bf33ba2a0d3a1728efd44f88e6c6c5d76c4674e512446069210c4607d99753d1

General

Target

bf33ba2a0d3a1728efd44f88e6c6c5d76c4674e512446069210c4607d99753d1.xls
Size

95KB
MD5

233428c707d8df9f9b1a371ea0968a63
SHA1

a40675a06cf9f88a59408622f8e4bce3d5c41757
SHA256

bf33ba2a0d3a1728efd44f88e6c6c5d76c4674e512446069210c4607d99753d1
SHA512

710dfe0ba763cc9fd0ffa95f33c3f0cb0b62b97392bd5fa30c8446ce0ab5147814ea62b8a9ca52a1e3ae458b91761af6885e326ae809f19c9c5c275cdd6eb37a

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	4400	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4396	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5084	2356	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4800	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 4400	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4400	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4396	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4396	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 5084	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 5084	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4800	2356	EXCEL.EXE	regsvr32.exe
PID 2356 wrote to memory of 4800	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\bf33ba2a0d3a1728efd44f88e6c6c5d76c4674e512446069210c4607d99753d1.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:4400

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4396

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:5084

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4800

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/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/2356-121-0x00007FF7CABB0000-0x00007FF7CABC0000-memory.dmp

Filesize
64KB

Download
memory/2356-130-0x00007FF7C7040000-0x00007FF7C7050000-memory.dmp

Filesize
64KB

Download
memory/2356-131-0x00007FF7C7040000-0x00007FF7C7050000-memory.dmp

Filesize
64KB

Download
memory/4396-267-0x0000000000000000-mapping.dmp

Download
memory/4400-266-0x0000000000000000-mapping.dmp

Download
memory/4800-269-0x0000000000000000-mapping.dmp

Download
memory/5084-268-0x0000000000000000-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