d80fe38b47b7ee9bc76e40c8e6027b5e5546af1be8d9e3aa0af9ad05bca0dc14

General

Target

CompensationClaim_847899379_03122021.xls
Size

280KB
MD5

3e7a0655c80129cc84e6b0415f0acedf
SHA1

1def6f7e96b0f4a8b4300cb1dd1bde39bed50520
SHA256

908cc857270fcc0f0c278165df9cf6b5ff008388722e687eb9d6544def9c49db
SHA512

f5c040662fee49c81d2bd21409ca84d2c3083b4253fdfe8765d47c41b608f2a741b725901f256c17725c7089daa30a4f3151dc31478b240cdd3d72363b188041

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

rundll32.exerundll32.exerundll32.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	2340	508	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2464	508	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2660	508	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 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

508 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 508 wrote to memory of 2340	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 2340	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 2464	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 2464	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 2660	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 2660	508	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\CompensationClaim_847899379_03122021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:508

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2340

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2464

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/508-2-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/508-3-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/508-4-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/508-5-0x00007FF9A7240000-0x00007FF9A7877000-memory.dmp

Filesize
6.2MB

Download
memory/508-6-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/2340-7-0x0000000000000000-mapping.dmp

Download
memory/2464-8-0x0000000000000000-mapping.dmp

Download
memory/2660-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads