1a5b07ad875ff013b0a98cab20382645f0465201b6b29a83b99b671a5240a40d

General

Target

CompensationClaim_916887251_03122021.xls
Size

280KB
MD5

00b3e93aa50b54e4370685eac11359e0
SHA1

979caebf13a6a7bb3ce36ca4d63596bf98fe75d3
SHA256

1a5b07ad875ff013b0a98cab20382645f0465201b6b29a83b99b671a5240a40d
SHA512

0caa35aea822cf77c397abadebfbd8deecf2b8ad41497cbc9270e1c83e9a3122112307d3dcb810488f4843b072fc32677d84a1f55be23bbf2526a0638de385bd

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	3256	3980	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	420	3980	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3112	3980	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

3980 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE
3980	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3980 wrote to memory of 3256	3980	EXCEL.EXE	rundll32.exe
PID 3980 wrote to memory of 3256	3980	EXCEL.EXE	rundll32.exe
PID 3980 wrote to memory of 420	3980	EXCEL.EXE	rundll32.exe
PID 3980 wrote to memory of 420	3980	EXCEL.EXE	rundll32.exe
PID 3980 wrote to memory of 3112	3980	EXCEL.EXE	rundll32.exe
PID 3980 wrote to memory of 3112	3980	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_916887251_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:3980

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3256

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:420

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtim.broks2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3112

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/420-8-0x0000000000000000-mapping.dmp

Download
memory/3112-9-0x0000000000000000-mapping.dmp

Download
memory/3256-7-0x0000000000000000-mapping.dmp

Download
memory/3980-2-0x00007FFEB5670000-0x00007FFEB5680000-memory.dmp

Filesize
64KB

Download
memory/3980-3-0x00007FFEB5670000-0x00007FFEB5680000-memory.dmp

Filesize
64KB

Download
memory/3980-4-0x00007FFEB5670000-0x00007FFEB5680000-memory.dmp

Filesize
64KB

Download
memory/3980-5-0x00007FFED9160000-0x00007FFED9797000-memory.dmp

Filesize
6.2MB

Download
memory/3980-6-0x00007FFEB5670000-0x00007FFEB5680000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads