Malware Analysis Report

2025-04-13 11:50

Sample ID 220119-dy59eafafp
Target 964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b
SHA256 964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b
Tags
bazarloader dropper loader
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 Overview

score
10/10

SHA256

964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b

Threat Level: Known bad

The file 964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader

Bazar Loader

Process spawned unexpected child process

Bazar/Team9 Loader payload

Blocklisted process makes network request

Loads dropped DLL

Enumerates system info in registry

Suspicious behavior: AddClipboardFormatListener

Checks processor information in registry

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-19 03:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-19 03:26

Reported

2022-01-19 03:28

Platform

win10v2004-en-20220113

Max time kernel

145s

Max time network

151s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.xll"

Signatures

Bazar Loader

loader dropper bazarloader

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\rundll32.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Bazar/Team9 Loader payload

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\rundll32.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

Suspicious behavior: AddClipboardFormatListener

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2120 wrote to memory of 3560 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\rundll32.exe
PID 2120 wrote to memory of 3560 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\rundll32.exe

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\964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.xll"

C:\Windows\SYSTEM32\rundll32.exe

rundll32 C:\Users\Admin\JavaObjectReflectiveI.dll , dopt

Network

Country Destination Domain Proto
UA 91.201.202.219:443 tcp

Files

memory/2120-130-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-131-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-132-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-133-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-134-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-137-0x00007FF8B2C80000-0x00007FF8B2C90000-memory.dmp

memory/2120-138-0x00007FF8B2C80000-0x00007FF8B2C90000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.xll

MD5 f355eb875cebdf6418598393987aba03
SHA1 558c007d1f4ae8e10d5216fec28d624f0097d31f
SHA256 964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b
SHA512 232964841b6deabf8fec36b5ccdd98f78a72a8cdda9ddc71fee5d7f4cee742049bd78e6b295c02d111ff1172022be8de8b79d07574ab5028ff22acf45e01644a

C:\Users\Admin\AppData\Local\Temp\964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b.xll

MD5 f355eb875cebdf6418598393987aba03
SHA1 558c007d1f4ae8e10d5216fec28d624f0097d31f
SHA256 964e1ff84b5c231a5176e2e4425d1e8b9186f0b62c02d492505872d48f6dd58b
SHA512 232964841b6deabf8fec36b5ccdd98f78a72a8cdda9ddc71fee5d7f4cee742049bd78e6b295c02d111ff1172022be8de8b79d07574ab5028ff22acf45e01644a

C:\Users\Admin\JavaObjectReflectiveI.dll

MD5 afc195496fa4f0d634aa3bef2c09d4aa
SHA1 8e9975b23e39d4ece0015c15d2ad800d2ab130f5
SHA256 d92b1ff33dd538867dcdc99518515ada909be944c42eda86ee026a2f13a9f5d1
SHA512 226e69c1b1e815f4e7ce217faa1d6e1d8cbdcdab9858a601f36d2196c0e4fa6ca741b1c4f8f51812f655047a92936181ab1cabf1614a555a5882f1c394750cc1

C:\Users\Admin\JavaObjectReflectiveI.dll

MD5 afc195496fa4f0d634aa3bef2c09d4aa
SHA1 8e9975b23e39d4ece0015c15d2ad800d2ab130f5
SHA256 d92b1ff33dd538867dcdc99518515ada909be944c42eda86ee026a2f13a9f5d1
SHA512 226e69c1b1e815f4e7ce217faa1d6e1d8cbdcdab9858a601f36d2196c0e4fa6ca741b1c4f8f51812f655047a92936181ab1cabf1614a555a5882f1c394750cc1

memory/3560-152-0x0000000180000000-0x000000018003C000-memory.dmp

memory/2120-174-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-175-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-176-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp

memory/2120-177-0x00007FF8B5470000-0x00007FF8B5480000-memory.dmp