4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97

Analysis

max time kernel
120s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 22:35

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General

Target

4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97.xls
Size

47KB
MD5

86dc7893f44793c4316eeaf70ed0e295
SHA1

e797118e1e26a706b09f55f425eff851859607e3
SHA256

4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97
SHA512

1d4687c751cd7043940d55a7668d126bf9af481717e889b7904c452ce64a87e52346216993a731e3e29a98a86cf0d272a2747074a1d381515d59698e89276254
SSDEEP

768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFm:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gz

Score

10^/10

discovery

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1048	2444	regsvr32.exe	29

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2444	EXCEL.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32
PID 2444 wrote to memory of 1048	2444	EXCEL.EXE	32

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\4a221e5a4ff5823f78170713306f6abbdfae1f782cb02a6b90b8ceabb42a7c97.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:1048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\wnrul.ocx

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/2444-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2444-1-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

Filesize
44KB

Download
memory/2444-21-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

Filesize
44KB

Download