9fbfeb3873dee627be46cf7c10015435d027d718dd42a7842badd45e590f782b

General

Target

9fbfeb3873dee627be46cf7c10015435d027d718dd42a7842badd45e590f782b.xlsm
Size

83KB
MD5

cf82eec9632dc53d54c38f1d7b8a1b71
SHA1

7b7e3339a8e857f1525341c074571ee7d7e9dd7f
SHA256

9fbfeb3873dee627be46cf7c10015435d027d718dd42a7842badd45e590f782b
SHA512

346297dc7ce5b9caf84b766e40339372012f3401f010a7473a52cdb9a56027bdef53869a7aa543b67aa890536d442ed718583b04a7328302a164b7dba6f6dd29

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/

xlm40.dropper

http://laserjetprintersreview.xyz/wp-includes/BJ6yUJ/

xlm40.dropper

http://2021.posadamision.com/wp-admin/IoqaL08/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1360	3484	rundll32.exe	68

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1360	rundll32.exe
2972	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Nvfyyginru\arqdfoagsu.hfn	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
3484	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE
3484	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 1360	3484	EXCEL.EXE	71
PID 3484 wrote to memory of 1360	3484	EXCEL.EXE	71
PID 3484 wrote to memory of 1360	3484	EXCEL.EXE	71
PID 1360 wrote to memory of 2972	1360	rundll32.exe	74
PID 1360 wrote to memory of 2972	1360	rundll32.exe	74
PID 1360 wrote to memory of 2972	1360	rundll32.exe	74

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\9fbfeb3873dee627be46cf7c10015435d027d718dd42a7842badd45e590f782b.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    PID:2972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1360-272-0x0000000003330000-0x000000000347A000-memory.dmp

Filesize
1.3MB

Download
memory/2972-273-0x0000000003260000-0x0000000003289000-memory.dmp

Filesize
164KB

Download
memory/3484-118-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

Filesize
64KB

Download
memory/3484-122-0x000001E78C9E0000-0x000001E78C9E2000-memory.dmp

Filesize
8KB

Download
memory/3484-121-0x000001E78C9E0000-0x000001E78C9E2000-memory.dmp

Filesize
8KB

Download
memory/3484-120-0x000001E78C9E0000-0x000001E78C9E2000-memory.dmp

Filesize
8KB

Download
memory/3484-119-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

Filesize
64KB

Download
memory/3484-115-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

Filesize
64KB

Download
memory/3484-117-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

Filesize
64KB

Download
memory/3484-116-0x00007FF9FB330000-0x00007FF9FB340000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads