210468bf9c97e5bbae46e464625550d20079fb3766ad33d490f06e0cd037163a

Analysis

max time kernel
30s
max time network
73s
platform
windows10_x64
resource
win10v20201028
submitted
14-01-2021 16:18

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General

Target

210468bf9c97e5bbae46e464625550d20079fb3766ad33d490f06e0cd037163a.xls
Size

54KB
MD5

0ab5d82db3541b40b3ef56d03efe8a3f
SHA1

e44e018503f87fa50b1ad1e7e56a3f4a3b56eff9
SHA256

210468bf9c97e5bbae46e464625550d20079fb3766ad33d490f06e0cd037163a
SHA512

2824970bfa09450f8266274e4da423b0c418289b033842402959886a8514d4564620a83b82af5217be88eeb088621826f816e0fa320b3c0a11dfc8493eaae1fa

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	3976	540	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

540 EXCEL.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
540 EXCEL.EXE
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 540 wrote to memory of 3976 540 EXCEL.EXE rundll32.exe
PID 540 wrote to memory of 3976 540 EXCEL.EXE rundll32.exe

pid	process
540	EXCEL.EXE

pid	process
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE

description	pid	process	target process
PID 540 wrote to memory of 3976	540	EXCEL.EXE	rundll32.exe
PID 540 wrote to memory of 3976	540	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\210468bf9c97e5bbae46e464625550d20079fb3766ad33d490f06e0cd037163a.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3976

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/540-2-0x00007FF9A7110000-0x00007FF9A7747000-memory.dmp

Filesize
6.2MB

Download
memory/3976-3-0x0000000000000000-mapping.dmp

Download