7243cdac9f116075a2b25d45c319825feecee1e851744811dcf6a6cd50acc262

General

Target

6cb9eff2c03a7064a655a6117cb62d4bf8694a6fab10588cac60b0781d60ca4d.xlsm
Size

85KB
MD5

e05574d2a2b00fc7b9862ad631ce3315
SHA1

b55f7933231453358bd4e0a033a8030595412b60
SHA256

6cb9eff2c03a7064a655a6117cb62d4bf8694a6fab10588cac60b0781d60ca4d
SHA512

065d815ac37c355098345392f4ffe1793317e6cd55640f05229c2f1211b9a0dd0941844e7234a27986f8b6a48cb8de1aa883440c23be91450f6b1da9cb9c1468

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://162.248.227.39/first.php

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

regsvr32.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	1832	1644	regsvr32.exe	EXCEL.EXE

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
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1644 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

EXCEL.EXE

description pid process

Token: SeShutdownPrivilege 1644 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1644 EXCEL.EXE
1644 EXCEL.EXE
1644 EXCEL.EXE

pid	process
1644	EXCEL.EXE

description	pid	process
Token: SeShutdownPrivilege	1644	EXCEL.EXE

pid	process
1644	EXCEL.EXE
1644	EXCEL.EXE
1644	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.exe
PID 1644 wrote to memory of 1832	1644	EXCEL.EXE	regsvr32.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\6cb9eff2c03a7064a655a6117cb62d4bf8694a6fab10588cac60b0781d60ca4d.xlsm
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1644

C:\Windows\SysWOW64\regsvr32.exe
regsvr32 -silent ..\yeieowur.dll
2⤵
- Process spawned unexpected child process
PID:1832

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1644-59-0x000000002F851000-0x000000002F854000-memory.dmp

Filesize
12KB

Download
memory/1644-60-0x0000000071361000-0x0000000071363000-memory.dmp

Filesize
8KB

Download
memory/1644-61-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1832-62-0x0000000000000000-mapping.dmp

Download
memory/1832-63-0x0000000075411000-0x0000000075413000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads