82d0b5b83d9fa55b57bdcd92f636e48ac7c44303a366be96279d6402bab34257

Analysis

max time kernel
87s
max time network
154s
platform
windows10_x64
resource
win10v20201028
submitted
14-01-2021 16:18

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General

Target

82d0b5b83d9fa55b57bdcd92f636e48ac7c44303a366be96279d6402bab34257.xls
Size

54KB
MD5

12ff01a186adb0427ed0683831d3f7a1
SHA1

d0ce240201c8ba8442e7fafc35f2ee4aa180682d
SHA256

82d0b5b83d9fa55b57bdcd92f636e48ac7c44303a366be96279d6402bab34257
SHA512

235312cf6c84a85ed91ea4246a3e181ec3151a3857845d8a5b579ed62074554697e1251e8b1f44151ad11cc85942f79e195a5bf7145fa8cbe96c4a3b01e05ae2

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	3856	740	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

740 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 740 wrote to memory of 3856 740 EXCEL.EXE rundll32.exe
PID 740 wrote to memory of 3856 740 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 740 wrote to memory of 3856	740	EXCEL.EXE	rundll32.exe
PID 740 wrote to memory of 3856	740	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\82d0b5b83d9fa55b57bdcd92f636e48ac7c44303a366be96279d6402bab34257.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/740-2-0x00007FFD716C0000-0x00007FFD71CF7000-memory.dmp

Filesize
6.2MB

Download
memory/3856-3-0x0000000000000000-mapping.dmp

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