9b470dacf861d9d4ed1bde3aefeccdfba8bae060db8f96536528362524f2b74c

Analysis

max time kernel
14s
max time network
50s
platform
windows10_x64
resource
win10v20201028
submitted
14-01-2021 16:18

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General

Target

9b470dacf861d9d4ed1bde3aefeccdfba8bae060db8f96536528362524f2b74c.xls
Size

54KB
MD5

10db4ddd87c4b4cf62eb9235f4dc858e
SHA1

adf95d3be555f29a54d910445f6fc6fbdd960795
SHA256

9b470dacf861d9d4ed1bde3aefeccdfba8bae060db8f96536528362524f2b74c
SHA512

d35e5d3b9bc381120467dff7baa0bd21742be5e29e6906b7a0af240ef3b5adfa6534c886ac658391fefd51d4afc2f02493499d934c62a829b0af92ef55a4c9e3

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	4220	4760	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4760 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4760 EXCEL.EXE
4760 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE
4760	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4760 wrote to memory of 4220	4760	EXCEL.EXE	rundll32.exe
PID 4760 wrote to memory of 4220	4760	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\9b470dacf861d9d4ed1bde3aefeccdfba8bae060db8f96536528362524f2b74c.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:4760

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\IntelCompany\JIOLAS.RRTTOOKK,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4220

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/4220-3-0x0000000000000000-mapping.dmp

Download
memory/4760-2-0x00007FFAED800000-0x00007FFAEDE37000-memory.dmp

Filesize
6.2MB

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