4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97

General

Target

4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97.xls
Size

47KB
MD5

86dc7893f44793c4316eeaf70ed0e295
SHA1

e797118e1e26a706b09f55f425eff851859607e3
SHA256

4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97
SHA512

1d4687c751cd7043940d55a7668d126bf9af481717e889b7904c452ce64a87e52346216993a731e3e29a98a86cf0d272a2747074a1d381515d59698e89276254
SSDEEP

768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFm:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gz

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2976	2588	regsvr32.exe	82

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
2588	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2588	EXCEL.EXE
2588	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE
2588	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 2976	2588	EXCEL.EXE	93
PID 2588 wrote to memory of 2976	2588	EXCEL.EXE	93

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97.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:2588
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2976

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
3KB

MD5
4bea385115d94e51bfd9af09deea8692

SHA1
f93a89da77809aa57889cb2133378c0bd1d92e05

SHA256
ddc990cfc598c7f9a67ed0b97ff8c350a667cc85e2c569da3cc67d4ab50f750d

SHA512
053dab8a15f39034e81d37268f3387691879030856699f85f4248e6255e9c7873b5f88d844e7dd3e7d2d6ebae594855259c8fea1e72a38c7a0200d4bdc1e146b

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

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/2588-7-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-11-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-5-0x00007FF9FED50000-0x00007FF9FED60000-memory.dmp

Filesize
64KB

Download
memory/2588-1-0x00007FFA3ED6D000-0x00007FFA3ED6E000-memory.dmp

Filesize
4KB

Download
memory/2588-6-0x00007FF9FED50000-0x00007FF9FED60000-memory.dmp

Filesize
64KB

Download
memory/2588-9-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-8-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-10-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-0-0x00007FF9FED50000-0x00007FF9FED60000-memory.dmp

Filesize
64KB

Download
memory/2588-4-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-14-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-13-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-12-0x00007FF9FCA50000-0x00007FF9FCA60000-memory.dmp

Filesize
64KB

Download
memory/2588-15-0x00007FF9FCA50000-0x00007FF9FCA60000-memory.dmp

Filesize
64KB

Download
memory/2588-2-0x00007FF9FED50000-0x00007FF9FED60000-memory.dmp

Filesize
64KB

Download
memory/2588-37-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-38-0x00007FFA3ED6D000-0x00007FFA3ED6E000-memory.dmp

Filesize
4KB

Download
memory/2588-39-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-40-0x00007FFA3ECD0000-0x00007FFA3EEC5000-memory.dmp

Filesize
2.0MB

Download
memory/2588-3-0x00007FF9FED50000-0x00007FF9FED60000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads