a74da8649fea66330816220b40520f3c1325f9ba993eef1f7cab6bf389fff6f6

General

Target

2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025.xls
Size

277KB
MD5

1948bc3b2bf65c03c43a8ce5cac48dcf
SHA1

51b3a92fae730691ebe98542a328446c703aa74a
SHA256

2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025
SHA512

566157b6bc604c0076340c62c58d2f1591520e81fa3d41b952b44b5ecf9a104895414bc3407310ab740f2537d3d70ab0840a5010f0f5eb9af0c7bf46a8f61ddf

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	3940	3284	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1716	3284	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3832	3284	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2068	3284	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3568	3284	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

3284 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE
3284	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3284 wrote to memory of 3940	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 3940	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 1716	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 1716	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 3832	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 3832	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 2068	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 2068	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 3568	3284	EXCEL.EXE	rundll32.exe
PID 3284 wrote to memory of 3568	3284	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\2b5c81678f0dcf599ccb6233e6e7cdf5188e80e7628e2ca831a14b4002a95025.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3284

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtime.brok,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3940

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtime.brok1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1716

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtime.brok2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3832

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtime.brok3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2068

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Runtime.brok4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3568

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/1716-8-0x0000000000000000-mapping.dmp

Download
memory/2068-10-0x0000000000000000-mapping.dmp

Download
memory/3284-2-0x00007FF7FA740000-0x00007FF7FA750000-memory.dmp

Filesize
64KB

Download
memory/3284-3-0x00007FF7FA740000-0x00007FF7FA750000-memory.dmp

Filesize
64KB

Download
memory/3284-4-0x00007FF7FA740000-0x00007FF7FA750000-memory.dmp

Filesize
64KB

Download
memory/3284-5-0x00007FF81E2E0000-0x00007FF81E917000-memory.dmp

Filesize
6.2MB

Download
memory/3284-6-0x00007FF7FA740000-0x00007FF7FA750000-memory.dmp

Filesize
64KB

Download
memory/3568-11-0x0000000000000000-mapping.dmp

Download
memory/3832-9-0x0000000000000000-mapping.dmp

Download
memory/3940-7-0x0000000000000000-mapping.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads