5681da71308c609db5621eccd805875c40a3e10b33816c677e54e89c9b41fd6c

General

Target

5681da71308c609db5621eccd805875c40a3e10b33816c677e54e89c9b41fd6c.xls
Size

95KB
MD5

753a0712e2b7d22f3339ffb0728f03fb
SHA1

2f63fa52dc6582abf02d279c961effca416df8d6
SHA256

5681da71308c609db5621eccd805875c40a3e10b33816c677e54e89c9b41fd6c
SHA512

40015d39252905d209eda5a780b5acdc9af1d0c93eb4057644f8964b70d2c9814d3300f6e66a042f3022b79c8458f31b305ee0de7559d3097765cbe411cdc07b

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	4364	1640	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4300	1640	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4312	1640	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4636	1640	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1640 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1640 EXCEL.EXE
1640 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE
1640	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1640 wrote to memory of 4364	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4364	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4300	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4300	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4312	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4312	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4636	1640	EXCEL.EXE	regsvr32.exe
PID 1640 wrote to memory of 4636	1640	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\5681da71308c609db5621eccd805875c40a3e10b33816c677e54e89c9b41fd6c.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:1640

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4364

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4300

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:4312

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4636

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/1640-117-0x00007FFA55030000-0x00007FFA55040000-memory.dmp

Filesize
64KB

Download
memory/1640-118-0x00007FFA55030000-0x00007FFA55040000-memory.dmp

Filesize
64KB

Download
memory/1640-119-0x00007FFA55030000-0x00007FFA55040000-memory.dmp

Filesize
64KB

Download
memory/1640-120-0x00007FFA55030000-0x00007FFA55040000-memory.dmp

Filesize
64KB

Download
memory/1640-129-0x00007FFA52440000-0x00007FFA52450000-memory.dmp

Filesize
64KB

Download
memory/1640-130-0x00007FFA52440000-0x00007FFA52450000-memory.dmp

Filesize
64KB

Download
memory/4300-268-0x0000000000000000-mapping.dmp

Download
memory/4312-269-0x0000000000000000-mapping.dmp

Download
memory/4364-267-0x0000000000000000-mapping.dmp

Download
memory/4636-272-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads