69e2d449d9caa33cad124a748e55221bbe3aaf17500711b65989a4694625ea86

General

Target

comun_1338.xlsb
Size

65KB
MD5

f84ec393f8280213b4df97a50c8b6de7
SHA1

08b6ca2e9656373735a68dbf0a70506bb128957a
SHA256

69e2d449d9caa33cad124a748e55221bbe3aaf17500711b65989a4694625ea86
SHA512

9b7b93cb165d54f22cc26e4eb0372f19196ae97195ec6b68175011a46bd282d471bb15893cfaf6e8f7e0a6cd4afcd964a5bc13e1d04e73c585b4691109a651a7

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://onlinestatis.bar/signup.jpg

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	1156	276	rundll32.exe	EXCEL.EXE

Office loads VBA resources, possible macro or embedded object present
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
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
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 (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
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\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

276 EXCEL.EXE
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

EXCEL.EXE

pid process

276 EXCEL.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

rundll32.exe

pid process

1156 rundll32.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

276 EXCEL.EXE
276 EXCEL.EXE
276 EXCEL.EXE
276 EXCEL.EXE
276 EXCEL.EXE

pid	process
276	EXCEL.EXE

pid	process
276	EXCEL.EXE

pid	process
1156	rundll32.exe

pid	process
276	EXCEL.EXE
276	EXCEL.EXE
276	EXCEL.EXE
276	EXCEL.EXE
276	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	EXCEL.EXE	rundll32.exe
PID 276 wrote to memory of 1156	276	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\comun_1338.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:276

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\djfruJe\gpzuYnG\GDwPMjF.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
- Suspicious use of FindShellTrayWindow
PID:1156

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

memory/276-2-0x000000002F2C1000-0x000000002F2C4000-memory.dmp

Filesize
12KB

Download
memory/276-3-0x00000000715E1000-0x00000000715E3000-memory.dmp

Filesize
8KB

Download
memory/276-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1156-6-0x0000000000000000-mapping.dmp

Download
memory/1156-7-0x00000000765E1000-0x00000000765E3000-memory.dmp

Filesize
8KB

Download
memory/1216-5-0x000007FEF63D0000-0x000007FEF664A000-memory.dmp

Filesize
2.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads