a75bf400fb111b8a3c20aa5d3344eabcc06832625402fd30cad90032545cfaf4

General

Target

a75bf400fb111b8a3c20aa5d3344eabcc06832625402fd30cad90032545cfaf4.xls
Size

95KB
MD5

456c5f82e23f3e6e17058f771b3e7c4f
SHA1

944efb6fd50d8765db7303c7d7f06021b84fb2c0
SHA256

a75bf400fb111b8a3c20aa5d3344eabcc06832625402fd30cad90032545cfaf4
SHA512

64f0cb9bdf1a5cbc21206ab411557a63c31150236f5cdc809bad854d3efb34f0019855f9a0efefdfe2019d489978ed62abb225f9dc25c34420a302fc2c2b507f

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	4076	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	696	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4392	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4812	2356	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

2356 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE
2356	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2356 wrote to memory of 4076	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4076	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 696	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 696	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4392	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4392	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4812	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4812	2356	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\a75bf400fb111b8a3c20aa5d3344eabcc06832625402fd30cad90032545cfaf4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2356

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4076

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:696

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:4392

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4812

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/696-264-0x0000000000000000-mapping.dmp

Download
memory/2356-117-0x00007FF7CABB0000-0x00007FF7CABC0000-memory.dmp

Filesize
64KB

Download
memory/2356-118-0x00007FF7CABB0000-0x00007FF7CABC0000-memory.dmp

Filesize
64KB

Download
memory/2356-119-0x00007FF7CABB0000-0x00007FF7CABC0000-memory.dmp

Filesize
64KB

Download
memory/2356-120-0x00007FF7CABB0000-0x00007FF7CABC0000-memory.dmp

Filesize
64KB

Download
memory/2356-129-0x00007FF7C7680000-0x00007FF7C7690000-memory.dmp

Filesize
64KB

Download
memory/2356-130-0x00007FF7C7680000-0x00007FF7C7690000-memory.dmp

Filesize
64KB

Download
memory/4076-263-0x0000000000000000-mapping.dmp

Download
memory/4392-265-0x0000000000000000-mapping.dmp

Download
memory/4812-268-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads