remcos | 9bf8f141e0456aadf44a97bae53b85a020592f17ee079a4dfc0ad37b68c5b7f1

General

Target

Portafolio Digital de Transacción Electronica 0002938248924.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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	Portafolio Digital de Transacción Electronica 0002938248924.exe

Deletes itself 1 IoCs

pid	Process
3888	WScript.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SpeedDesignerEditor = "C:\\Users\\Admin\\Music\\SpeedDesignerUpdater\\SpeedVideo.exe"	Portafolio Digital de Transacción Electronica 0002938248924.exe

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 3 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	Portafolio Digital de Transacción Electronica 0002938248924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Portafolio Digital de Transacción Electronica 0002938248924.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	Portafolio Digital de Transacción Electronica 0002938248924.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4488	Portafolio Digital de Transacción Electronica 0002938248924.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 4488	976	Portafolio Digital de Transacción Electronica 0002938248924.exe	86
PID 976 wrote to memory of 4488	976	Portafolio Digital de Transacción Electronica 0002938248924.exe	86
PID 976 wrote to memory of 4488	976	Portafolio Digital de Transacción Electronica 0002938248924.exe	86
PID 976 wrote to memory of 4488	976	Portafolio Digital de Transacción Electronica 0002938248924.exe	86
PID 976 wrote to memory of 4488	976	Portafolio Digital de Transacción Electronica 0002938248924.exe	86
PID 4488 wrote to memory of 3888	4488	Portafolio Digital de Transacción Electronica 0002938248924.exe	88
PID 4488 wrote to memory of 3888	4488	Portafolio Digital de Transacción Electronica 0002938248924.exe	88
PID 4488 wrote to memory of 3888	4488	Portafolio Digital de Transacción Electronica 0002938248924.exe	88

C:\Users\Admin\AppData\Local\Temp\Portafolio Digital de Transacción Electronica 0002938248924.exe
"C:\Users\Admin\AppData\Local\Temp\Portafolio Digital de Transacción Electronica 0002938248924.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:976
- C:\Users\Admin\AppData\Local\Temp\Portafolio Digital de Transacción Electronica 0002938248924.exe
  "C:\Users\Admin\AppData\Local\Temp\Portafolio Digital de Transacción Electronica 0002938248924.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\fsonpzkif.vbs"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3888

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

Query Registry

1

T1012

System Information Discovery

2

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\fsonpzkif.vbs

Filesize
708B

MD5
35b74931e98c13c89b99d62e46c9048d

SHA1
3385c7c35d3915ae66c8f053313d2e3919c5a7c1

SHA256
62a93830c48cf82943e42a088c584ba84abaf1a6bc550073c2d1085b531dfffb

SHA512
5c9ce5d7a59683e4e8d2a3277e7c0be2ba17ecdf1bdcd186356f612e86b0cb5ccd0d9fcecaf0c9f67e700c83b7be2052581c775ac0ebcd9a13647b45c10c8854

Download Submit
memory/976-0-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-1-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-5-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-7-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-9-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-6-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-2-0x0000000000619000-0x0000000000631000-memory.dmp

Filesize
96KB

Download
memory/976-27-0x0000000000619000-0x0000000000631000-memory.dmp

Filesize
96KB

Download
memory/976-3-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-12-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-4-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/976-11-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4488-14-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-8-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-19-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-15-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-20-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-21-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-22-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-23-0x0000000000400000-0x00000000008D2000-memory.dmp

Filesize
4.8MB

Download
memory/4488-25-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-18-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-31-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-36-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download
memory/4488-13-0x00000000008E0000-0x0000000000962000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads