remcos | 4bcc9f3996381f8da70f1f1b03186ae93d894c42ac15e7afe7370f77a1f53cee

General

Target

Factura_Pagada.pdf.bat.exe
Size

1.0MB
MD5

7fe5f3f1d077626ddad8406b7975ed87
SHA1

23eba4f75b7960d9edd9679515771cc8ccfe0372
SHA256

4bcc9f3996381f8da70f1f1b03186ae93d894c42ac15e7afe7370f77a1f53cee
SHA512

70ff042c59b1fd4b0ffa18002d239e65ffdc32f7df2d079ba596551de2d23849d236eedcfb580d82e84cc68a2c911af295ef66458f56162bd89753484c9861d8
SSDEEP

24576:32CGzbZCkrpm1sHsqgQYKY4agvoR5ORGIemTzEp6VBw:32CGzbokNMqgQeOAKU1

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

41.216.183.218:56792

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-I5RS8V
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exe

pid	Process
1624	powershell.exe
2796	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Factura_Pagada.pdf.bat.exe

description	pid	Process	procid_target
PID 2420 set thread context of 2680	2420	Factura_Pagada.pdf.bat.exe	37

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exeschtasks.exeFactura_Pagada.pdf.bat.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Factura_Pagada.pdf.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Factura_Pagada.pdf.bat.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
2876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exe

pid	Process
2420	Factura_Pagada.pdf.bat.exe
2420	Factura_Pagada.pdf.bat.exe
2420	Factura_Pagada.pdf.bat.exe
2420	Factura_Pagada.pdf.bat.exe
1624	powershell.exe
2796	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Factura_Pagada.pdf.bat.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	2420	Factura_Pagada.pdf.bat.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeDebugPrivilege	2796	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

Factura_Pagada.pdf.bat.exe

description	pid	Process	procid_target
PID 2420 wrote to memory of 1624	2420	Factura_Pagada.pdf.bat.exe	31
PID 2420 wrote to memory of 1624	2420	Factura_Pagada.pdf.bat.exe	31
PID 2420 wrote to memory of 1624	2420	Factura_Pagada.pdf.bat.exe	31
PID 2420 wrote to memory of 1624	2420	Factura_Pagada.pdf.bat.exe	31
PID 2420 wrote to memory of 2796	2420	Factura_Pagada.pdf.bat.exe	33
PID 2420 wrote to memory of 2796	2420	Factura_Pagada.pdf.bat.exe	33
PID 2420 wrote to memory of 2796	2420	Factura_Pagada.pdf.bat.exe	33
PID 2420 wrote to memory of 2796	2420	Factura_Pagada.pdf.bat.exe	33
PID 2420 wrote to memory of 2876	2420	Factura_Pagada.pdf.bat.exe	35
PID 2420 wrote to memory of 2876	2420	Factura_Pagada.pdf.bat.exe	35
PID 2420 wrote to memory of 2876	2420	Factura_Pagada.pdf.bat.exe	35
PID 2420 wrote to memory of 2876	2420	Factura_Pagada.pdf.bat.exe	35
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37
PID 2420 wrote to memory of 2680	2420	Factura_Pagada.pdf.bat.exe	37

C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe
"C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1624
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fanBYIAxatVKe.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fanBYIAxatVKe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE5DC.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2876
- C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\Factura_Pagada.pdf.bat.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE5DC.tmp

Filesize
1KB

MD5
2bda9c5c835db22e6afe28212d5139a3

SHA1
e5e82361839676927c23a075f6b0abe99fc72cdf

SHA256
4182b48da3546bb369de93485d6af9136e43a4427345eea7d3feb35451dbb3ab

SHA512
f849e691ffb8cf875d69b16a43ec40c4fbf3abc60dd86537fba84ce3fe45deb70f0c806f7ef1703e901b3a0715a4e2695a645de4091f88c14ee25de2e35fe8a2

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
87c02162aa1bb1e9a9f8e8815414c53c

SHA1
8f45745e7133d5c74b6fb288aed622ea44625e2d

SHA256
e065c12b3efd58deedb96b9761a2e5bf070b706b7de858092f5cca0e2e86c3c2

SHA512
74238042da25340df82d04abe601f5e1606f0afbd79022ee70d5af64cd972d2e27b93b0034fa816540d4e25dbf4f381aef120bc11d3fad0d70d3c0a5ac0c97d3

Download Submit
memory/2420-0-0x0000000073DDE000-0x0000000073DDF000-memory.dmp

Filesize
4KB

Download
memory/2420-1-0x00000000009E0000-0x0000000000AE4000-memory.dmp

Filesize
1.0MB

Download
memory/2420-2-0x0000000073DD0000-0x00000000744BE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-3-0x00000000004A0000-0x00000000004BC000-memory.dmp

Filesize
112KB

Download
memory/2420-4-0x0000000073DDE000-0x0000000073DDF000-memory.dmp

Filesize
4KB

Download
memory/2420-5-0x0000000073DD0000-0x00000000744BE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-6-0x0000000005330000-0x00000000053F0000-memory.dmp

Filesize
768KB

Download
memory/2420-40-0x0000000073DD0000-0x00000000744BE000-memory.dmp

Filesize
6.9MB

Download
memory/2680-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2680-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads