Malware Analysis Report

2025-04-14 05:13

Sample ID 201207-l1kbwpjarx
Target TAF5xRBqc.rtf
SHA256 ad7a57d9fe77aaf343581db70a3fd4a434f6a8ae92fa8731622b3ecf12319321
Tags
masslogger 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

ad7a57d9fe77aaf343581db70a3fd4a434f6a8ae92fa8731622b3ecf12319321

Threat Level: Known bad

The file TAF5xRBqc.rtf was found to be: Known bad.

Malicious Activity Summary

masslogger spyware stealer

MassLogger

MassLogger Main Payload

Blocklisted process makes network request

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Checks computer location settings

Looks up external IP address via web service

Suspicious use of SetThreadContext

Drops file in System32 directory

Drops file in Windows directory

Office loads VBA resources, possible macro or embedded object present

Modifies Internet Explorer settings

Enumerates system info in registry

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

Launches Equation Editor

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-12-07 20:21

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-12-07 20:21

Reported

2020-12-07 20:24

Platform

win7v20201028

Max time kernel

63s

Max time network

122s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\TAF5xRBqc.rtf"

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\angel376891.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\angel376891.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Roaming\angel376891.exe N/A

Reads user/profile data of web browsers

spyware

Looks up external IP address via web service

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1144 set thread context of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\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
Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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
Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt 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\angel376891.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\angel376891.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2036 wrote to memory of 1144 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 2036 wrote to memory of 1144 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 2036 wrote to memory of 1144 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 2036 wrote to memory of 1144 N/A C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 1144 wrote to memory of 1680 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Users\Admin\AppData\Roaming\angel376891.exe
PID 776 wrote to memory of 616 N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE C:\Windows\splwow64.exe
PID 776 wrote to memory of 616 N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE C:\Windows\splwow64.exe
PID 776 wrote to memory of 616 N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE C:\Windows\splwow64.exe
PID 776 wrote to memory of 616 N/A C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE C:\Windows\splwow64.exe
PID 1680 wrote to memory of 1340 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1680 wrote to memory of 1340 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1680 wrote to memory of 1340 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 1680 wrote to memory of 1340 N/A C:\Users\Admin\AppData\Roaming\angel376891.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.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\TAF5xRBqc.rtf"

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\angel376891.exe

"C:\Users\Admin\AppData\Roaming\angel376891.exe"

C:\Users\Admin\AppData\Roaming\angel376891.exe

"C:\Users\Admin\AppData\Roaming\angel376891.exe"

C:\Windows\splwow64.exe

C:\Windows\splwow64.exe 12288

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\angel376891.exe'

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 cdn.discordapp.com udp
N/A 162.159.135.233:80 cdn.discordapp.com tcp
N/A 162.159.135.233:443 cdn.discordapp.com tcp
N/A 8.8.8.8:53 www.download.windowsupdate.com udp
N/A 8.8.8.8:53 api.ipify.org udp
N/A 54.243.164.148:80 api.ipify.org tcp
N/A 8.8.8.8:53 crl.verisign.com udp

Files

memory/776-2-0x0000000003F20000-0x0000000003F24000-memory.dmp

memory/1724-3-0x000007FEF72E0000-0x000007FEF755A000-memory.dmp

\Users\Admin\AppData\Roaming\angel376891.exe

MD5 502651f64975fefea89045df9c37af20
SHA1 3211c3ca578bf5c258608627662c851eb008b248
SHA256 5de9eb96e1e47a35585e0eb77d4b2567c87d57812fdde90ecb62d3d9f9a81e8e
SHA512 1b22d2aff226a9bab3d75d841ae949be0614faaea9ad0a3bfd3a50710d4a0b87b9564119a88da9beda24cc15ceed75e7cd5cfea48a261e11a74e167224790efb

memory/1144-6-0x0000000000000000-mapping.dmp

\Users\Admin\AppData\Roaming\angel376891.exe

MD5 502651f64975fefea89045df9c37af20
SHA1 3211c3ca578bf5c258608627662c851eb008b248
SHA256 5de9eb96e1e47a35585e0eb77d4b2567c87d57812fdde90ecb62d3d9f9a81e8e
SHA512 1b22d2aff226a9bab3d75d841ae949be0614faaea9ad0a3bfd3a50710d4a0b87b9564119a88da9beda24cc15ceed75e7cd5cfea48a261e11a74e167224790efb

C:\Users\Admin\AppData\Roaming\angel376891.exe

MD5 502651f64975fefea89045df9c37af20
SHA1 3211c3ca578bf5c258608627662c851eb008b248
SHA256 5de9eb96e1e47a35585e0eb77d4b2567c87d57812fdde90ecb62d3d9f9a81e8e
SHA512 1b22d2aff226a9bab3d75d841ae949be0614faaea9ad0a3bfd3a50710d4a0b87b9564119a88da9beda24cc15ceed75e7cd5cfea48a261e11a74e167224790efb

C:\Users\Admin\AppData\Roaming\angel376891.exe

MD5 502651f64975fefea89045df9c37af20
SHA1 3211c3ca578bf5c258608627662c851eb008b248
SHA256 5de9eb96e1e47a35585e0eb77d4b2567c87d57812fdde90ecb62d3d9f9a81e8e
SHA512 1b22d2aff226a9bab3d75d841ae949be0614faaea9ad0a3bfd3a50710d4a0b87b9564119a88da9beda24cc15ceed75e7cd5cfea48a261e11a74e167224790efb

memory/1144-9-0x000000006A9C0000-0x000000006B0AE000-memory.dmp

memory/1144-10-0x0000000001360000-0x0000000001361000-memory.dmp

memory/776-12-0x0000000001E70000-0x0000000001E71000-memory.dmp

memory/1144-13-0x0000000000B00000-0x0000000000B94000-memory.dmp

memory/1680-15-0x000000000048203E-mapping.dmp

memory/1680-14-0x0000000000400000-0x0000000000488000-memory.dmp

C:\Users\Admin\AppData\Roaming\angel376891.exe

MD5 502651f64975fefea89045df9c37af20
SHA1 3211c3ca578bf5c258608627662c851eb008b248
SHA256 5de9eb96e1e47a35585e0eb77d4b2567c87d57812fdde90ecb62d3d9f9a81e8e
SHA512 1b22d2aff226a9bab3d75d841ae949be0614faaea9ad0a3bfd3a50710d4a0b87b9564119a88da9beda24cc15ceed75e7cd5cfea48a261e11a74e167224790efb

memory/1680-17-0x0000000000400000-0x0000000000488000-memory.dmp

memory/1680-18-0x0000000000400000-0x0000000000488000-memory.dmp

memory/1680-19-0x000000006A2D0000-0x000000006A9BE000-memory.dmp

memory/616-22-0x0000000000000000-mapping.dmp

memory/1340-23-0x0000000000000000-mapping.dmp

memory/1340-24-0x000000006A2D0000-0x000000006A9BE000-memory.dmp

memory/1340-25-0x0000000000A20000-0x0000000000A21000-memory.dmp

memory/1340-26-0x0000000004AE0000-0x0000000004AE1000-memory.dmp

memory/1340-27-0x0000000002630000-0x0000000002631000-memory.dmp

memory/1340-28-0x0000000002810000-0x0000000002811000-memory.dmp

memory/1340-31-0x0000000005FE0000-0x0000000005FE1000-memory.dmp

memory/1340-36-0x00000000060C0000-0x00000000060C1000-memory.dmp

memory/1340-37-0x0000000006120000-0x0000000006121000-memory.dmp

memory/1340-44-0x0000000006280000-0x0000000006281000-memory.dmp

memory/1340-45-0x00000000061E0000-0x00000000061E1000-memory.dmp

memory/1340-59-0x0000000006300000-0x0000000006301000-memory.dmp

memory/1340-60-0x0000000006310000-0x0000000006311000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-12-07 20:21

Reported

2020-12-07 20:24

Platform

win10v20201028

Max time kernel

140s

Max time network

135s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\TAF5xRBqc.rtf" /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\TAF5xRBqc.rtf" /o ""

Network

N/A

Files

memory/576-2-0x00007FFC30470000-0x00007FFC30AA7000-memory.dmp