aed5f5bbec1f7f8ea9010f7388f76b801b443c5ce691d0c008b6058f290e51da

General

Target
23.xlsb
Size 81KB
Sample210226-yf5ymkffcx
SHA256 aed5f5bbec1f7f8ea9010f7388f76b801b443c5ce691d0c008b6058f290e51da
MD5 3079d4778cfc7959eb2a7e54a57769a4
SHA1 13074fe13d6dd531e4f5293c3e15eaa8ed6208a4
SHA512 09a6cb132c84a015b504ce7e10c700dd4b78a36b1d514b4d8f92dca444017aec883a71600776e41ec9924f786cb9aed0256beccc541ac665566fd99875272eb5
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://195.123.220.249/campo/t2/t2

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	816	548	rundll32.exe	24

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

description	ioc	Process
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
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
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
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

pid	Process
548	EXCEL.EXE

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE
548	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31
PID 548 wrote to memory of 816	548	EXCEL.EXE	31

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\23.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\ProgramData\qoqw\8332.dll,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:816

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/548-2-0x000000002FC11000-0x000000002FC14000-memory.dmp

Download

memory/548-3-0x0000000071771000-0x0000000071773000-memory.dmp

Download

memory/548-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Download

memory/816-7-0x0000000076381000-0x0000000076383000-memory.dmp

Download

memory/1184-5-0x000007FEF6580000-0x000007FEF67FA000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads