d141bc335e621dca9cd1e3340be2987f8d6b057fe384450c4b1059c1cc98ab0d

General

Target

doc.789.xls
Size

143KB
MD5

ed1d2c8d4986bff5a0fb1d4e0992ff33
SHA1

a63f84b1049b338816d4a1d5c8479ff9c05364f3
SHA256

d141bc335e621dca9cd1e3340be2987f8d6b057fe384450c4b1059c1cc98ab0d
SHA512

40e7856982c9603658a1cab7a30e0e15f3474029a263df76bdf96247dbfa61860fbfc6851f4fa8b842a4e6ed21fc6f0cc50a21f876f4a810d6b3ebd97daf5bbd

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:

explorer.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	3952	976	explorer.exe	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEexplorer.exe

description	pid	process	target process
PID 976 wrote to memory of 3952	976	EXCEL.EXE	explorer.exe
PID 976 wrote to memory of 3952	976	EXCEL.EXE	explorer.exe
PID 2296 wrote to memory of 3700	2296	explorer.exe	WScript.exe
PID 2296 wrote to memory of 3700	2296	explorer.exe	WScript.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Modifies registry class 1 IoCs

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000_Classes\Local Settings explorer.exe
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
976 EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

976 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

976 EXCEL.EXE
976 EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000_Classes\Local Settings	explorer.exe

pid	process
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE

pid	process
976	EXCEL.EXE

pid	process
976	EXCEL.EXE
976	EXCEL.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\doc.789.xls"
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
PID:976

C:\Windows\explorer.exe
explorer.exe C:\Users\Public\wOY.vbs
2⤵
- Process spawned unexpected child process
PID:3952

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
- Modifies registry class
PID:2296

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Public\wOY.vbs"
2⤵
PID:3700

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

C:\Users\Public\Qk5FfLQm.txt

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C:\Users\Public\wOY.vbs

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memory/3700-2-0x0000000000000000-mapping.dmp

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memory/3952-0-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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