4dfc81b50ba77d7a47f34283f1d8f1abf38b84ee67c77616b507f9177a52924d

General

Target

4dfc81b50ba77d7a47f34283f1d8f1abf38b84ee67c77616b507f9177a52924d.xls
Size

95KB
MD5

cc01a576bc37aa5b0731cc23bda5826c
SHA1

47d1f09dfd473a6c921d2d749cbf61b9190f9f83
SHA256

4dfc81b50ba77d7a47f34283f1d8f1abf38b84ee67c77616b507f9177a52924d
SHA512

56cc92199db33451d0162f8ba8ed7b30812c7c16311f3769e0e097e9f076bbf588c49291b77935c6305e53b8ac7ab108a5a233eb69b27c676ea38e5641dce79e

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	3568	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3912	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2856	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	924	3916	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3916 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3916 EXCEL.EXE
3916 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3916 wrote to memory of 3568	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 3568	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 3912	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 3912	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 2856	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 2856	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 924	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 924	3916	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\4dfc81b50ba77d7a47f34283f1d8f1abf38b84ee67c77616b507f9177a52924d.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3916

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:3568

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3912

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:2856

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:924

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/924-258-0x0000000000000000-mapping.dmp

Download
memory/2856-255-0x0000000000000000-mapping.dmp

Download
memory/3568-253-0x0000000000000000-mapping.dmp

Download
memory/3912-254-0x0000000000000000-mapping.dmp

Download
memory/3916-122-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-131-0x00007FFEBD4C0000-0x00007FFEBD4D0000-memory.dmp

Filesize
64KB

Download
memory/3916-132-0x00007FFEBD4C0000-0x00007FFEBD4D0000-memory.dmp

Filesize
64KB

Download
memory/3916-119-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-121-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-120-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-295-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-296-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-297-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download
memory/3916-298-0x00007FFEC05E0000-0x00007FFEC05F0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads