c21dd540d48ea87721ad2a55188d88f9dbbef1952d21666c01eee0ce81803ddb

General

Target

c21dd540d48ea87721ad2a55188d88f9dbbef1952d21666c01eee0ce81803ddb.xls
Size

95KB
MD5

02f151f8a81bdde2a79569a5465a68ca
SHA1

d3a55545eecb8a6c5c5c718206d4e82f63c8c235
SHA256

c21dd540d48ea87721ad2a55188d88f9dbbef1952d21666c01eee0ce81803ddb
SHA512

283a87af39296a80954a705805aafece0b6d647eb6752fe43f28456fad2fb0ed51fbd86489259cdb48b501bf675fc4c9d18270b78bcdb7ed97f738c55e3da632

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	4604	4456	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3312	4456	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3280	4456	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4084	4456	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4456 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4456 EXCEL.EXE
4456 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE
4456	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4456 wrote to memory of 4604	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 4604	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 3312	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 3312	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 3280	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 3280	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 4084	4456	EXCEL.EXE	regsvr32.exe
PID 4456 wrote to memory of 4084	4456	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\c21dd540d48ea87721ad2a55188d88f9dbbef1952d21666c01eee0ce81803ddb.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:4456

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4604

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3312

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3280

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4084

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/3280-268-0x0000000000000000-mapping.dmp

Download
memory/3312-267-0x0000000000000000-mapping.dmp

Download
memory/4084-269-0x0000000000000000-mapping.dmp

Download
memory/4456-114-0x00007FFB4B430000-0x00007FFB4B440000-memory.dmp

Filesize
64KB

Download
memory/4456-115-0x00007FFB4B430000-0x00007FFB4B440000-memory.dmp

Filesize
64KB

Download
memory/4456-116-0x00007FFB4B430000-0x00007FFB4B440000-memory.dmp

Filesize
64KB

Download
memory/4456-117-0x00007FFB4B430000-0x00007FFB4B440000-memory.dmp

Filesize
64KB

Download
memory/4456-126-0x00007FFB47930000-0x00007FFB47940000-memory.dmp

Filesize
64KB

Download
memory/4456-127-0x00007FFB47930000-0x00007FFB47940000-memory.dmp

Filesize
64KB

Download
memory/4604-266-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads