remcos | 33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8

Analysis

max time kernel
135s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-12-2024 02:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
Size

1.1MB
MD5

c6556cae0fd8c8c81a57c47f79573a9a
SHA1

df15f052ade6d9a85d1a824c82a7235902f057e2
SHA256

33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8
SHA512

2045a0e0eec4345177b65b348db99b97764599e49036212be0ac481dcc289ee9056cd06bd373285dea592743d9399ebc60a691909eea18cbb9a70ca7c3b3a248
SSDEEP

24576:9R36hdkwBjSEyfE75BP/+mgWdm/bTmmLKST:HAzFSOr2mgxvm

Score

10^/10

remcos fulano discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

fulano

probandonuevodomicolombia.cfd:3020

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
registros.dat
keylog_flag
false
keylog_folder
registros
mouse_option
false
mutex
lkjbdfjkbkjmbnnvnmcnm-MJPIRV
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de pantalla
screenshot_path
%AppData%
screenshot_time
10
startup_value
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

Executes dropped EXE 1 IoCs

pid	Process
1304	programs.exe

Loads dropped DLL 2 IoCs

pid	Process
2760	cmd.exe
2760	cmd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\programs = "C:\\Users\\Admin\\Music\\programs.exe"	reg.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	programs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2384	cmd.exe
1728	PING.EXE
2760	cmd.exe
2992	PING.EXE
1896	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
1728	PING.EXE
2992	PING.EXE
1896	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
1304	programs.exe
1304	programs.exe
1304	programs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
Token: SeDebugPrivilege	1304	programs.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2508 wrote to memory of 2384	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	30
PID 2508 wrote to memory of 2384	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	30
PID 2508 wrote to memory of 2384	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	30
PID 2508 wrote to memory of 2384	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	30
PID 2384 wrote to memory of 1728	2384	cmd.exe	32
PID 2384 wrote to memory of 1728	2384	cmd.exe	32
PID 2384 wrote to memory of 1728	2384	cmd.exe	32
PID 2384 wrote to memory of 1728	2384	cmd.exe	32
PID 2508 wrote to memory of 2760	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	34
PID 2508 wrote to memory of 2760	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	34
PID 2508 wrote to memory of 2760	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	34
PID 2508 wrote to memory of 2760	2508	33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe	34
PID 2760 wrote to memory of 2992	2760	cmd.exe	36
PID 2760 wrote to memory of 2992	2760	cmd.exe	36
PID 2760 wrote to memory of 2992	2760	cmd.exe	36
PID 2760 wrote to memory of 2992	2760	cmd.exe	36
PID 2384 wrote to memory of 2496	2384	cmd.exe	37
PID 2384 wrote to memory of 2496	2384	cmd.exe	37
PID 2384 wrote to memory of 2496	2384	cmd.exe	37
PID 2384 wrote to memory of 2496	2384	cmd.exe	37
PID 2760 wrote to memory of 1896	2760	cmd.exe	38
PID 2760 wrote to memory of 1896	2760	cmd.exe	38
PID 2760 wrote to memory of 1896	2760	cmd.exe	38
PID 2760 wrote to memory of 1896	2760	cmd.exe	38
PID 2760 wrote to memory of 1304	2760	cmd.exe	39
PID 2760 wrote to memory of 1304	2760	cmd.exe	39
PID 2760 wrote to memory of 1304	2760	cmd.exe	39
PID 2760 wrote to memory of 1304	2760	cmd.exe	39
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40
PID 1304 wrote to memory of 1076	1304	programs.exe	40

C:\Users\Admin\AppData\Local\Temp\33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe
"C:\Users\Admin\AppData\Local\Temp\33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 37 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "programs" /t REG_SZ /d "C:\Users\Admin\Music\programs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 37
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1728
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "programs" /t REG_SZ /d "C:\Users\Admin\Music\programs.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 37 > nul && copy "C:\Users\Admin\AppData\Local\Temp\33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8.exe" "C:\Users\Admin\Music\programs.exe" && ping 127.0.0.1 -n 37 > nul && "C:\Users\Admin\Music\programs.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2760
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 37
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2992
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 37
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1896
- - C:\Users\Admin\Music\programs.exe
    "C:\Users\Admin\Music\programs.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1304
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      4⤵
      PID:1076

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\Music\programs.exe

Filesize
1.1MB

MD5
c6556cae0fd8c8c81a57c47f79573a9a

SHA1
df15f052ade6d9a85d1a824c82a7235902f057e2

SHA256
33b8680de84d8f21e81ca596cd8cefc5b019b9060e2c9e1f3d92e296cb40e9e8

SHA512
2045a0e0eec4345177b65b348db99b97764599e49036212be0ac481dcc289ee9056cd06bd373285dea592743d9399ebc60a691909eea18cbb9a70ca7c3b3a248

Download Submit
memory/1076-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1076-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1304-17-0x0000000000C10000-0x0000000000D3A000-memory.dmp

Filesize
1.2MB

Download
memory/1304-18-0x0000000004350000-0x000000000436A000-memory.dmp

Filesize
104KB

Download
memory/1304-19-0x0000000000A70000-0x0000000000A76000-memory.dmp

Filesize
24KB

Download
memory/2508-0-0x0000000073D0E000-0x0000000073D0F000-memory.dmp

Filesize
4KB

Download
memory/2508-6-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/2508-5-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/2508-4-0x0000000073D0E000-0x0000000073D0F000-memory.dmp

Filesize
4KB

Download
memory/2508-3-0x0000000000790000-0x00000000007B6000-memory.dmp

Filesize
152KB

Download
memory/2508-2-0x0000000073D00000-0x00000000743EE000-memory.dmp

Filesize
6.9MB

Download
memory/2508-1-0x0000000000830000-0x000000000095A000-memory.dmp

Filesize
1.2MB

Download