99464d2fe2aa5abbfb5c8f51d90d0848b5fd6df3dde9d042d3f6b2bb6269ee03

General

Target

CompensationClaim_1766530077_03122021.xls
Size

280KB
MD5

e57b0fec2bcc5e65fd5afd5a90a07aa3
SHA1

696cd7d64807e7830943bdccd95e7a2663b44c80
SHA256

99464d2fe2aa5abbfb5c8f51d90d0848b5fd6df3dde9d042d3f6b2bb6269ee03
SHA512

8849a2c23616abf869ea4612b1fb80db329415b64e5304f153a6a4e4b7d4e2bd20b57f9bd0b8357246356973ab04be5daed58f984880130c8e07930cf2cf04ec

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	2452	644	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1968	644	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1372	644	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

644 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 644 wrote to memory of 2452	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 2452	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 1968	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 1968	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 1372	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 1372	644	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_1766530077_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:644

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2452

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1968

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1372

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/644-2-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/644-3-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/644-4-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/644-5-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/644-6-0x00007FF91E6F0000-0x00007FF91ED27000-memory.dmp

Filesize
6.2MB

Download
memory/1372-9-0x0000000000000000-mapping.dmp

Download
memory/1968-8-0x0000000000000000-mapping.dmp

Download
memory/2452-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads