6cf0a44011ec1e1a891d7d06357c4687634e42d65a3eecfe9180e608b5d6e150

General

Target

case#_139739537_445143708.xls
Size

124KB
MD5

2739a59d758db92aafa95fa723456172
SHA1

5466fe009cf7ee11393085ebd99c16963d49eb0a
SHA256

6cf0a44011ec1e1a891d7d06357c4687634e42d65a3eecfe9180e608b5d6e150
SHA512

34a1ab6d936cad32599b367011aad3bc8635d1efc50e68b5b621d35d736465105dba88d97aab19120d759431bcf29d13f504e29ec673e19d430dae03d20f8839

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	1828	640	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

640 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 640 wrote to memory of 1828 640 EXCEL.EXE rundll32.exe
PID 640 wrote to memory of 1828 640 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 640 wrote to memory of 1828	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 1828	640	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\case#_139739537_445143708.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\svh.osts,DllRegisterServer1
2⤵
- Process spawned unexpected child process
PID:1828

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/640-2-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/640-3-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/640-4-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/640-5-0x00007FF8FADF0000-0x00007FF8FAE00000-memory.dmp

Filesize
64KB

Download
memory/640-6-0x00007FF91E6F0000-0x00007FF91ED27000-memory.dmp

Filesize
6.2MB

Download
memory/1828-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads