e491bd760f61cc7a384fa97cb84877887aaad5d97bc7bcce0b15e0960927e46e

General

Target

Invoice Bayer Ltd.docx
Size

54KB
MD5

ca4344d6a93c4826767b73f99ce6d8c2
SHA1

16b3e26c6f8373fff62ee8391703a258428a7653
SHA256

e491bd760f61cc7a384fa97cb84877887aaad5d97bc7bcce0b15e0960927e46e
SHA512

0fee5ae4e1f975966d31423b11080f3c8f7b968bedd129ca6fb8701f28cc779561c93baac68d95bdf2305815f15543a1448495cb89cd449983aa63413066e524

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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

1080 WINWORD.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1080 WINWORD.EXE
1080 WINWORD.EXE

pid	process
1080	WINWORD.EXE

pid	process
1080	WINWORD.EXE
1080	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 1080 wrote to memory of 540	1080	WINWORD.EXE	splwow64.exe
PID 1080 wrote to memory of 540	1080	WINWORD.EXE	splwow64.exe
PID 1080 wrote to memory of 540	1080	WINWORD.EXE	splwow64.exe
PID 1080 wrote to memory of 540	1080	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\Invoice Bayer Ltd.docx"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1080

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:540

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/540-64-0x0000000000000000-mapping.dmp

Download
memory/540-65-0x000007FEFC251000-0x000007FEFC253000-memory.dmp

Filesize
8KB

Download
memory/1080-60-0x0000000072D51000-0x0000000072D54000-memory.dmp

Filesize
12KB

Download
memory/1080-61-0x00000000707D1000-0x00000000707D3000-memory.dmp

Filesize
8KB

Download
memory/1080-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1080-63-0x0000000075D11000-0x0000000075D13000-memory.dmp

Filesize
8KB

Download

Analysis

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