f28a5799a09b0c08a171c850e770d0ad4d81b5b70ed589ddea12a7c616405301

General

Target

file.doc
Size

1.3MB
MD5

d1faac2c31205b310f8d189f12716a99
SHA1

74dec0c267e39b48b3832fd8f47a729e7396a41c
SHA256

f28a5799a09b0c08a171c850e770d0ad4d81b5b70ed589ddea12a7c616405301
SHA512

f6a8bc6f01dc4cbe59dd7a47ded1ac3bda255476b2621d97ee3614d4b1d09f3804b26146da72fe2785d7f44ac8d93d2c6993df5944db53f42ac1a430cb26a7b1

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Office loads VBA resources, possible macro or embedded object present

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1652 WINWORD.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

1652 WINWORD.EXE
1652 WINWORD.EXE
1652 WINWORD.EXE
1652 WINWORD.EXE
1652 WINWORD.EXE
1652 WINWORD.EXE
1652 WINWORD.EXE

pid	process
1652	WINWORD.EXE

pid	process
1652	WINWORD.EXE
1652	WINWORD.EXE
1652	WINWORD.EXE
1652	WINWORD.EXE
1652	WINWORD.EXE
1652	WINWORD.EXE
1652	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 1652 wrote to memory of 1972	1652	WINWORD.EXE	splwow64.exe
PID 1652 wrote to memory of 1972	1652	WINWORD.EXE	splwow64.exe
PID 1652 wrote to memory of 1972	1652	WINWORD.EXE	splwow64.exe
PID 1652 wrote to memory of 1972	1652	WINWORD.EXE	splwow64.exe

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\file.doc"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1652

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1972

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1652-59-0x0000000072661000-0x0000000072664000-memory.dmp

Filesize
12KB

Download
memory/1652-60-0x00000000700E1000-0x00000000700E3000-memory.dmp

Filesize
8KB

Download
memory/1652-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1972-62-0x0000000000000000-mapping.dmp

Download
memory/1972-63-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

Filesize
8KB

Download

Analysis

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