699b70644f54d0a8b1bd3127ef6770c6c19f0de82087ad76108a0d68055c2ba1

General

Target

699b70644f54d0a8b1bd3127ef6770c6c19f0de82087ad76108a0d68055c2ba1.xls
Size

91KB
MD5

d686700342ca2e512f2c0db4f2c091fe
SHA1

7311c4dda1d12ec68e491ab8b62b7500c78cb778
SHA256

699b70644f54d0a8b1bd3127ef6770c6c19f0de82087ad76108a0d68055c2ba1
SHA512

34b30785dc117b4a1b2230f2b5af1b745c0f5ce736fc31ca84e1bcc9b24191dbbe72662196d2b328cb533e161c9a435d42a3ff469b9a125c291a97eaf1c727ee
SSDEEP

1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZwEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgJ

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

xlm40.dropper

http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/kFB/

xlm40.dropper

http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

Signatures

Process spawned unexpected child process 4 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2000	400	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1296	400	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3200	400	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	664	400	regsvr32.exe	82

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

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

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

pid	Process
400	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
400	EXCEL.EXE
400	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 2000	400	EXCEL.EXE	87
PID 400 wrote to memory of 2000	400	EXCEL.EXE	87
PID 400 wrote to memory of 1296	400	EXCEL.EXE	88
PID 400 wrote to memory of 1296	400	EXCEL.EXE	88
PID 400 wrote to memory of 3200	400	EXCEL.EXE	91
PID 400 wrote to memory of 3200	400	EXCEL.EXE	91
PID 400 wrote to memory of 664	400	EXCEL.EXE	94
PID 400 wrote to memory of 664	400	EXCEL.EXE	94

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\699b70644f54d0a8b1bd3127ef6770c6c19f0de82087ad76108a0d68055c2ba1.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:400
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:2000
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:1296
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:3200
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
  2⤵
  - Process spawned unexpected child process
  PID:664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
1KB

MD5
88f54ab3f0a2211bbe451a91be517401

SHA1
65b82ef1fd194f33122b4a5bc3e388ff59305efd

SHA256
8fa195ec1566469d921df00e6f0a20d9200eda533f454eca603fbfcf6927255c

SHA512
a2844436b40d2df268232817ef3bb7d369680619269543c861f63eef2636450cc9e5b026e8a6b682fc6a32f722c9b2aecc90ef28521e7cb4e377a391b3886165

Download Submit
memory/400-13-0x00007FFD9B0E0000-0x00007FFD9B0F0000-memory.dmp

Filesize
64KB

Download
memory/400-9-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-4-0x00007FFD9D3B0000-0x00007FFD9D3C0000-memory.dmp

Filesize
64KB

Download
memory/400-1-0x00007FFD9D3B0000-0x00007FFD9D3C0000-memory.dmp

Filesize
64KB

Download
memory/400-5-0x00007FFD9D3B0000-0x00007FFD9D3C0000-memory.dmp

Filesize
64KB

Download
memory/400-8-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-7-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-14-0x00007FFD9B0E0000-0x00007FFD9B0F0000-memory.dmp

Filesize
64KB

Download
memory/400-0-0x00007FFD9D3B0000-0x00007FFD9D3C0000-memory.dmp

Filesize
64KB

Download
memory/400-11-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-2-0x00007FFD9D3B0000-0x00007FFD9D3C0000-memory.dmp

Filesize
64KB

Download
memory/400-12-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-6-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-10-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-15-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-17-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-16-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-21-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-20-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-19-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-18-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-37-0x00007FFDDD330000-0x00007FFDDD525000-memory.dmp

Filesize
2.0MB

Download
memory/400-3-0x00007FFDDD3CD000-0x00007FFDDD3CE000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads