80afad8cad6c0a84c232d5d17354b11ff9e5920d65c2552047801bc73a8bec82

General

Target

a.xlsb
Size

155KB
MD5

79d94d53703ee58ab2aac1782cbd6939
SHA1

16a918e278d56ed854a3314d2a4ea907001195fc
SHA256

80afad8cad6c0a84c232d5d17354b11ff9e5920d65c2552047801bc73a8bec82
SHA512

912a3ea6a5f75b35376ac34b03605ffd660376ad2f201648a0b73b79159c35f051842ba0585ad075bdd2424940dc671082f2cdf178e53c4c6cfdd072c3a7dcd9

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://shadiinfo.com/2DP6mQeg/pt.html

xlm40.dropper

https://treasurechestcaribbean.com/pZ2Z61bqa/pt.html

Signatures

Process spawned unexpected child process 2 IoCs

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

Processes:

regsvr32.exeregsvr32.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	1684	2004	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	548	2004	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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar	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 (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\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 (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
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	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2004 EXCEL.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

EXCEL.EXE

pid process

2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE

pid	process
2004	EXCEL.EXE

pid	process
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2004 wrote to memory of 1740	2004	EXCEL.EXE	splwow64.exe
PID 2004 wrote to memory of 1740	2004	EXCEL.EXE	splwow64.exe
PID 2004 wrote to memory of 1740	2004	EXCEL.EXE	splwow64.exe
PID 2004 wrote to memory of 1740	2004	EXCEL.EXE	splwow64.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 1684	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	EXCEL.EXE	regsvr32.exe
PID 2004 wrote to memory of 548	2004	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\a.xlsb
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1740

C:\Windows\SysWOW64\regsvr32.exe
regsvr32 -s ..\covi1.dll
2⤵
- Process spawned unexpected child process
PID:1684

C:\Windows\SysWOW64\regsvr32.exe
regsvr32 -s ..\covi2.dll
2⤵
- Process spawned unexpected child process
PID:548

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

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Downloads

memory/548-67-0x0000000000000000-mapping.dmp

Download
memory/1684-65-0x0000000000000000-mapping.dmp

Download
memory/1684-66-0x00000000765F1000-0x00000000765F3000-memory.dmp

Filesize
8KB

Download
memory/1740-63-0x0000000000000000-mapping.dmp

Download
memory/1740-64-0x000007FEFC411000-0x000007FEFC413000-memory.dmp

Filesize
8KB

Download
memory/2004-60-0x000000002FF01000-0x000000002FF04000-memory.dmp

Filesize
12KB

Download
memory/2004-61-0x0000000071CC1000-0x0000000071CC3000-memory.dmp

Filesize
8KB

Download
memory/2004-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads