6532b871f42e5f20153074f9dd666557f091b45b61c6ef3690ae0e5c26f1d44a

General

Target

51358.xlsm
Size

25KB
MD5

2def613694c2c79001ebe7a00de127bf
SHA1

d2b535ba47ff49102bbb33dfd09a819bfc119092
SHA256

6532b871f42e5f20153074f9dd666557f091b45b61c6ef3690ae0e5c26f1d44a
SHA512

8aaa1cc2ec898557edeaaf5ba763240b9a4e72f3fdb8f74d96c7a3d6b9e73bde853a86cd32f7f1dfe01448e95cf849d22a18be55785a8b07742c5ca741189a7d

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://eurobones.com.br/server.php

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

reg.exerundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	824	1832	reg.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	780	1832	rundll32.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

1832 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

pid	process
1832	EXCEL.EXE

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

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1832 EXCEL.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE
1832 EXCEL.EXE

pid	process
1832	EXCEL.EXE

pid	process
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE
1832	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1832 wrote to memory of 824	1832	EXCEL.EXE	reg.exe
PID 1832 wrote to memory of 824	1832	EXCEL.EXE	reg.exe
PID 1832 wrote to memory of 824	1832	EXCEL.EXE	reg.exe
PID 1832 wrote to memory of 824	1832	EXCEL.EXE	reg.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe
PID 1832 wrote to memory of 780	1832	EXCEL.EXE	rundll32.exe

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\51358.xlsm
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832

C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\ln3G.txt /y
2⤵
- Process spawned unexpected child process
PID:824

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\zTURnWKa.txt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:780

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\Documents\ln3G.txt
MD5
1084b35cb1aecef496dfdb263760a40c

SHA1
43d95f062749f3143838fe39460b3c5d541e194a

SHA256
48ccd7a8ed9873ff73eec7252ed9ce2882389aa43a5ec5ad072168c43320b25c

SHA512
9dbcfe0f39e04700f252b95cfb73a7977fe7a2ffe8de98510c9f62988300754c4e8eeb0a152ad87db71b28ee8c2fcb97d136215d2898ccbee5b8837a31eb7212

Download Submit
C:\Users\Public\Documents\zTURnWKa.txt
MD5
ef83a072106dae8b49ca0b643306daa4

SHA1
23efe1af6e85a7de7fc8bc1a54cc8cc823860920

SHA256
865495032940c1a573a836e2e1ab9e96eaf8b8cb753029bdfb5aa4458d8460ef

SHA512
5e9774ed2a53d74162a6df0b7c4539061514748dca4501763c43ae8d2609b6db96b63c91233201c9a597f5fdd7af6b23b6504941d699ac4551495797810c8471

Download Submit
memory/780-8-0x0000000000000000-mapping.dmp

Download
memory/780-9-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/824-5-0x0000000000000000-mapping.dmp

Download
memory/1312-7-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmp

Filesize
2.5MB

Download
memory/1832-2-0x000000002FF31000-0x000000002FF34000-memory.dmp

Filesize
12KB

Download
memory/1832-3-0x0000000071811000-0x0000000071813000-memory.dmp

Filesize
8KB

Download
memory/1832-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads