112b835045850e5a2e07cb958e557e31fedbd2d9b6beb295e0dc0a1122b659d7

General

Target

CompensationClaim_1132717900_03152021.xls
Size

233KB
MD5

841c71ffa67996d4499ba392dac351fa
SHA1

0f05f4eda41b530edca06efa60cd182dea88f54e
SHA256

4ed148904f40a652b9918ca1446af1f308287bc325a6dc363fe7693b22b3a073
SHA512

cd0624a348476de14ba88081f3f9310e5f81f1b9028fc32e206e4d8496d80139a7d840f5f52981c3955cbd297ee508016383386603258e00d0a73df1b76f3f45

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	1328	796	Rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3216	796	Rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1904	796	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 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

796 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE
796	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 796 wrote to memory of 1328	796	EXCEL.EXE	Rundll32.exe
PID 796 wrote to memory of 1328	796	EXCEL.EXE	Rundll32.exe
PID 796 wrote to memory of 3216	796	EXCEL.EXE	Rundll32.exe
PID 796 wrote to memory of 3216	796	EXCEL.EXE	Rundll32.exe
PID 796 wrote to memory of 1904	796	EXCEL.EXE	Rundll32.exe
PID 796 wrote to memory of 1904	796	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_1132717900_03152021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:796

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\SOT.GOT,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1328

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\SOT.GOT1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3216

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\SOT.GOT2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1904

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

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Downloads

memory/796-2-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-3-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-4-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-5-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/796-6-0x00007FF99EB50000-0x00007FF99F187000-memory.dmp

Filesize
6.2MB

Download
memory/1328-7-0x0000000000000000-mapping.dmp

Download
memory/1904-9-0x0000000000000000-mapping.dmp

Download
memory/3216-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads