931dfa85b1d35c0fcb1ec21609a08f96bdbdd35eafd6b6ba0b364ed990f043a6

Analysis

max time kernel
149s
max time network
147s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
04/11/2022, 12:29

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

931dfa85b1d35c0fcb1ec21609a08f96bdbdd35eafd6b6ba0b364ed990f043a6.xls
Size

217KB
MD5

162609f44e112d0a9edd49ffacc23541
SHA1

1fae5b52067c2a26268cd160d70d81d8da21dc55
SHA256

931dfa85b1d35c0fcb1ec21609a08f96bdbdd35eafd6b6ba0b364ed990f043a6
SHA512

6710bdbc54c70605b3c349dd960e83bdba0abb3c1c82897f271fee35cfd9ba67f7293159f1997b8bcfe830ee998f407fa3563f730d3e64fcfa4e4bd1628206f5
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgIyY+TAQXTHGUMEyP5p6f5jQmG:bbGUMVWlbG

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://cursosinterativos.com.br/semprichickoff2/pEl/

xlm40.dropper

http://mulmatdol.com/adm/Fa/

xlm40.dropper

http://www.tugarden.com/docs/csv_import/rf6bMPAtbBPiDK/

xlm40.dropper

http://www.darularqompatean.com/asq/IcVMFfwR65Yf8fMd5G/

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	3588	1716	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4724	1716	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4696	1716	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5020	1716	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
1716	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1716	EXCEL.EXE
1716	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE
1716	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 3588	1716	EXCEL.EXE	68
PID 1716 wrote to memory of 3588	1716	EXCEL.EXE	68
PID 1716 wrote to memory of 4724	1716	EXCEL.EXE	69
PID 1716 wrote to memory of 4724	1716	EXCEL.EXE	69
PID 1716 wrote to memory of 4696	1716	EXCEL.EXE	70
PID 1716 wrote to memory of 4696	1716	EXCEL.EXE	70
PID 1716 wrote to memory of 5020	1716	EXCEL.EXE	71
PID 1716 wrote to memory of 5020	1716	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\931dfa85b1d35c0fcb1ec21609a08f96bdbdd35eafd6b6ba0b364ed990f043a6.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:1716
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3588
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4724
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4696
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:5020

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1716-120-0x00007FF9D0A10000-0x00007FF9D0A20000-memory.dmp

Filesize
64KB

Download
memory/1716-121-0x00007FF9D0A10000-0x00007FF9D0A20000-memory.dmp

Filesize
64KB

Download
memory/1716-122-0x00007FF9D0A10000-0x00007FF9D0A20000-memory.dmp

Filesize
64KB

Download
memory/1716-123-0x00007FF9D0A10000-0x00007FF9D0A20000-memory.dmp

Filesize
64KB

Download
memory/1716-132-0x00007FF9CDEC0000-0x00007FF9CDED0000-memory.dmp

Filesize
64KB

Download
memory/1716-133-0x00007FF9CDEC0000-0x00007FF9CDED0000-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