4fdcaa67e5d878fee04e30c54284cbb6e257a22a433058487b39ab68ca1fb620

Analysis

max time kernel
149s
max time network
146s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
10/11/2022, 00:05

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General

Target
4fdcaa67e5d878fee04e30c54284cbb6e257a22a433058487b39ab68ca1fb620.xls
Size 91KB
Sample221110-adh2ladca9
SHA256 4fdcaa67e5d878fee04e30c54284cbb6e257a22a433058487b39ab68ca1fb620
MD5 eeae2502d02e8e9491a17b782c028d28
SHA1 619b74fe7736cbc7f5e3aacc35932cd5766440c7
SHA512 bb48d9da57b14032794d3293263b61aa0c71e44312f7c99e1a2d2011dd2d5efa1fcfb752383b252111d1e75130bcc7193a2b3e722d803fee318dd1d7b397c9e8
SSDEEP 1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgMbCXuZH4gb4CEn9J4ZyX3O:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
https://encuadernacionesartis.com/Vk2Z1Na/IZpyySkbU/
xlm40.dropper
http://eznetb.synology.me/@eaDir/E36Y/
xlm40.dropper
http://bytesendesign.nl/cgi-bin/LolX/
xlm40.dropper
http://choltice.eu/mwc/syl3Y/

Signatures

Process spawned unexpected child process 4 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	4952	4124	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3908	4124	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4912	4124	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4832	4124	regsvr32.exe	65

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
4124	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4124	EXCEL.EXE
4124	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4124 wrote to memory of 4952	4124	EXCEL.EXE	68
PID 4124 wrote to memory of 4952	4124	EXCEL.EXE	68
PID 4124 wrote to memory of 3908	4124	EXCEL.EXE	69
PID 4124 wrote to memory of 3908	4124	EXCEL.EXE	69
PID 4124 wrote to memory of 4912	4124	EXCEL.EXE	70
PID 4124 wrote to memory of 4912	4124	EXCEL.EXE	70
PID 4124 wrote to memory of 4832	4124	EXCEL.EXE	71
PID 4124 wrote to memory of 4832	4124	EXCEL.EXE	71

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4fdcaa67e5d878fee04e30c54284cbb6e257a22a433058487b39ab68ca1fb620.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:4124
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4952
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3908
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4912
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:4832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4124-120-0x00007FFAA4D70000-0x00007FFAA4D80000-memory.dmp

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memory/4124-121-0x00007FFAA4D70000-0x00007FFAA4D80000-memory.dmp

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memory/4124-122-0x00007FFAA4D70000-0x00007FFAA4D80000-memory.dmp

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memory/4124-123-0x00007FFAA4D70000-0x00007FFAA4D80000-memory.dmp

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memory/4124-132-0x00007FFAA1E80000-0x00007FFAA1E90000-memory.dmp

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memory/4124-133-0x00007FFAA1E80000-0x00007FFAA1E90000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads