remcos | ca76896fb473edcfdce44fa41ab776da23aedd3ecec1589f4b4aa184057166d3

Analysis

max time kernel
298s
max time network
284s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-01-2025 00:57

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General

Target

Pagamento.Fatura.CDG.pdf.exe
Size

208KB
MD5

65295769536ed116328b24b1e0d903eb
SHA1

1b6820e5bcb014cb499d1dbdabcc5840cbde9e6e
SHA256

841a313baacae6d514f0f9e3a27943723034d5282378106cfa674fc33cc2c574
SHA512

7f8d76ad6586d28fcf90f766cdbf0b1945cd1627aba79dcca5c3dcb683f3f1f02475207e4626b1652c92907e3e51240a9df0ea4ba09bbe0bac75875b6c6edd80
SSDEEP

3072:d/kQ+3Wsg9t3BdPKN5xezNQNuqscX7wmdTxIwbj7JlxihOKbTvKRAv9/:mQ7HdPKN5xB391VxIoigKbTCO

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

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-PE85MB
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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4216 created 3424	4216	Pagamento.Fatura.CDG.pdf.exe	56

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TypeId.vbs	Pagamento.Fatura.CDG.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4216 set thread context of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87

System Location Discovery: System Language Discovery 1 TTPs 2 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Pagamento.Fatura.CDG.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Pagamento.Fatura.CDG.pdf.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4216	Pagamento.Fatura.CDG.pdf.exe
4216	Pagamento.Fatura.CDG.pdf.exe
4216	Pagamento.Fatura.CDG.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4216	Pagamento.Fatura.CDG.pdf.exe
Token: SeDebugPrivilege	4216	Pagamento.Fatura.CDG.pdf.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87
PID 4216 wrote to memory of 4292	4216	Pagamento.Fatura.CDG.pdf.exe	87

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\Pagamento.Fatura.CDG.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Pagamento.Fatura.CDG.pdf.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4216
- C:\Users\Admin\AppData\Local\Temp\Pagamento.Fatura.CDG.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Pagamento.Fatura.CDG.pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4216-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/4216-1-0x0000000000EE0000-0x0000000000F1A000-memory.dmp

Filesize
232KB

Download
memory/4216-2-0x0000000003310000-0x0000000003316000-memory.dmp

Filesize
24KB

Download
memory/4216-3-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-4-0x0000000006BA0000-0x0000000006CDE000-memory.dmp

Filesize
1.2MB

Download
memory/4216-5-0x0000000007290000-0x0000000007834000-memory.dmp

Filesize
5.6MB

Download
memory/4216-6-0x0000000006DA0000-0x0000000006E32000-memory.dmp

Filesize
584KB

Download
memory/4216-10-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-20-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-32-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-36-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-52-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-50-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-48-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-46-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-44-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-42-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-40-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-38-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-34-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-30-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-28-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-26-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-24-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-22-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-18-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-16-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-14-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-12-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-8-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-7-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-68-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-70-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-66-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-64-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-62-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-60-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-58-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-56-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-54-0x0000000006BA0000-0x0000000006CD8000-memory.dmp

Filesize
1.2MB

Download
memory/4216-1329-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1330-0x0000000006FA0000-0x0000000007038000-memory.dmp

Filesize
608KB

Download
memory/4216-1331-0x00000000071B0000-0x0000000007244000-memory.dmp

Filesize
592KB

Download
memory/4216-1332-0x00000000078B0000-0x00000000078FC000-memory.dmp

Filesize
304KB

Download
memory/4216-1333-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/4216-1334-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1335-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1336-0x00000000067D0000-0x0000000006824000-memory.dmp

Filesize
336KB

Download
memory/4216-1341-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1344-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1346-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1345-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4216-1353-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4292-1352-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4292-1359-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download