Malware Analysis Report

2025-03-15 07:58

Sample ID 240815-1h6xbs1akn
Target caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566
SHA256 caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566
Tags
macro macro_on_action discovery evasion
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
8/10

SHA256

caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566

Threat Level: Likely malicious

The file caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566 was found to be: Likely malicious.

Malicious Activity Summary

macro macro_on_action discovery evasion

Office macro that triggers on suspicious action

Suspicious Office macro

Disables RegEdit via registry modification

System Location Discovery: System Language Discovery

Office loads VBA resources, possible macro or embedded object present

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies Internet Explorer start page

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-15 21:40

Signatures

Office macro that triggers on suspicious action

macro macro_on_action
Description Indicator Process Target
N/A N/A N/A N/A

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-15 21:40

Reported

2024-08-15 21:41

Platform

win7-20240704-en

Max time kernel

11s

Max time network

15s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566.xls

Signatures

Disables RegEdit via registry modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\SOFTWARE\MICROSOFT\Internet Explorer\Main C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Modifies Internet Explorer start page

stealer
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\Start Page = "http://3azu.taobao.com" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "http://3azu.taobao.com" C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Processes

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

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566.xls

Network

N/A

Files

memory/3012-1-0x0000000071E5D000-0x0000000071E68000-memory.dmp

memory/3012-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/3012-7-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3012-9-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3012-6-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3012-5-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3012-2-0x00000000005F0000-0x00000000006F0000-memory.dmp

memory/3012-3-0x00000000005F0000-0x00000000006F0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\VB1392.tmp

MD5 63a99f0138b8b8db9b1ea7c49bf4b9fb
SHA1 20f81df4d9b710d478974e64c3f00f27504b454c
SHA256 516eb4fe006dadc0cc6074a99a6cf572e6141766335f8198b00a0067d512ac1f
SHA512 c894d763c1b772a3fcc89683f3ce7c142069106efafaad39ba98f9368a7b79310f541d6fe1aceafee7d6272df75eae2879a5d426bbaebda299a1c5e5a08b25c5

memory/3012-31-0x0000000071E5D000-0x0000000071E68000-memory.dmp

memory/3012-32-0x00000000005F0000-0x00000000006F0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-15 21:40

Reported

2024-08-15 21:41

Platform

win10v2004-20240802-en

Max time kernel

51s

Max time network

52s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566.xls"

Signatures

Disables RegEdit via registry modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

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\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.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\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Modifies Internet Explorer start page

stealer
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "http://3azu.taobao.com" C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

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

Processes

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

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\caf382e68c15d63324bc42c21c891d7a6ece9b23f955d1b8e37c429073e9f566.xls"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
FR 52.109.68.129:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 129.68.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 63.141.182.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/868-0-0x00007FF817F90000-0x00007FF817FA0000-memory.dmp

memory/868-1-0x00007FF857FAD000-0x00007FF857FAE000-memory.dmp

memory/868-3-0x00007FF817F90000-0x00007FF817FA0000-memory.dmp

memory/868-2-0x00007FF817F90000-0x00007FF817FA0000-memory.dmp

memory/868-5-0x00007FF817F90000-0x00007FF817FA0000-memory.dmp

memory/868-4-0x00007FF817F90000-0x00007FF817FA0000-memory.dmp

memory/868-9-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-8-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-7-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-11-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-12-0x00007FF815C40000-0x00007FF815C50000-memory.dmp

memory/868-10-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-6-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-13-0x00007FF815C40000-0x00007FF815C50000-memory.dmp

memory/868-16-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-17-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-21-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-20-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-19-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-18-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-15-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-14-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-47-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-40-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-52-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-51-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-50-0x00007FF857F10000-0x00007FF858105000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\VB8B2A.tmp

MD5 63a99f0138b8b8db9b1ea7c49bf4b9fb
SHA1 20f81df4d9b710d478974e64c3f00f27504b454c
SHA256 516eb4fe006dadc0cc6074a99a6cf572e6141766335f8198b00a0067d512ac1f
SHA512 c894d763c1b772a3fcc89683f3ce7c142069106efafaad39ba98f9368a7b79310f541d6fe1aceafee7d6272df75eae2879a5d426bbaebda299a1c5e5a08b25c5

memory/868-60-0x00007FF857F10000-0x00007FF858105000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

MD5 28d593471adaf398c30a72cd009d3b3b
SHA1 b4e3c9b9fb57178ef4a147445fbde085c53cc420
SHA256 e7e259e2475d24d00651d61b5083421d347ac6ac139f5507a14199c33154d27d
SHA512 a2af2b123190e827a59ce46a3db476406fa094f746069d78384d0e11e8899af3af592572602460628572395544e896b3f6a19b5caaef3f706fc443be743082cd

memory/868-75-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-76-0x00007FF857FAD000-0x00007FF857FAE000-memory.dmp

memory/868-77-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-78-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-82-0x00007FF857F10000-0x00007FF858105000-memory.dmp

memory/868-83-0x00007FF857F10000-0x00007FF858105000-memory.dmp