7b1a017438faf8389c27eef81092adb00ea72e21381234e91f3105c381ec66bc

Analysis

max time kernel
139s
max time network
139s
platform
windows10_x64
resource
win10v20201028
submitted
14-01-2021 16:18

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General

Target

7b1a017438faf8389c27eef81092adb00ea72e21381234e91f3105c381ec66bc.xls
Size

54KB
MD5

e8bd90189959163ba8a82220cf3431de
SHA1

03a7074beda911425e58641f108c39dd0baab106
SHA256

7b1a017438faf8389c27eef81092adb00ea72e21381234e91f3105c381ec66bc
SHA512

da82ff3db6ca84a25edb3eecedb2cd2f119aa0757068aed63455a860841b97edc374272c29aa95559bf28b6aa7c49e41f180e3b59a9075883543f7b11b5b2054

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	1336	816	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

816 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE
816	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 816 wrote to memory of 1336 816 EXCEL.EXE rundll32.exe
PID 816 wrote to memory of 1336 816 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 816 wrote to memory of 1336	816	EXCEL.EXE	rundll32.exe
PID 816 wrote to memory of 1336	816	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\7b1a017438faf8389c27eef81092adb00ea72e21381234e91f3105c381ec66bc.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:816

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1336

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/816-2-0x00007FFB850C0000-0x00007FFB856F7000-memory.dmp

Filesize
6.2MB

Download
memory/1336-3-0x0000000000000000-mapping.dmp

Download