15114aef4358bb9c224cf71b19f0391d07395214818d48c0e5b23898ce860f6b

Analysis

max time kernel
207s
max time network
210s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 14:40

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General

Target

15114AEF4358BB9C224CF71B19F0391D07395214818D48C0E5B23898CE860F6B.xls
Size

217KB
MD5

fdb8633bcfc132f6013509c79a1cbeaf
SHA1

32290bd2c2b64671c91905f3c79c4c54f5349fa5
SHA256

15114aef4358bb9c224cf71b19f0391d07395214818d48c0e5b23898ce860f6b
SHA512

4989754fd8c10269e7efe52f6f8f0ced3dca0e6f2f9ac8d7ff16daf0bacb283e06a8c9bf732bec3267e4286feda81af80298a3e6d7758fe258057d05ce94ff9d
SSDEEP

6144:zKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgQyY+TAQXTHGUMEyP5p6f5jQml:CbGUMVWlbl

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://designelis.com.br/wp-content/NNfbZZegI/

xlm40.dropper

http://copayucatan.com.mx/wp-includes/BqaJMpC3osZ0LRnKK/

xlm40.dropper

http://cursosweb.com.br/portal/6ozjR/

xlm40.dropper

http://db.rikaz.tech/lCx76IlkrBtEsqNFA7/

Signatures

Process spawned unexpected child process 4 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.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	508	3204	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3468	3204	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3940	3204	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3956	3204	regsvr32.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

3204 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE
3204	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3204 wrote to memory of 508	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 508	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3468	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3468	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3940	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3940	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3956	3204	EXCEL.EXE	regsvr32.exe
PID 3204 wrote to memory of 3956	3204	EXCEL.EXE	regsvr32.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\15114AEF4358BB9C224CF71B19F0391D07395214818D48C0E5B23898CE860F6B.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3204

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
2⤵
- Process spawned unexpected child process
PID:508

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
2⤵
- Process spawned unexpected child process
PID:3468

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
2⤵
- Process spawned unexpected child process
PID:3940

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
2⤵
- Process spawned unexpected child process
PID:3956

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/508-139-0x0000000000000000-mapping.dmp

Download
memory/3204-132-0x00007FFBEFBD0000-0x00007FFBEFBE0000-memory.dmp

Filesize
64KB

Download
memory/3204-133-0x00007FFBEFBD0000-0x00007FFBEFBE0000-memory.dmp

Filesize
64KB

Download
memory/3204-134-0x00007FFBEFBD0000-0x00007FFBEFBE0000-memory.dmp

Filesize
64KB

Download
memory/3204-135-0x00007FFBEFBD0000-0x00007FFBEFBE0000-memory.dmp

Filesize
64KB

Download
memory/3204-136-0x00007FFBEFBD0000-0x00007FFBEFBE0000-memory.dmp

Filesize
64KB

Download
memory/3204-137-0x00007FFBEDA70000-0x00007FFBEDA80000-memory.dmp

Filesize
64KB

Download
memory/3204-138-0x00007FFBEDA70000-0x00007FFBEDA80000-memory.dmp

Filesize
64KB

Download
memory/3468-140-0x0000000000000000-mapping.dmp

Download
memory/3940-141-0x0000000000000000-mapping.dmp

Download
memory/3956-142-0x0000000000000000-mapping.dmp

Download