c342f7e0b2ed766ed2bbfc8a68481975d45d523b15f93a82d1eb67e108c27684

General

Target

c342f7e0b2ed766ed2bbfc8a68481975d45d523b15f93a82d1eb67e108c27684.xls
Size

47KB
MD5

a8731954da1354174433d7dcd0986ce7
SHA1

d6d55165450c4987079ab257a2f0b2f94e119712
SHA256

c342f7e0b2ed766ed2bbfc8a68481975d45d523b15f93a82d1eb67e108c27684
SHA512

b5fa3b3cb1c272a524975826a91dfdcfee7dc377b212e624b0b7c76144e3adb58b6c0bc0b472a7016e3fe5c0f4a0a6287f4ac5c26f62ec1bdc51d15a92f77935
SSDEEP

768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxFK:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gv

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	2888	4988	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
4988	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4988	EXCEL.EXE
4988	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE
4988	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 2888	4988	EXCEL.EXE	91
PID 4988 wrote to memory of 2888	4988	EXCEL.EXE	91

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c342f7e0b2ed766ed2bbfc8a68481975d45d523b15f93a82d1eb67e108c27684.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:4988
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2888

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
1KB

MD5
b546ca66de48b7fb0486314383cfdc0b

SHA1
f555beebc803332ba51378fdb248a74b18ae3787

SHA256
a56abec31b42cbc93a21edac88c6f524f188f527231381a531b82002496b442b

SHA512
f8c2b2ee7d0c07693b36b76d45598ffa627d28c63b97abd4f47e8dbfb8cc8c905e0b9f55bcc8031e51a35a8534b0b1841f384558afdcff455fd999b3d5ca34f7

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

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/4988-15-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp

Filesize
64KB

Download
memory/4988-14-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-5-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-4-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

Filesize
64KB

Download
memory/4988-6-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-9-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-8-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-10-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-11-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-13-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-0-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

Filesize
64KB

Download
memory/4988-1-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

Filesize
64KB

Download
memory/4988-12-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-7-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

Filesize
64KB

Download
memory/4988-17-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-16-0x00007FF8C4290000-0x00007FF8C42A0000-memory.dmp

Filesize
64KB

Download
memory/4988-18-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-21-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-20-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-19-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-3-0x00007FF9067AD000-0x00007FF9067AE000-memory.dmp

Filesize
4KB

Download
memory/4988-43-0x00007FF906710000-0x00007FF906905000-memory.dmp

Filesize
2.0MB

Download
memory/4988-2-0x00007FF8C6790000-0x00007FF8C67A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads