3fa229da3e1c5ce9e890539c534d87bd94af56c1dfa50669fcf19914a8fb6b22

General

Target

comun_1042.xlsb
Size

77KB
MD5

18d76d25506af72b18ef082967d87f77
SHA1

694b49a0ab22e7f06734c6a3c3898f19e84ccd68
SHA256

3fa229da3e1c5ce9e890539c534d87bd94af56c1dfa50669fcf19914a8fb6b22
SHA512

3355b2714f1335b4e0d4ca78e72ee7193ba8bdfd72163518b2fdba401390400d9137bbf7628a3a788179fc673196d7bb973e58bda496968663a873b1ea61630a

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	800	728	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\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

728 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 728 wrote to memory of 800 728 EXCEL.EXE rundll32.exe
PID 728 wrote to memory of 800 728 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 728 wrote to memory of 800	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 800	728	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_1042.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:728

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\djfruJe\gpzuYnG\GDwPMjF.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:800

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

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Downloads

memory/728-2-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-3-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-4-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-5-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-6-0x00007FF99EAA0000-0x00007FF99F0D7000-memory.dmp

Filesize
6.2MB

Download
memory/800-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads