remcos | 334083d2b0927a9f6845639d74e6fb88c54927e846b9304862f46480c3f70f2d

General

Target

c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe
Size

1.1MB
MD5

f47ede3af9a6ca374a0a54a4194dd7d2
SHA1

523f74e5de756049cf0445ee135879678c93c80a
SHA256

c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5
SHA512

e74d3fb2654a816188a7a4273f25022dfd1f4764b92861c1d72cc61343899a3195a10256f9c86e4dfd404e1fa141a7cc2daf4e2a9aeadf8100fe47d7a0722267
SSDEEP

24576:PK777777777777dFYVE6/Lf0BfGqv0xs7qdZmTgwOK545tq:y7777777777774feG1CqXmUIW5

Score

10^/10

remcos srvchostrix discovery rat

Malware Config

Extracted

Family

remcos

Botnet

srvchostrix

C2

winvohost.ddns.net:11024

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-U0TX4T
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4380 set thread context of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91

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	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2812	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91
PID 4380 wrote to memory of 2812	4380	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	91

C:\Users\Admin\AppData\Local\Temp\c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe
"C:\Users\Admin\AppData\Local\Temp\c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
144B

MD5
188221d03319af467ad4e060c8577260

SHA1
9e91e3e2638a99a23fc4c5d9d48ec7e68341df6a

SHA256
37c79048dce728438671f3147744ae2d648a4c74a792de62a911450337b6483a

SHA512
bfe39af839f5fcbf7c286299392cc6f699c22ac5701ea22d53f21369788e78322b815a51f3e47964ec9442f102ab30269612f53373fdc4c530bc80ae7987076f

Download Submit
memory/2812-12-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-24-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-16-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-21-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-19-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-15-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2812-13-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/4380-5-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-9-0x0000000006D10000-0x0000000006DAC000-memory.dmp

Filesize
624KB

Download
memory/4380-10-0x0000000006DB0000-0x0000000006EAA000-memory.dmp

Filesize
1000KB

Download
memory/4380-11-0x0000000006EC0000-0x0000000006F3A000-memory.dmp

Filesize
488KB

Download
memory/4380-8-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-7-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4380-6-0x0000000005460000-0x0000000005470000-memory.dmp

Filesize
64KB

Download
memory/4380-0-0x000000007539E000-0x000000007539F000-memory.dmp

Filesize
4KB

Download
memory/4380-4-0x0000000005280000-0x000000000528A000-memory.dmp

Filesize
40KB

Download
memory/4380-20-0x0000000075390000-0x0000000075B40000-memory.dmp

Filesize
7.7MB

Download
memory/4380-3-0x00000000051D0000-0x0000000005262000-memory.dmp

Filesize
584KB

Download
memory/4380-2-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/4380-1-0x00000000007F0000-0x0000000000912000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing