a36a189ee6c1ae3518a71f7560b3046facc30942f907f9244cf1b18573bbe862

General

Target

维修一三组10月月报.xls
Size

110KB
MD5

21c6b1559df852e77e8d201c0a9130e8
SHA1

bfbaa28263b6029b3964e34c8e7544de346a9981
SHA256

297f3ee2b8bc14163e5d7971350adb587a847610acc38cc88160d3679181a5a0
SHA512

42db083f1d52bbdb44fcc1cbb84b0a3d6cc4a95b88d2c6f2a289b07a5f4f9a1586d16c7b3ce01fe9aa205435fe962770c159eed2074e8eac517b460ea6bd5098
SSDEEP

1536:lOOOzcQvs1J8e8tSPQbkVpHj/0+Z95Qpy2eLTx81v6WVbrzQgiUCnyITkR62lLQ5:69y2UWVbrzQgDITk9qjhJtXwL5kbg4T

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	1080	972	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1776	972	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1924	972	cmd.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

972 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
972	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-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\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-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\3B9D6000\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

972 EXCEL.EXE
Suspicious behavior: RenamesItself 1 IoCs

Processes:

EXCEL.EXE

pid process

972 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

972 EXCEL.EXE
972 EXCEL.EXE
972 EXCEL.EXE
972 EXCEL.EXE
972 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\3B9D6000\:Zone.Identifier:$DATA	EXCEL.EXE

pid	process
972	EXCEL.EXE

pid	process
972	EXCEL.EXE

pid	process
972	EXCEL.EXE
972	EXCEL.EXE
972	EXCEL.EXE
972	EXCEL.EXE
972	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 972 wrote to memory of 1080	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1080	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1080	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1080	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1776	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1776	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1776	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1776	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1924	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1924	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1924	972	EXCEL.EXE	cmd.exe
PID 972 wrote to memory of 1924	972	EXCEL.EXE	cmd.exe
PID 1080 wrote to memory of 108	1080	cmd.exe	attrib.exe
PID 1080 wrote to memory of 108	1080	cmd.exe	attrib.exe
PID 1080 wrote to memory of 108	1080	cmd.exe	attrib.exe
PID 1080 wrote to memory of 108	1080	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

108 attrib.exe

pid	process
108	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\维修一三组10月月报.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:972

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:1080

C:\Windows\SysWOW64\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:108

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:1776

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:1924

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/108-69-0x0000000000000000-mapping.dmp

Download
memory/972-72-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-77-0x000000007205D000-0x0000000072068000-memory.dmp

Filesize
44KB

Download
memory/972-63-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-58-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/972-59-0x000000007205D000-0x0000000072068000-memory.dmp

Filesize
44KB

Download
memory/972-60-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-61-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-62-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-65-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-76-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/972-57-0x000000007205D000-0x0000000072068000-memory.dmp

Filesize
44KB

Download
memory/972-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/972-64-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-75-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-55-0x0000000071071000-0x0000000071073000-memory.dmp

Filesize
8KB

Download
memory/972-70-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-71-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-54-0x000000002FBA1000-0x000000002FBA4000-memory.dmp

Filesize
12KB

Download
memory/972-73-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/972-74-0x000000000052B000-0x0000000000534000-memory.dmp

Filesize
36KB

Download
memory/1080-66-0x0000000000000000-mapping.dmp

Download
memory/1776-67-0x0000000000000000-mapping.dmp

Download
memory/1924-68-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads