Malware Analysis Report

2025-04-13 11:50

Sample ID 220119-npep7shda8
Target 2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3
SHA256 2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3
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

2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3

Threat Level: Known bad

The file 2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3 was found to be: Known bad.

Malicious Activity Summary

bazarloader dropper loader

Process spawned unexpected child process

Bazar Loader

Bazar/Team9 Loader payload

Blocklisted process makes network request

Loads dropped DLL

Suspicious behavior: AddClipboardFormatListener

Checks processor information in registry

Enumerates system info in registry

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-19 11:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-19 11:34

Reported

2022-01-19 11:36

Platform

win10-en-20211208

Max time kernel

140s

Max time network

152s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.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
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 3776 wrote to memory of 2948 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\rundll32.exe
PID 3776 wrote to memory of 2948 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\2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll"

C:\Windows\SYSTEM32\rundll32.exe

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

Network

Country Destination Domain Proto
UA 91.201.202.219:443 tcp
NL 194.147.115.132:443 tcp

Files

memory/3776-115-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-116-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-117-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-118-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-121-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-128-0x00007FFD43CA0000-0x00007FFD43CB0000-memory.dmp

memory/3776-129-0x00007FFD43CA0000-0x00007FFD43CB0000-memory.dmp

\Users\Admin\AppData\Local\Temp\2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll

MD5 3bd7357d0ba62270d8c3bcff6e335820
SHA1 1619e10be5789fab0f69e26353ee0e9669b4c7ad
SHA256 2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3
SHA512 cf35c7a66feb38a01ab082d44d2153ad6f97349d210a07966f9b5154e94f121bbf2cf31dd7e499e54188f2a0857a1c92837e2de69b640e3e1adf0b04ee89e746

\Users\Admin\AppData\Local\Temp\2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3.xll

MD5 3bd7357d0ba62270d8c3bcff6e335820
SHA1 1619e10be5789fab0f69e26353ee0e9669b4c7ad
SHA256 2a44ed0a9fda586147fb82a9927090f745e68887712a29d34e4bb1c52a83fba3
SHA512 cf35c7a66feb38a01ab082d44d2153ad6f97349d210a07966f9b5154e94f121bbf2cf31dd7e499e54188f2a0857a1c92837e2de69b640e3e1adf0b04ee89e746

C:\Users\Admin\JavaObjectReflectR.dll

MD5 6cdc65aaff63b216bcc9335cbadda1ca
SHA1 a8555be399fe2b5045993bb82fce15a1b679eb5f
SHA256 f8f6021460464490d9da511350f0e325a467cfb4c7e59bbf010e0b19a7b80c8d
SHA512 d39420d472aba5f3938e9403f37a0c1dc37dfd7aea336cc3a8ceff0a7a70e53b4be9c7628df53d05da5fdb8a375a6a328689f0267d02540f1f8a6d02bf2caad4

\Users\Admin\JavaObjectReflectR.dll

MD5 6cdc65aaff63b216bcc9335cbadda1ca
SHA1 a8555be399fe2b5045993bb82fce15a1b679eb5f
SHA256 f8f6021460464490d9da511350f0e325a467cfb4c7e59bbf010e0b19a7b80c8d
SHA512 d39420d472aba5f3938e9403f37a0c1dc37dfd7aea336cc3a8ceff0a7a70e53b4be9c7628df53d05da5fdb8a375a6a328689f0267d02540f1f8a6d02bf2caad4

memory/2948-259-0x0000000180000000-0x000000018003C000-memory.dmp

memory/3776-277-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-278-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-279-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp

memory/3776-280-0x00007FFD467F0000-0x00007FFD46800000-memory.dmp