41b752063d953025fc871db6f9ab07f789eeaaa15b2d898083830eaf3fb4c0ce

General

Target

41b752063d953025fc871db6f9ab07f789eeaaa15b2d898083830eaf3fb4c0ce.xls
Size

95KB
MD5

ce88cd9b81985c73c67ae94ca83b34be
SHA1

87d5b98daeabcfa8f97d06b95f42ae48a052e907
SHA256

41b752063d953025fc871db6f9ab07f789eeaaa15b2d898083830eaf3fb4c0ce
SHA512

24d029ac47cb342cc9b89fbbc3de5b5386d1399071d4bf32805a4cd5f796922ae38dd6d939c2e0fc0374ec70af71b41f0e8d27ffd4791ff865d34e6368cb7cae

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	4084	3840	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4808	3840	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4300	3840	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4496	3840	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

3840 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3840 EXCEL.EXE
3840 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE
3840	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3840 wrote to memory of 4084	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4084	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4808	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4808	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4300	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4300	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4496	3840	EXCEL.EXE	regsvr32.exe
PID 3840 wrote to memory of 4496	3840	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\41b752063d953025fc871db6f9ab07f789eeaaa15b2d898083830eaf3fb4c0ce.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:3840

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4084

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4808

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:4300

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4496

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/3840-114-0x00007FFC17FD0000-0x00007FFC17FE0000-memory.dmp

Filesize
64KB

Download
memory/3840-115-0x00007FFC17FD0000-0x00007FFC17FE0000-memory.dmp

Filesize
64KB

Download
memory/3840-116-0x00007FFC17FD0000-0x00007FFC17FE0000-memory.dmp

Filesize
64KB

Download
memory/3840-117-0x00007FFC17FD0000-0x00007FFC17FE0000-memory.dmp

Filesize
64KB

Download
memory/3840-126-0x00007FFC14460000-0x00007FFC14470000-memory.dmp

Filesize
64KB

Download
memory/3840-127-0x00007FFC14460000-0x00007FFC14470000-memory.dmp

Filesize
64KB

Download
memory/4084-248-0x0000000000000000-mapping.dmp

Download
memory/4300-250-0x0000000000000000-mapping.dmp

Download
memory/4496-253-0x0000000000000000-mapping.dmp

Download
memory/4808-249-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads