000000003F94000-memory.dmp

memory/1940-3-0x000007FEF7500000-0x000007FEF777A000-memory.dmp

\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

MD5 4fe4c85d2319e11340eda19d10139e31
SHA1 69d0dbe78b72b4504df3d0b86c6179102cbae921
SHA256 1e86893e03f2f3bec014fc26e5fabd65fdfa2ddf14111707d0ef20dadf5bcef9
SHA512 cea997ee077c9738032ba1a05ec6dd4a3ff6c5815174c49d9cff9e989bb9872fd7923fbd0d78a9d7cf020bef966f827208473b56f1f8a09e359f793e7a4f2c58

memory/1568-5-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

MD5 4fe4c85d2319e11340eda19d10139e31
SHA1 69d0dbe78b72b4504df3d0b86c6179102cbae921
SHA256 1e86893e03f2f3bec014fc26e5fabd65fdfa2ddf14111707d0ef20dadf5bcef9
SHA512 cea997ee077c9738032ba1a05ec6dd4a3ff6c5815174c49d9cff9e989bb9872fd7923fbd0d78a9d7cf020bef966f827208473b56f1f8a09e359f793e7a4f2c58

C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

MD5 4fe4c85d2319e11340eda19d10139e31
SHA1 69d0dbe78b72b4504df3d0b86c6179102cbae921
SHA256 1e86893e03f2f3bec014fc26e5fabd65fdfa2ddf14111707d0ef20dadf5bcef9
SHA512 cea997ee077c9738032ba1a05ec6dd4a3ff6c5815174c49d9cff9e989bb9872fd7923fbd0d78a9d7cf020bef966f827208473b56f1f8a09e359f793e7a4f2c58

memory/1568-8-0x000000006B2D0000-0x000000006B9BE000-memory.dmp

memory/1568-9-0x0000000000810000-0x0000000000811000-memory.dmp

memory/1568-11-0x0000000005D10000-0x0000000005DB4000-memory.dmp

memory/1568-12-0x00000000004D0000-0x00000000004E6000-memory.dmp

memory/1836-14-0x00000000004821CE-mapping.dmp

memory/1836-13-0x0000000000400000-0x00000000004B4000-memory.dmp

C:\Users\Admin\AppData\Roaming\ueriopdrfuitr8geywtuidgouhsijc;oriuhfwej.exe

MD5 4fe4c85d2319e11340eda19d10139e31
SHA1 69d0dbe78b72b4504df3d0b86c6179102cbae921
SHA256 1e86893e03f2f3bec014fc26e5fabd65fdfa2ddf14111707d0ef20dadf5bcef9
SHA512 cea997ee077c9738032ba1a05ec6dd4a3ff6c5815174c49d9cff9e989bb9872fd7923fbd0d78a9d7cf020bef966f827208473b56f1f8a09e359f793e7a4f2c58

memory/1836-16-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/1836-17-0x0000000000400000-0x00000000004B4000-memory.dmp

memory/1836-18-0x000000006B2D0000-0x000000006B9BE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-30 15:41

Reported

2020-11-30 15:43

Platform

win10v20201028

Max time kernel

136s

Max time network

128s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PO_92847.doc" /o ""

Signatures

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE N/A

Processes

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE

"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\PO_92847.doc" /o ""

Network

Country Destination Domain Proto
N/A 52.109.8.21:443 tcp

Files

memory/756-2-0x00007FFFD2160000-0x00007FFFD2797000-memory.dmp