0a77c980c1b6ad85ffb3f1e8e814f96e09d5033d82dce7ca2062b992372c85e6

Analysis

max time kernel
146s
max time network
35s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 19:26

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General

Target

答辩16日第9组.xls
Size

102KB
MD5

2269705b0b0087eeeaa0e898ca3d6a58
SHA1

e78bab8a55d6e9859455572f55061729f25ff9f1
SHA256

418cbd99460c6c24ddd1aa7072e2a2a1d3c4a5546aa75d0e11b034015488b041
SHA512

9ebd0a1820f06d5bccd3088a451c42f30d0edf17246ff3c7deb8d42c047e972d528310a8755fb965546700995f40754ef82c034f9d23370722250de0a35354ac
SSDEEP

1536:LQQQca5QyDHBWVbrzlp7ITkR62lGM88wcJtXwRlM2M/M/EbdF:+WVbrz/7ITk9tjDJtXw45kYdF

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	564	1200	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1556	1200	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1580	1200	cmd.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

1200 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

pid	process
1200	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-1-5-21-3385717845-2518323428-350143044-1000\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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\3BED6000\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1200 EXCEL.EXE
Suspicious behavior: RenamesItself 1 IoCs

Processes:

EXCEL.EXE

pid process

1200 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1200 EXCEL.EXE
1200 EXCEL.EXE
1200 EXCEL.EXE
1200 EXCEL.EXE
1200 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\3BED6000\:Zone.Identifier:$DATA	EXCEL.EXE

pid	process
1200	EXCEL.EXE

pid	process
1200	EXCEL.EXE

pid	process
1200	EXCEL.EXE
1200	EXCEL.EXE
1200	EXCEL.EXE
1200	EXCEL.EXE
1200	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1200 wrote to memory of 564	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 564	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 564	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 564	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1556	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1556	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1556	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1556	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1580	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1580	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1580	1200	EXCEL.EXE	cmd.exe
PID 1200 wrote to memory of 1580	1200	EXCEL.EXE	cmd.exe
PID 564 wrote to memory of 364	564	cmd.exe	attrib.exe
PID 564 wrote to memory of 364	564	cmd.exe	attrib.exe
PID 564 wrote to memory of 364	564	cmd.exe	attrib.exe
PID 564 wrote to memory of 364	564	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

364 attrib.exe

pid	process
364	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\答辩16日第9组.xls
1⤵
- Deletes itself
- Enumerates system info in registry
- Modifies Internet Explorer settings
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: RenamesItself
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1200

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:564

C:\Windows\SysWOW64\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:364

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:1556

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:1580

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/364-223-0x0000000000000000-mapping.dmp

Download
memory/564-220-0x0000000000000000-mapping.dmp

Download
memory/1200-54-0x000000002FF71000-0x000000002FF74000-memory.dmp

Filesize
12KB

Download
memory/1200-55-0x00000000716A1000-0x00000000716A3000-memory.dmp

Filesize
8KB

Download
memory/1200-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1200-57-0x000000007268D000-0x0000000072698000-memory.dmp

Filesize
44KB

Download
memory/1200-58-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

Download
memory/1200-59-0x000000007268D000-0x0000000072698000-memory.dmp

Filesize
44KB

Download
memory/1200-384-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1200-385-0x000000007268D000-0x0000000072698000-memory.dmp

Filesize
44KB

Download
memory/1556-221-0x0000000000000000-mapping.dmp

Download
memory/1580-222-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads