f73fccc50cda7bc1f80239ec7c5bfaffdca7b62db4623c65944db32c938eefa9

Analysis

max time kernel
107s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27-11-2022 02:55

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General

Target

ͬļ--豸/1.¼3 ŵ飨3_ر.xls
Size

96KB
MD5

73d92c3deade678d26fe9945f46ab864
SHA1

302d28a84dfcfb4a083d0cf5af916d514fbdb58f
SHA256

c78a75a2c2909fb4fe63767308fff176d80af3ae3037677271a36aea382a85c5
SHA512

8d926a517c6395b03bfee51a7fdda9b25c7be497b2cb99a77752bd56735e93fde3a4eed2d727c2f7e68e047d9c001f6a499a8067aa9d6e53ef316c99c9f47951
SSDEEP

3072:Wd1gxv7yZmspH7+cclKisPI4ukoRWGN6WVbrzQ7ITkFIBAww33XjUJtXwm:S1gxv7yZmspH7+cclKisPI4ukoRWGNc+

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	1296	1736	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1056	1736	cmd.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1628	1736	cmd.exe	EXCEL.EXE

Deletes itself 1 IoCs

Processes:

EXCEL.EXE

pid process

1736 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
1736	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-1-5-21-3406023954-474543476-3319432036-1000\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
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Toolbar	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
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 (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
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
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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\ͬļ--豸\489D6000\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1736 EXCEL.EXE
Suspicious behavior: RenamesItself 1 IoCs

Processes:

EXCEL.EXE

pid process

1736 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1736 EXCEL.EXE
1736 EXCEL.EXE
1736 EXCEL.EXE
1736 EXCEL.EXE
1736 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\ͬļ--豸\489D6000\:Zone.Identifier:$DATA	EXCEL.EXE

pid	process
1736	EXCEL.EXE

pid	process
1736	EXCEL.EXE

pid	process
1736	EXCEL.EXE
1736	EXCEL.EXE
1736	EXCEL.EXE
1736	EXCEL.EXE
1736	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1736 wrote to memory of 572	1736	EXCEL.EXE	splwow64.exe
PID 1736 wrote to memory of 572	1736	EXCEL.EXE	splwow64.exe
PID 1736 wrote to memory of 572	1736	EXCEL.EXE	splwow64.exe
PID 1736 wrote to memory of 572	1736	EXCEL.EXE	splwow64.exe
PID 1736 wrote to memory of 1296	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1296	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1296	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1296	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1056	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1056	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1056	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1056	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1628	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1628	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1628	1736	EXCEL.EXE	cmd.exe
PID 1736 wrote to memory of 1628	1736	EXCEL.EXE	cmd.exe
PID 1296 wrote to memory of 1232	1296	cmd.exe	attrib.exe
PID 1296 wrote to memory of 1232	1296	cmd.exe	attrib.exe
PID 1296 wrote to memory of 1232	1296	cmd.exe	attrib.exe
PID 1296 wrote to memory of 1232	1296	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1232 attrib.exe

pid	process
1232	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\ͬļ--豸\1.¼3 ŵ飨3_ر.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:1736

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:572

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:1296

C:\Windows\SysWOW64\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1232

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:1056

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:1628

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

Replay Monitor

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Downloads

memory/572-59-0x0000000000000000-mapping.dmp

Download
memory/572-60-0x000007FEFBAF1000-0x000007FEFBAF3000-memory.dmp

Filesize
8KB

Download
memory/1056-178-0x0000000000000000-mapping.dmp

Download
memory/1232-180-0x0000000000000000-mapping.dmp

Download
memory/1296-177-0x0000000000000000-mapping.dmp

Download
memory/1628-179-0x0000000000000000-mapping.dmp

Download
memory/1736-58-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download
memory/1736-57-0x00000000722CD000-0x00000000722D8000-memory.dmp

Filesize
44KB

Download
memory/1736-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1736-54-0x000000002FD91000-0x000000002FD94000-memory.dmp

Filesize
12KB

Download
memory/1736-55-0x00000000712E1000-0x00000000712E3000-memory.dmp

Filesize
8KB

Download
memory/1736-181-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1736-182-0x00000000722CD000-0x00000000722D8000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads