76fe96d3bf7ac8c80fb1a41f2dce3dc25e4e92b7b9bd07ea77971d6eacaa3418

General

Target

Complaint-Copy-586583352-03092021.xls
Size

80KB
MD5

c59317100bd570df0a5729f966f1d841
SHA1

5d4e7fd3ecafad8c999e82a7cdc95efe3d04447d
SHA256

c7a7d8e5ba1e52d7fdcc0ebabc1a0b11b6cf87281bfdcab8f9945588c8c8903c
SHA512

fd77b45c1e41a58de7e7c2d5e4b1faa7036c2a065e8f24c26df39ef8ab91c449864036e4f45ac0ad9c31a13e6ce0fb100a3b0ae28bc3633555a774cfca12d19e

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 5 IoCs

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

Processes:

rundll32.exerundll32.exerundll32.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	828	4692	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1156	4692	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1240	4692	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1324	4692	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1468	4692	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

4692 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE
4692	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4692 wrote to memory of 828	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 828	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1156	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1156	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1240	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1240	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1324	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1324	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1468	4692	EXCEL.EXE	rundll32.exe
PID 4692 wrote to memory of 1468	4692	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\Complaint-Copy-586583352-03092021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4692

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Soft.soft,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:828

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Soft.soft1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1156

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Soft.soft2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1240

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Soft.soft3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1324

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Soft.soft4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1468

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/828-7-0x0000000000000000-mapping.dmp

Download
memory/1156-8-0x0000000000000000-mapping.dmp

Download
memory/1240-9-0x0000000000000000-mapping.dmp

Download
memory/1324-10-0x0000000000000000-mapping.dmp

Download
memory/1468-11-0x0000000000000000-mapping.dmp

Download
memory/4692-2-0x00007FFCCE2C0000-0x00007FFCCE2D0000-memory.dmp

Filesize
64KB

Download
memory/4692-3-0x00007FFCCE2C0000-0x00007FFCCE2D0000-memory.dmp

Filesize
64KB

Download
memory/4692-4-0x00007FFCCE2C0000-0x00007FFCCE2D0000-memory.dmp

Filesize
64KB

Download
memory/4692-6-0x00007FFCCE2C0000-0x00007FFCCE2D0000-memory.dmp

Filesize
64KB

Download
memory/4692-5-0x00007FFCF16A0000-0x00007FFCF1CD7000-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