6ae77e4d723bcb30896ee54441402e0ad6ac51a46f590bded930a632543e781c

General

Target

6ae77e4d723bcb30896ee54441402e0ad6ac51a46f590bded930a632543e781c.xlsb
Size

1.2MB
MD5

9fe555ef085da9a67ffa00e6110d02f6
SHA1

5f1530ef2891bfb9320dd3474b56e5971d4d2dc7
SHA256

6ae77e4d723bcb30896ee54441402e0ad6ac51a46f590bded930a632543e781c
SHA512

bd0acc99cf95d9ad928ae83ee045b721e8e8acba80bb9a4efd452cca2efa989778a272aaceaf5653f938930150bbebf8737aac11c62444752aa83228a9b5ab22
SSDEEP

24576:JiWxUUOy+cKPpxlDPTMFf9P0kmppxlDPTMFfypxlDPTMFf/:EEcy0jDLMd+bjDLMdEjDLMd/

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://162.19.135.167/856113025.dat

xlm40.dropper

http://138.124.184.233/856113025.dat

xlm40.dropper

http://188.165.62.1/856113025.dat

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	1436	4360	Regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3448	4360	Regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4504	4360	Regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4688	4360	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 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

pid	Process
4360	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4360	EXCEL.EXE
4360	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 1436	4360	EXCEL.EXE	90
PID 4360 wrote to memory of 1436	4360	EXCEL.EXE	90
PID 4360 wrote to memory of 3448	4360	EXCEL.EXE	91
PID 4360 wrote to memory of 3448	4360	EXCEL.EXE	91
PID 4360 wrote to memory of 4504	4360	EXCEL.EXE	92
PID 4360 wrote to memory of 4504	4360	EXCEL.EXE	92
PID 4360 wrote to memory of 4688	4360	EXCEL.EXE	93
PID 4360 wrote to memory of 4688	4360	EXCEL.EXE	93

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\6ae77e4d723bcb30896ee54441402e0ad6ac51a46f590bded930a632543e781c.xlsb"
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:4360
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 /s calc
  2⤵
  - Process spawned unexpected child process
  PID:1436
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\Testes\Fretdsf\Vertu.OCX
  2⤵
  - Process spawned unexpected child process
  PID:3448
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\Testes\Fretdsf\Vertua.OCX
  2⤵
  - Process spawned unexpected child process
  PID:4504
- C:\Windows\SYSTEM32\Regsvr32.exe
  Regsvr32 C:\Testes\Fretdsf\Vertub.OCX
  2⤵
  - Process spawned unexpected child process
  PID:4688

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

memory/4360-0-0x00007FFCAFCD0000-0x00007FFCAFCE0000-memory.dmp

Filesize
64KB

Download
memory/4360-2-0x00007FFCAFCD0000-0x00007FFCAFCE0000-memory.dmp

Filesize
64KB

Download
memory/4360-4-0x00007FFCAFCD0000-0x00007FFCAFCE0000-memory.dmp

Filesize
64KB

Download
memory/4360-3-0x00007FFCAFCD0000-0x00007FFCAFCE0000-memory.dmp

Filesize
64KB

Download
memory/4360-1-0x00007FFCAFCD0000-0x00007FFCAFCE0000-memory.dmp

Filesize
64KB

Download
memory/4360-5-0x00007FFCEFCED000-0x00007FFCEFCEE000-memory.dmp

Filesize
4KB

Download
memory/4360-6-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-8-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-7-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-9-0x00007FFCAD400000-0x00007FFCAD410000-memory.dmp

Filesize
64KB

Download
memory/4360-12-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-15-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-16-0x00007FFCAD400000-0x00007FFCAD410000-memory.dmp

Filesize
64KB

Download
memory/4360-14-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-13-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-17-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-19-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-18-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-11-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-10-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download
memory/4360-28-0x00007FFCEFC50000-0x00007FFCEFE45000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads