69e2d449d9caa33cad124a748e55221bbe3aaf17500711b65989a4694625ea86

General

Target

comun_1338.xlsb
Size

65KB
MD5

f84ec393f8280213b4df97a50c8b6de7
SHA1

08b6ca2e9656373735a68dbf0a70506bb128957a
SHA256

69e2d449d9caa33cad124a748e55221bbe3aaf17500711b65989a4694625ea86
SHA512

9b7b93cb165d54f22cc26e4eb0372f19196ae97195ec6b68175011a46bd282d471bb15893cfaf6e8f7e0a6cd4afcd964a5bc13e1d04e73c585b4691109a651a7

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2208	1048	rundll32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1048 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1048 wrote to memory of 2208	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 2208	1048	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\comun_1338.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\djfruJe\gpzuYnG\GDwPMjF.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2208

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1048-2-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-3-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-4-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-5-0x00007FF943B60000-0x00007FF944197000-memory.dmp

Filesize
6.2MB

Download
memory/1048-6-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/2208-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads