4cad8f1241bdb1ffe7da7dc10064761ac3100a24cc39b364eab7e63a98351521

General

Target

4cad8f1241bdb1ffe7da7dc10064761ac3100a24cc39b364eab7e63a98351521.xls
Size

95KB
MD5

8ad1776fdbd38610796164f1fb0af3d7
SHA1

b222e6657efcc7e016a7a986720b683faf04bab3
SHA256

4cad8f1241bdb1ffe7da7dc10064761ac3100a24cc39b364eab7e63a98351521
SHA512

18523c4892ca38b1d5cb4706270a529a1dceac82fd8e6848918f6025d3f5ff88f64dd41dfbd6bcc601618c479cafe5d954171456fd5433da3226f7306616a452

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.sunflowerlaboratory.in/fonts/79Tq62ly/

xlm40.dropper

http://dirigent.co.uk/vardagsekonomi/iC36jJ4J1cf/

xlm40.dropper

http://agtrade.hu/images/kiQYmOs2tSKq/

xlm40.dropper

https://www.zachboyle.com/wp-admin/EA470ZrTGNkuA/

Signatures

Process spawned unexpected child process 4 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2928	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3916	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3872	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3984	348	regsvr32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

348 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 348 wrote to memory of 2928	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 2928	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3916	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3916	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3872	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3872	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3984	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3984	348	EXCEL.EXE	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4cad8f1241bdb1ffe7da7dc10064761ac3100a24cc39b364eab7e63a98351521.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:2928

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3916

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3872

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:3984

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/348-117-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-118-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-119-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-120-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-129-0x00007FFF9E920000-0x00007FFF9E930000-memory.dmp

Filesize
64KB

Download
memory/348-130-0x00007FFF9E920000-0x00007FFF9E930000-memory.dmp

Filesize
64KB

Download
memory/2928-260-0x0000000000000000-mapping.dmp

Download
memory/3872-262-0x0000000000000000-mapping.dmp

Download
memory/3916-261-0x0000000000000000-mapping.dmp

Download
memory/3984-265-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads