3eefa9f1e1e38dddb63bd3c41ccfa32a618e56150645e4c0c2ebd3fe2a956b9f

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

3eefa9f1e1e38dddb63bd3c41ccfa32a618e56150645e4c0c2ebd3fe2a956b9f.xls
Size

54KB
MD5

5dbbd74f89b695d003ba1d1562d2d92c
SHA1

d3fb98b440190fd45e2e97b5ff7d9fb57d802062
SHA256

3eefa9f1e1e38dddb63bd3c41ccfa32a618e56150645e4c0c2ebd3fe2a956b9f
SHA512

b8bf0ba19ff0d227b452f03ef107e53e24be571ebcdaffb541c395d28dcb7bbb796718e479b2360401b8ca616c1fcb1bc7d798ec8dab3bade64da1c8a1d241d5

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	2164	1176	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

1176 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1176 EXCEL.EXE
1176 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE
1176	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1176 wrote to memory of 2164	1176	EXCEL.EXE	rundll32.exe
PID 1176 wrote to memory of 2164	1176	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\3eefa9f1e1e38dddb63bd3c41ccfa32a618e56150645e4c0c2ebd3fe2a956b9f.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1176

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2164

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/1176-2-0x00007FFE6CF80000-0x00007FFE6D5B7000-memory.dmp

Filesize
6.2MB

Download
memory/2164-3-0x0000000000000000-mapping.dmp

Download