dcc6409e704780116523a3e6ca35edf1399b381568d26b6d0373d1d9e00be491

General

Target

ynbrpsak.xlsm
Size

46KB
MD5

969869a41c8f52fc0853eaaba007be0f
SHA1

7d1c58a56647a9f3ede204d60fa0e6813d1ad8d1
SHA256

dcc6409e704780116523a3e6ca35edf1399b381568d26b6d0373d1d9e00be491
SHA512

c4a1a7ff06d4b59ed39640ca213bc1640907b304b613e47b9fe3561cd7caf6acb4f0c9a0fe19c9bb79b86dcbcae51bebec1831c732396cb1294b2860bd387c86

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://eles-tech.com/css/KzMysMqFMs/

xlm40.dropper

http://gonorthhalifax.com/wp-content/yTmYyLbTKZV2czsUO/

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	1248	5012	regsvr32.exe	79

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 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

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

pid	Process
5012	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5012 wrote to memory of 1248	5012	EXCEL.EXE	81
PID 5012 wrote to memory of 1248	5012	EXCEL.EXE	81
PID 5012 wrote to memory of 1248	5012	EXCEL.EXE	81

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ynbrpsak.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5012
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
  2⤵
  - Process spawned unexpected child process
  PID:1248

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\xewn.dll

Filesize
677KB

MD5
e15f117276b3153d5b1dd3901e76931f

SHA1
bb395f34238382e3c441648a94a10f881bf4dc59

SHA256
d742595c4c90aa02771fcab5fb136e00da859386524ac11c301acdecd8f24136

SHA512
bb9c2e4ce067277b66ccd025cf91e074c5035264cd21c86023f6a3c10159d5ce76fba8cc23b5095e18c4d5cbc8b7118d4cb7d380937f1ab5b5344f4e33c14e90

Download Submit
memory/5012-130-0x00007FFE5E3D0000-0x00007FFE5E3E0000-memory.dmp

Filesize
64KB

Download
memory/5012-131-0x00007FFE5E3D0000-0x00007FFE5E3E0000-memory.dmp

Filesize
64KB

Download
memory/5012-132-0x00007FFE5E3D0000-0x00007FFE5E3E0000-memory.dmp

Filesize
64KB

Download
memory/5012-133-0x00007FFE5E3D0000-0x00007FFE5E3E0000-memory.dmp

Filesize
64KB

Download
memory/5012-134-0x00007FFE5E3D0000-0x00007FFE5E3E0000-memory.dmp

Filesize
64KB

Download
memory/5012-135-0x00007FFE5C370000-0x00007FFE5C380000-memory.dmp

Filesize
64KB

Download
memory/5012-136-0x00007FFE5C370000-0x00007FFE5C380000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads