227ab09ecf6ffc8a7608421a44885cd21433adf98ea1dd4c5b54746dd765ef8e

General

Target

9844.xlsm
Size

25KB
MD5

a0b1853b1dc98e17e8b1040e9b14bc1f
SHA1

773fcf8705a6e13102fabf00d96f7d7dfb63aeb8
SHA256

227ab09ecf6ffc8a7608421a44885cd21433adf98ea1dd4c5b54746dd765ef8e
SHA512

a9046086128f62da7947b85f4d3a6a79125b95836aec475fed29299016f8109581ad3ab30cd7362000d874ff7b252dc1c1807e5a047e7d8328a4c4473e0cadf4

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://catedraloor.com/server.php

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	708	296	reg.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1520	296	rundll32.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

296 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

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
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

296 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

296 EXCEL.EXE
296 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE
296	EXCEL.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 296 wrote to memory of 708	296	EXCEL.EXE	reg.exe
PID 296 wrote to memory of 708	296	EXCEL.EXE	reg.exe
PID 296 wrote to memory of 708	296	EXCEL.EXE	reg.exe
PID 296 wrote to memory of 708	296	EXCEL.EXE	reg.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	EXCEL.EXE	rundll32.exe
PID 296 wrote to memory of 1520	296	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\9844.xlsm
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:296

C:\Windows\SysWOW64\reg.exe
"C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\14.0\Excel\Security C:\Users\Public\Documents\d4Mclm5.txt /y
2⤵
- Process spawned unexpected child process
PID:708

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\YzAA4aJL.txt,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1520

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\YzAA4aJL.txt
MD5
3c13f2b85f1126c261bd368d8a35a20a

SHA1
b5854d2d4eb06023cdee8d02d653c40c644b20bd

SHA256
c0433943a6b6c6918ff92e7cdef01430d6fcc238081e199b742b53d00d013ee0

SHA512
7c6260f86112e54877e1d1ab14b9a2f1b65542ae34bb6cb75d09046e5d2e8570f2aa3ce79a0f2d18896fe22cbaa9239a0ade89286ef2a39da1e66a07c1e8a63e

Download Submit
C:\Users\Public\Documents\d4Mclm5.txt
MD5
1084b35cb1aecef496dfdb263760a40c

SHA1
43d95f062749f3143838fe39460b3c5d541e194a

SHA256
48ccd7a8ed9873ff73eec7252ed9ce2882389aa43a5ec5ad072168c43320b25c

SHA512
9dbcfe0f39e04700f252b95cfb73a7977fe7a2ffe8de98510c9f62988300754c4e8eeb0a152ad87db71b28ee8c2fcb97d136215d2898ccbee5b8837a31eb7212

Download Submit
memory/296-2-0x000000002FD51000-0x000000002FD54000-memory.dmp

Filesize
12KB

Download
memory/296-3-0x0000000071771000-0x0000000071773000-memory.dmp

Filesize
8KB

Download
memory/296-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/296-5-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/328-8-0x000007FEF6460000-0x000007FEF66DA000-memory.dmp

Filesize
2.5MB

Download
memory/708-6-0x0000000000000000-mapping.dmp

Download
memory/1520-9-0x0000000000000000-mapping.dmp

Download
memory/1520-10-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads