Malware Analysis Report

2025-04-13 11:50

Sample ID 220119-dxysyafaen
Target 7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3
SHA256 7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3
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

7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3

Threat Level: Known bad

The file 7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3 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

Enumerates system info in registry

Checks processor information in registry

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-19 03:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-19 03:23

Reported

2022-01-19 03:26

Platform

win10-en-20211208

Max time kernel

123s

Max time network

133s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.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
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 3484 wrote to memory of 1856 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\SYSTEM32\rundll32.exe
PID 3484 wrote to memory of 1856 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\7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.xll"

C:\Windows\SYSTEM32\rundll32.exe

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

Network

Country Destination Domain Proto
UA 91.201.202.219:443 tcp
NL 194.147.115.132:443 tcp
UA 194.38.20.30:443 194.38.20.30 tcp
RU 188.127.251.106:443 tcp

Files

memory/3484-115-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-116-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-117-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-118-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-121-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-128-0x00007FF9F7A00000-0x00007FF9F7A10000-memory.dmp

memory/3484-129-0x00007FF9F7A00000-0x00007FF9F7A10000-memory.dmp

\Users\Admin\AppData\Local\Temp\7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.xll

MD5 90628329c8fd992adf0ab9530698cc1e
SHA1 5bdf86da3da6809cf6a231fe8403b9bf6d267308
SHA256 7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3
SHA512 ff0cb1e43b57f21307184c5ce0109d28a753cf852888b5161d0ef0c39acffb7a396c3b777634d8d91d2ccd200faf25e4f6b874ef4ff6b9a950750abe8da5f081

\Users\Admin\AppData\Local\Temp\7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3.xll

MD5 90628329c8fd992adf0ab9530698cc1e
SHA1 5bdf86da3da6809cf6a231fe8403b9bf6d267308
SHA256 7e2a361d904e56e56ebdc4c4439e77f63246ae4276f573ad5b5427a0658fc5a3
SHA512 ff0cb1e43b57f21307184c5ce0109d28a753cf852888b5161d0ef0c39acffb7a396c3b777634d8d91d2ccd200faf25e4f6b874ef4ff6b9a950750abe8da5f081

C:\Users\Admin\JavaObjectReflectC.dll

MD5 30611ee85ec2b27d36ebfd1fa6ae0b04
SHA1 752d50ea499bb5cf628c92cbb4c802f96d88f0a3
SHA256 32675591849772bea37f95c3e28522f741488583d8f7d7c05cd480c6a18a27b1
SHA512 65d84b8a1fafad18d488533ada1932fa4023f4d2729870860688abeb7f40f4ba934335ac6440a563089f596d9c4fd73c206df29e6e898de656fe3e5a45a4ea2f

\Users\Admin\JavaObjectReflectC.dll

MD5 30611ee85ec2b27d36ebfd1fa6ae0b04
SHA1 752d50ea499bb5cf628c92cbb4c802f96d88f0a3
SHA256 32675591849772bea37f95c3e28522f741488583d8f7d7c05cd480c6a18a27b1
SHA512 65d84b8a1fafad18d488533ada1932fa4023f4d2729870860688abeb7f40f4ba934335ac6440a563089f596d9c4fd73c206df29e6e898de656fe3e5a45a4ea2f

memory/1856-259-0x0000000180000000-0x000000018003C000-memory.dmp

memory/3484-281-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-282-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-283-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

memory/3484-284-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp