7f97e6d6337b217ab428de65fc72652be1c739c0ba34b9ef1f629ec823131254

Analysis

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

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General

Target

7f97e6d6337b217ab428de65fc72652be1c739c0ba34b9ef1f629ec823131254.xls
Size

54KB
MD5

f7afd1f5e34da090a6175737c622b853
SHA1

c22a9a3ff849f1f9f4542d3dd4b3b0a3ed5054fa
SHA256

7f97e6d6337b217ab428de65fc72652be1c739c0ba34b9ef1f629ec823131254
SHA512

29ffcfa34862a4b4c042cfdcc73289b515420744537bf21d4de7a417a55aece70ea3675d9805b0cec81eab8fb82a162193ffd94bc972fac31627e7f02875baee

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	4068	988	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

988 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 988 wrote to memory of 4068 988 EXCEL.EXE rundll32.exe
PID 988 wrote to memory of 4068 988 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 988 wrote to memory of 4068	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 4068	988	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\7f97e6d6337b217ab428de65fc72652be1c739c0ba34b9ef1f629ec823131254.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4068

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/988-2-0x00007FFA141D0000-0x00007FFA14807000-memory.dmp

Filesize
6.2MB

Download
memory/4068-3-0x0000000000000000-mapping.dmp

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