752e76b62d3dd852a045c535d2cd0d1c6b47ef98e55526943738c221c933e166

General

Target

comun_148.xlsb
Size

61KB
MD5

9d400e455aa35dec498bffb77643cdef
SHA1

c32a408e13b4db2c1a82253b1d6ed16131acbd12
SHA256

752e76b62d3dd852a045c535d2cd0d1c6b47ef98e55526943738c221c933e166
SHA512

5e36aaced588a14697cf073a7621b8a665d8715572f75b186b73d9e0e6d26e00c416f933682a552eb8ac57a003b59ad581d77cc791134198a1bfeb2f77aaf0f2

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	3300	4768	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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
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

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

4768 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE
4768	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4768 wrote to memory of 3300	4768	EXCEL.EXE	rundll32.exe
PID 4768 wrote to memory of 3300	4768	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_148.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4768

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\djfruJe\gpzuYnG\GDwPMjF.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3300

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/3300-7-0x0000000000000000-mapping.dmp

Download
memory/4768-2-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-3-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-4-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-5-0x00007FF91BD80000-0x00007FF91BD90000-memory.dmp

Filesize
64KB

Download
memory/4768-6-0x00007FF942270000-0x00007FF9428A7000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads