def2188d075bfec41668ea744960575ba6d9f0f1bc8ce769080e03b4fa9443a5

General

Target

def2188d075bfec41668ea744960575ba6d9f0f1bc8ce769080e03b4fa9443a5.xls
Size

95KB
MD5

7c1a5668cc82c7b864970cc4b19ce254
SHA1

1a4192a415beeadf240174ce504adda9fac15f28
SHA256

def2188d075bfec41668ea744960575ba6d9f0f1bc8ce769080e03b4fa9443a5
SHA512

a0ae4f6db2590be936a403197fd1ca69447c2bacc3d19600fe4df08aa4469a6a62efe501cc658b1f481b37e72cf9db5dc10917e6e9a33b920384aafc0e759494

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	3716	4716	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3132	4716	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5036	4716	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4188	4716	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

4716 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4716 EXCEL.EXE
4716 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4716 wrote to memory of 3716	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 3716	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 3132	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 3132	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 5036	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 5036	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 4188	4716	EXCEL.EXE	regsvr32.exe
PID 4716 wrote to memory of 4188	4716	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\def2188d075bfec41668ea744960575ba6d9f0f1bc8ce769080e03b4fa9443a5.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:4716

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:3716

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3132

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:5036

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4188

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/3132-252-0x0000000000000000-mapping.dmp

Download
memory/3716-251-0x0000000000000000-mapping.dmp

Download
memory/4188-256-0x0000000000000000-mapping.dmp

Download
memory/4716-117-0x00007FFCF6A10000-0x00007FFCF6A20000-memory.dmp

Filesize
64KB

Download
memory/4716-118-0x00007FFCF6A10000-0x00007FFCF6A20000-memory.dmp

Filesize
64KB

Download
memory/4716-119-0x00007FFCF6A10000-0x00007FFCF6A20000-memory.dmp

Filesize
64KB

Download
memory/4716-120-0x00007FFCF6A10000-0x00007FFCF6A20000-memory.dmp

Filesize
64KB

Download
memory/4716-129-0x00007FFCF3EC0000-0x00007FFCF3ED0000-memory.dmp

Filesize
64KB

Download
memory/4716-130-0x00007FFCF3EC0000-0x00007FFCF3ED0000-memory.dmp

Filesize
64KB

Download
memory/5036-253-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads