remcos | c73c1395d9585ff79d683d069a6803006bcff169937bd2e6687fac3284d314ec

General

Target

OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
Size

4.9MB
MD5

cbdd93c0f2fdc3549188bad11af2cbb6
SHA1

bb8023707452a17e8236cae8d2e7a11cc0ec8c1d
SHA256

8aa24e0acffe7459f0662e8f3852fc34ed65a6e05cd468bdbc4c7a30c480a169
SHA512

8cfcdee2366f3d7e276070e7a353346600f58da66c4dbe940a8db58a5b1b6c1bea91fac7fd6a99b8db7a9e3bc09f2b491807e2af91b1aba6b16631a15f41a919
SSDEEP

49152:GSq2zkGQxfkScRd2j4309+eZypv0rMHul1gUuu9blTeYbkqFTckW4lLFQoMHMZKB:GStzEx9xypvogUuuhkYbkqFWCMojwH

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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ResDesignerEditor = "C:\\Users\\Admin\\Music\\ResDesignerUpdater\\ResVideo.exe"	OFICIO 002394939249 TESORERIA No. 0399498-002024.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	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2428	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4392 wrote to memory of 2428	4392	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe	86
PID 4392 wrote to memory of 2428	4392	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe	86
PID 4392 wrote to memory of 2428	4392	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe	86
PID 4392 wrote to memory of 2428	4392	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe	86
PID 4392 wrote to memory of 2428	4392	OFICIO 002394939249 TESORERIA No. 0399498-002024.exe	86

C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
"C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe
  "C:\Users\Admin\AppData\Local\Temp\OFICIO 002394939249 TESORERIA No. 0399498-002024.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2428

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\regist\registros.dat

Filesize
184B

MD5
29c8b669c975877d5db9c0aaed0c98b3

SHA1
ac00e0ff6dabbd51766737ba77228215888e811b

SHA256
1be8b614ff14cf23122a5fb3b227f9408f8262615ea370c2e3f32fca3c670645

SHA512
a1e7d6f02e7c3bfc84711e2659584b29d4cadb74669998d033e626daeb0327b965fbb302a33a9d3e660e38625f771a8396acb1950e4e66888cdf1e0e237612e3

Download Submit
memory/2428-31-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-38-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-63-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-7-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-62-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-54-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-47-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-11-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-46-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-12-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-39-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-16-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-13-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-17-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-19-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-30-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-18-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/2428-21-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/2428-20-0x0000000000960000-0x00000000009E2000-memory.dmp

Filesize
520KB

Download
memory/4392-25-0x0000000000514000-0x000000000052D000-memory.dmp

Filesize
100KB

Download
memory/4392-0-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-2-0x0000000000514000-0x000000000052D000-memory.dmp

Filesize
100KB

Download
memory/4392-4-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-5-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-8-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-6-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-10-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-1-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download
memory/4392-3-0x0000000000400000-0x0000000000955000-memory.dmp

Filesize
5.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads