11f02791e9149ac8e49c635baeb6ba319bfd7542943f68cadb1f9858fb343e73

General

Target

11f02791e9149ac8e49c635baeb6ba319bfd7542943f68cadb1f9858fb343e73.xls
Size

47KB
MD5

c9c06cb5325b0fd1e8221906961adec2
SHA1

d43ed3e249587707697e03385bc52780d762aebf
SHA256

11f02791e9149ac8e49c635baeb6ba319bfd7542943f68cadb1f9858fb343e73
SHA512

347c8a2f3b900b0a062be5bb693fe31b8645f59ecea2e93b8127dfa8c9ee161a34d8ef6d0c65d358c7641ae4b30e654e834d90fc011e224c5228b3559bc180c9
SSDEEP

768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFG:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gT

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://www.escueladecinemza.com.ar/_installation/IBlj/

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

regsvr32.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4576	3844	regsvr32.exe	81

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 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

Processes:

EXCEL.EXE

pid	Process
3844	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid	Process
3844	EXCEL.EXE
3844	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	Process
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE
3844	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	Process	procid_target
PID 3844 wrote to memory of 4576	3844	EXCEL.EXE	89
PID 3844 wrote to memory of 4576	3844	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\11f02791e9149ac8e49c635baeb6ba319bfd7542943f68cadb1f9858fb343e73.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:3844
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
659B

MD5
a458600a89c100ac508ce243363ebc6a

SHA1
c3c2ddcd80552300fd85547493a8d097c167bf1f

SHA256
14f349374c010c8d4dfee77c0850a7aec7f03eb81acdd39c6869da4c827f597f

SHA512
0eea449155700dc44c3237c68116ef9de0396dd1fdaa8c5ebdf345829c34325bd924588675b2b88afab3657475cf5c223b07ae4d6a08dcc559e8b3c4982198aa

Download Submit
C:\Users\Admin\wnrul.ocx

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/3844-14-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-15-0x00007FF89CEB0000-0x00007FF89CEC0000-memory.dmp

Filesize
64KB

Download
memory/3844-4-0x00007FF89F430000-0x00007FF89F440000-memory.dmp

Filesize
64KB

Download
memory/3844-6-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-11-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-10-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-9-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-13-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-0-0x00007FF89F430000-0x00007FF89F440000-memory.dmp

Filesize
64KB

Download
memory/3844-1-0x00007FF89F430000-0x00007FF89F440000-memory.dmp

Filesize
64KB

Download
memory/3844-12-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-16-0x00007FF89CEB0000-0x00007FF89CEC0000-memory.dmp

Filesize
64KB

Download
memory/3844-8-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-5-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-7-0x00007FF89F430000-0x00007FF89F440000-memory.dmp

Filesize
64KB

Download
memory/3844-2-0x00007FF89F430000-0x00007FF89F440000-memory.dmp

Filesize
64KB

Download
memory/3844-38-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-39-0x00007FF8DF3B0000-0x00007FF8DF5A5000-memory.dmp

Filesize
2.0MB

Download
memory/3844-3-0x00007FF8DF44D000-0x00007FF8DF44E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads