1c03d79df7fe41a414fa36ede15c1a81fb08d70ea9d2f8e29649d26cbcbf59bd

General

Target

1c03d79df7fe41a414fa36ede15c1a81fb08d70ea9d2f8e29649d26cbcbf59bd.xls
Size

95KB
MD5

668487f04471b2455f8dcb15f5e5357f
SHA1

4ed6617b64c18b25ee857093758d568343c73a87
SHA256

1c03d79df7fe41a414fa36ede15c1a81fb08d70ea9d2f8e29649d26cbcbf59bd
SHA512

aaf7e69703198cf76466c6756e719865f531a5a7dcf45b0a831c2c69a8acae70bc4fcce97890001abfeec4185730330c0c529d37c6af2b15b7552f833fe53b1a

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/

xlm40.dropper

http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/

xlm40.dropper

http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/

xlm40.dropper

http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/

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	508	2600	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	488	2600	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	640	2600	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4604	2600	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

2600 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2600 EXCEL.EXE
2600 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2600 wrote to memory of 508	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 508	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 488	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 488	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 640	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 640	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 4604	2600	EXCEL.EXE	regsvr32.exe
PID 2600 wrote to memory of 4604	2600	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\1c03d79df7fe41a414fa36ede15c1a81fb08d70ea9d2f8e29649d26cbcbf59bd.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:2600

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:508

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:488

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:640

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4604

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/488-270-0x0000000000000000-mapping.dmp

Download
memory/508-269-0x0000000000000000-mapping.dmp

Download
memory/640-271-0x0000000000000000-mapping.dmp

Download
memory/2600-117-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmp

Filesize
64KB

Download
memory/2600-118-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmp

Filesize
64KB

Download
memory/2600-119-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmp

Filesize
64KB

Download
memory/2600-120-0x00007FF9532C0000-0x00007FF9532D0000-memory.dmp

Filesize
64KB

Download
memory/2600-129-0x00007FF94FA40000-0x00007FF94FA50000-memory.dmp

Filesize
64KB

Download
memory/2600-130-0x00007FF94FA40000-0x00007FF94FA50000-memory.dmp

Filesize
64KB

Download
memory/4604-272-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads