remcos | 33dae786b8b7debb0443f3ffd7922a3366072c0f3cb8c5a14cb6168938f0eecf

General

Target

13533b986d24ba176e64c6e7f8baa0a0.exe
Size

4.5MB
MD5

13533b986d24ba176e64c6e7f8baa0a0
SHA1

20b1526c6df49a5b7b6eb3f456a8f29f011f9c6f
SHA256

33dae786b8b7debb0443f3ffd7922a3366072c0f3cb8c5a14cb6168938f0eecf
SHA512

5896593d110faa753e262e6f357d6767c3c9ce378c61d2c7db15cf0f720b79a7e54b940fb12fa5bb2e5421a64b94534dee68b0b16e3a6465f3532aea42b8d4be
SSDEEP

49152:QyVdmxB5GSL4m35GyJZYMrbcDifMb2TaIsjE1zSOmFaTXgaFInzHpGdk5KySXINi:QybbOGyJZYMrb7fMb2nZhdQWCMfj

Score

10^/10

remcos octu discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

OCTU

C2

segurosbolivar24.con-ip.com:2006

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
registros.dat
keylog_flag
false
keylog_folder
regist
mouse_option
false
mutex
ljnghvfghujkvgnasftnz-X8YJ1F
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

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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SpeedDesignerEditor = "C:\\Users\\Admin\\Music\\SpeedDesignerUpdater\\SpeedVideo.exe"	13533b986d24ba176e64c6e7f8baa0a0.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	13533b986d24ba176e64c6e7f8baa0a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	13533b986d24ba176e64c6e7f8baa0a0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1276	13533b986d24ba176e64c6e7f8baa0a0.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 1276	4552	13533b986d24ba176e64c6e7f8baa0a0.exe	86
PID 4552 wrote to memory of 1276	4552	13533b986d24ba176e64c6e7f8baa0a0.exe	86
PID 4552 wrote to memory of 1276	4552	13533b986d24ba176e64c6e7f8baa0a0.exe	86
PID 4552 wrote to memory of 1276	4552	13533b986d24ba176e64c6e7f8baa0a0.exe	86
PID 4552 wrote to memory of 1276	4552	13533b986d24ba176e64c6e7f8baa0a0.exe	86

C:\Users\Admin\AppData\Local\Temp\13533b986d24ba176e64c6e7f8baa0a0.exe
"C:\Users\Admin\AppData\Local\Temp\13533b986d24ba176e64c6e7f8baa0a0.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Local\Temp\13533b986d24ba176e64c6e7f8baa0a0.exe
  "C:\Users\Admin\AppData\Local\Temp\13533b986d24ba176e64c6e7f8baa0a0.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1276

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

Replay Monitor

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Downloads

C:\ProgramData\regist\registros.dat

Filesize
184B

MD5
938a2c2bb91ef37b7bf9a4fc1c7389b2

SHA1
b275e677636f7da3ae2bfa53bafab3dd52797526

SHA256
46b5235ffad56e755cc711671c575ae389b9d750b1653695f8092033c760c8f0

SHA512
74d19d900769c73b6fe5d37a6e7333a44b4bada407468e21592c6774297c51626e5355e3599f5609cdcebf14e433ceb7c68dd94aa1138407219ebb4878ef3f57

Download Submit
memory/1276-19-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-14-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-20-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-71-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-22-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-70-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-8-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-17-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-63-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-30-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-13-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-21-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/1276-62-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-39-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-38-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-31-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-12-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-23-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/1276-25-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4552-7-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-27-0x0000000000619000-0x0000000000631000-memory.dmp

Filesize
96KB

Download
memory/4552-1-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-2-0x0000000000619000-0x0000000000631000-memory.dmp

Filesize
96KB

Download
memory/4552-5-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-0-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-3-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-18-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-11-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4552-6-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads