a598cd88d7fc4911786bb3a49f556bdc39d66faf40d4cc00f48ab241c4a8bcbe

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20-11-2024 18:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

a598cd88d7fc4911786bb3a49f556bdc39d66faf40d4cc00f48ab241c4a8bcbe.xls
Size

47KB
MD5

8d90f5d2a192a97a0db03b2bb2dcf118
SHA1

86076223203c34fe561da496ae73f96e488b3d31
SHA256

a598cd88d7fc4911786bb3a49f556bdc39d66faf40d4cc00f48ab241c4a8bcbe
SHA512

3f0413de02a4243f23e25a95e853db49b7803eb852e3fb4024bb96989de4d473b70d0edb272a969b6f196f42832ae934628343f88cd9001909607856a2e71cac
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.

Processes:

regsvr32.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2392	1700	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

Processes:

regsvr32.exeEXCEL.EXE

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

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid	Process
1700	EXCEL.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid	Process
1700	EXCEL.EXE
1700	EXCEL.EXE
1700	EXCEL.EXE
1700	EXCEL.EXE
1700	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	Process	procid_target
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31
PID 1700 wrote to memory of 2392	1700	EXCEL.EXE	31

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\a598cd88d7fc4911786bb3a49f556bdc39d66faf40d4cc00f48ab241c4a8bcbe.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:1700
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2392

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\wnrul.ocx

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/1700-1-0x000000007226D000-0x0000000072278000-memory.dmp

Filesize
44KB

Download
memory/1700-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1700-18-0x000000007226D000-0x0000000072278000-memory.dmp

Filesize
44KB

Download