586bd4e1f5f41569b260ce6cc6b5243bee2209c35915d1a3050cf4196c6133eb

Analysis

max time kernel
140s
max time network
137s
platform
windows10_x64
resource
win10v20201028
submitted
14-01-2021 16:18

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General

Target

586bd4e1f5f41569b260ce6cc6b5243bee2209c35915d1a3050cf4196c6133eb.xls
Size

54KB
MD5

08037f2bf6b8fe9ae8c245903af45729
SHA1

2836aa101a02a284c6df9ed17bd092f25c34f80f
SHA256

586bd4e1f5f41569b260ce6cc6b5243bee2209c35915d1a3050cf4196c6133eb
SHA512

2e0ffec3933f66b623e2eded690497115f251036d282dc915721b61175164eeb0573a1c4706b1f84453c9286ff1b8c3f7a1756fdd41d532dcf8e9dc24c22dc1e

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	1280	508	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

508 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE
508	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 508 wrote to memory of 1280 508 EXCEL.EXE rundll32.exe
PID 508 wrote to memory of 1280 508 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 508 wrote to memory of 1280	508	EXCEL.EXE	rundll32.exe
PID 508 wrote to memory of 1280	508	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\586bd4e1f5f41569b260ce6cc6b5243bee2209c35915d1a3050cf4196c6133eb.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:508

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1280

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/508-2-0x00007FF808F50000-0x00007FF809587000-memory.dmp

Filesize
6.2MB

Download
memory/1280-3-0x0000000000000000-mapping.dmp

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