4f86706094fda2128d60a6021e2f4f0268793c1d2deeb9f23e608b06b0e9179f

Analysis

max time kernel
112s
max time network
50s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 19:26

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General

Target

Ҵֱ20%ϵ/߲/K4߲һ10.28.xls
Size

1.3MB
MD5

21540c1229339631c50a436ba8495563
SHA1

b477b802a7d4ded7dc7eb352b724566499b1a642
SHA256

ea321a3f8f10906abda978e4778c9ffde3b2fed64fa4905964bd1b4a55005952
SHA512

8ecc4e8d35e8db646f3caee13cc3deba80702f485c488cc7c51a00e3343237265cb0ea0e9e6d0bca67eee93dc20a680f2e93a888de6048a47937d98e211f64fb
SSDEEP

12288:t919XK0Z/Z7Mbr4Jv5+t7dElqIxb+8ylA3EvXd:fOt7WlbxbL3E

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

cmd.execmd.execmd.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	588	1728	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	596	1728	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1464	1728	cmd.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
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1728 EXCEL.EXE
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXE

pid process

1728 EXCEL.EXE
1728 EXCEL.EXE
1728 EXCEL.EXE
1728 EXCEL.EXE

pid	process
1728	EXCEL.EXE

pid	process
1728	EXCEL.EXE
1728	EXCEL.EXE
1728	EXCEL.EXE
1728	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1728 wrote to memory of 1952	1728	EXCEL.EXE	splwow64.exe
PID 1728 wrote to memory of 1952	1728	EXCEL.EXE	splwow64.exe
PID 1728 wrote to memory of 1952	1728	EXCEL.EXE	splwow64.exe
PID 1728 wrote to memory of 1952	1728	EXCEL.EXE	splwow64.exe
PID 1728 wrote to memory of 588	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 588	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 588	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 588	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 596	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 596	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 596	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 596	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 1464	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 1464	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 1464	1728	EXCEL.EXE	cmd.exe
PID 1728 wrote to memory of 1464	1728	EXCEL.EXE	cmd.exe
PID 588 wrote to memory of 280	588	cmd.exe	attrib.exe
PID 588 wrote to memory of 280	588	cmd.exe	attrib.exe
PID 588 wrote to memory of 280	588	cmd.exe	attrib.exe
PID 588 wrote to memory of 280	588	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

280 attrib.exe

pid	process
280	attrib.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\Ҵֱ20%ϵ\߲\K4߲һ10.28.xls
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1952

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:588

C:\Windows\SysWOW64\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:280

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:596

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:1464

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/280-64-0x0000000000000000-mapping.dmp

Download
memory/588-61-0x0000000000000000-mapping.dmp

Download
memory/596-62-0x0000000000000000-mapping.dmp

Download
memory/1464-63-0x0000000000000000-mapping.dmp

Download
memory/1728-54-0x000000002FF51000-0x000000002FF54000-memory.dmp

Filesize
12KB

Download
memory/1728-55-0x00000000712F1000-0x00000000712F3000-memory.dmp

Filesize
8KB

Download
memory/1728-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1728-57-0x00000000722DD000-0x00000000722E8000-memory.dmp

Filesize
44KB

Download
memory/1728-58-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download
memory/1728-65-0x00000000722DD000-0x00000000722E8000-memory.dmp

Filesize
44KB

Download
memory/1952-59-0x0000000000000000-mapping.dmp

Download
memory/1952-60-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads