622c13931804d23989afdac6bed1939ae87a5a6f7af4f1fabe41e7b7548a0ff1

General

Target

622c13931804d23989afdac6bed1939ae87a5a6f7af4f1fabe41e7b7548a0ff1.xls
Size

47KB
MD5

3e45f81a3c79e4f1852e6bd98c5a1056
SHA1

a542bb75cf1522cdedd8555be66c5c2908fde6d7
SHA256

622c13931804d23989afdac6bed1939ae87a5a6f7af4f1fabe41e7b7548a0ff1
SHA512

9d2a86625028346e15649d8107132eb34eaa792fab3bc166344bd40d96b26b1d81ce4ec71d12d699d721a61610ecef1390f904ba597e2ec56fcb2ea0933dbbd1
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	4936	5000	regsvr32.exe	84

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
5000	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5000	EXCEL.EXE
5000	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE
5000	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 4936	5000	EXCEL.EXE	93
PID 5000 wrote to memory of 4936	5000	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\622c13931804d23989afdac6bed1939ae87a5a6f7af4f1fabe41e7b7548a0ff1.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:5000
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32.exe ..\wnrul.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4936

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
78d7877827d5bc6ff7495abedb7e934f

SHA1
0ef8708b843cfbce1798dda70dc7267f00547df9

SHA256
7e8d051eddfd470a73573aa5e32521a7df62d99cd983156ef2c3244508ec8331

SHA512
27ff02b45ae5c48b62313b8db3d0dc5cda156a0e34762ef2c4c46e95275fc265b0e8e37ef60bd6daf80ef35b1a7edf425897b8c4746a812051f49ae1b60d82e5

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

Filesize
86KB

MD5
dfdb83bd3445e3f2ea46b104976c8d43

SHA1
78e1237f69e9ba18a68a2c72b6a78179fc01c29b

SHA256
76e4a6a2d7ade92678bdc5dd447199ce8f16496d32b36b000726053a89e89443

SHA512
6950cad2b1e7f9a20015ee358a44a7def9db96cb395c21a21fece6348e24cf4d307e10091b5f84edeb84368d9f435a82366ed992bcb372e078571a7b97cc328a

Download Submit
memory/5000-12-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-16-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-4-0x00007FF9BACF0000-0x00007FF9BAD00000-memory.dmp

Filesize
64KB

Download
memory/5000-5-0x00007FF9BACF0000-0x00007FF9BAD00000-memory.dmp

Filesize
64KB

Download
memory/5000-6-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-9-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-0-0x00007FF9BACF0000-0x00007FF9BAD00000-memory.dmp

Filesize
64KB

Download
memory/5000-11-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-13-0x00007FF9B8A20000-0x00007FF9B8A30000-memory.dmp

Filesize
64KB

Download
memory/5000-10-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-14-0x00007FF9B8A20000-0x00007FF9B8A30000-memory.dmp

Filesize
64KB

Download
memory/5000-8-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-15-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-19-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-1-0x00007FF9FAD0D000-0x00007FF9FAD0E000-memory.dmp

Filesize
4KB

Download
memory/5000-21-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-3-0x00007FF9BACF0000-0x00007FF9BAD00000-memory.dmp

Filesize
64KB

Download
memory/5000-20-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-18-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-17-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-22-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-7-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-23-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-45-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-46-0x00007FF9FAD0D000-0x00007FF9FAD0E000-memory.dmp

Filesize
4KB

Download
memory/5000-47-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-48-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-49-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-53-0x00007FF9FAC70000-0x00007FF9FAE65000-memory.dmp

Filesize
2.0MB

Download
memory/5000-2-0x00007FF9BACF0000-0x00007FF9BAD00000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads