remcos | df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a

General

Target

df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe
Size

8.8MB
MD5

2451d523a7045d8b626879f156950ddb
SHA1

f57843eefdc046cd6ae291ae303ecd60b27e8a28
SHA256

df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a
SHA512

427667d0df7f32dc62f1f7668bbcd05335c8966ba2db0033551c42c24bfd90c5e0c1fe6383449fb2f26c4cd1a042ad47f2fb38573481f705ba63d917883542c2
SSDEEP

98304:UPwv0GCAR4IQrKgz3rNK9BLqzMIfEmUdWVupjJJWhWcV:UPwHCAcKgz3rNKzqzMcvUdWVuxbWhWcV

Score

10^/10

remcos rosas discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ROSAS

C2

newstaticfreepoint24.ddns-ip.net: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
data
mouse_option
false
mutex
kljjbdlcjbavhbiluiewliuwqerlib-DDZVN3
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

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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Chrominum_A = "C:\\Users\\Admin\\Favorites\\components\\assets\\Chrominum_A.exe"	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe

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	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4968	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 4968	2256	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe	87
PID 2256 wrote to memory of 4968	2256	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe	87
PID 2256 wrote to memory of 4968	2256	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe	87
PID 2256 wrote to memory of 4968	2256	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe	87
PID 2256 wrote to memory of 4968	2256	df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe	87

C:\Users\Admin\AppData\Local\Temp\df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe
"C:\Users\Admin\AppData\Local\Temp\df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Users\Admin\AppData\Local\Temp\df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe
  "C:\Users\Admin\AppData\Local\Temp\df07e9d7f9efced01c63ce3b973e5250e26ce436cf5fd296617343473dd3ff0a.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4968

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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:\ProgramData\data\registros.dat

Filesize
184B

MD5
72867b58018d3152504cba52800d1f80

SHA1
539c2496b78f44a5b258b4a6a6987894eab72718

SHA256
828a42631b16a7265b4a77c6e960c48422fa16e4988c33e40a8c2c66ce358f20

SHA512
c2d74d7c577882236e311d237957ca016290a20f24522ebc59e0a35af4b7671aa061775abc595777f9da4a6fd09827469de16122254187845866bb1c46e8fbf7

Download Submit
memory/2256-0-0x00000000005A9000-0x00000000005AE000-memory.dmp

Filesize
20KB

Download
memory/2256-1-0x0000000000400000-0x0000000000CD0000-memory.dmp

Filesize
8.8MB

Download
memory/4968-16-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-21-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-5-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-8-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-10-0x0000000000400000-0x0000000000CD0000-memory.dmp

Filesize
8.8MB

Download
memory/4968-9-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-15-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-3-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-2-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-4-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-22-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-28-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-29-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-34-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-35-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-40-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-42-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-47-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download
memory/4968-48-0x0000000000CD0000-0x0000000000D4F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads