618333fb5987ea84fc859f11c3f4b8ddcef811028f36011a277ba79126183550

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 07:42

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General

Target

618333fb5987ea84fc859f11c3f4b8ddcef811028f36011a277ba79126183550.xls
Size

47KB
MD5

a2aa76baceeec9d53c212bb30b202515
SHA1

d6c3ab92ce14e7700f0ac41af1a0a40b290a5539
SHA256

618333fb5987ea84fc859f11c3f4b8ddcef811028f36011a277ba79126183550
SHA512

68f2fba8236555cde6621dc82f07b9b7cd402a8069694e83aa95b8791e42360048e6a1382ac390baf54ffa91b88e6489680827e7ec03b5c0ea939bff161ee3a5
SSDEEP

768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxF6:462tfQXi8vgLZkTOHkQT51Vp6AwPe8go

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	2844	1320	regsvr32.exe	30

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
1320	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1320	EXCEL.EXE
1320	EXCEL.EXE
1320	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	EXCEL.EXE	32
PID 1320 wrote to memory of 2844	1320	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\618333fb5987ea84fc859f11c3f4b8ddcef811028f36011a277ba79126183550.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:1320
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2844

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/1320-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1320-1-0x000000007296D000-0x0000000072978000-memory.dmp

Filesize
44KB

Download
memory/1320-21-0x000000007296D000-0x0000000072978000-memory.dmp

Filesize
44KB

Download