171163b6b300cf88071bf90020002708e99523c844ff57daf8cecfc5f5da7257

General

Target

171163b6b300cf88071bf90020002708e99523c844ff57daf8cecfc5f5da7257.xls
Size

95KB
MD5

638003b75203ef5da4f23761b1a4d6f9
SHA1

3ecac1625757033d005fbf1824abe7a7f8d46965
SHA256

171163b6b300cf88071bf90020002708e99523c844ff57daf8cecfc5f5da7257
SHA512

ded88a737ee9ded52a1aa6c43a7c1e17de99b0cecc446fb5d076369941fce1e7a4316bcd59f3588dccae9230ab8fc964decbaf0770e5e7c60f895f466f646bfe

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	3808	3172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	396	3172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	720	3172	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4064	3172	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

3172 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3172 wrote to memory of 3808	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 3808	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 396	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 396	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 720	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 720	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 4064	3172	EXCEL.EXE	regsvr32.exe
PID 3172 wrote to memory of 4064	3172	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\171163b6b300cf88071bf90020002708e99523c844ff57daf8cecfc5f5da7257.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:3808

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:396

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:720

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4064

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/396-276-0x0000000000000000-mapping.dmp

Download
memory/720-278-0x0000000000000000-mapping.dmp

Download
memory/3172-118-0x00007FFCD3CE0000-0x00007FFCD3CF0000-memory.dmp

Filesize
64KB

Download
memory/3172-119-0x00007FFCD3CE0000-0x00007FFCD3CF0000-memory.dmp

Filesize
64KB

Download
memory/3172-120-0x00007FFCD3CE0000-0x00007FFCD3CF0000-memory.dmp

Filesize
64KB

Download
memory/3172-121-0x00007FFCD3CE0000-0x00007FFCD3CF0000-memory.dmp

Filesize
64KB

Download
memory/3172-130-0x00007FFCD0170000-0x00007FFCD0180000-memory.dmp

Filesize
64KB

Download
memory/3172-131-0x00007FFCD0170000-0x00007FFCD0180000-memory.dmp

Filesize
64KB

Download
memory/3808-274-0x0000000000000000-mapping.dmp

Download
memory/4064-281-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads