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 2092 set thread context of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2752	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31
PID 2092 wrote to memory of 2752	2092	c793394ea0bd214459520e1403e523cf59936ddfe5a1a60ad59e0457143725e5.exe	31

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:2092
- 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:2752

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

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Downloads

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

Filesize
144B

MD5
875ca204f77f2a28801a550d8753b95b

SHA1
4844997d6bb1a979c48286d042efe70dcfa9554f

SHA256
140ea9ea11d1e69696885aea6de966c079e4edf5281f314cfc165964a204cf37

SHA512
b1068a7f0dc8795ad67b575ea4e6b33a4a7cc8505a04495df8a04d9da2ea00b591b26aab638f1341d4f0c5f2f6dae914452d222c2115a498d7951b7d84cc5252

Download Submit
memory/2092-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x00000000001E0000-0x0000000000302000-memory.dmp

Filesize
1.1MB

Download
memory/2092-2-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-3-0x00000000004F0000-0x0000000000500000-memory.dmp

Filesize
64KB

Download
memory/2092-4-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2092-5-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-6-0x00000000056E0000-0x00000000057DA000-memory.dmp

Filesize
1000KB

Download
memory/2092-7-0x00000000054F0000-0x000000000556A000-memory.dmp

Filesize
488KB

Download
memory/2092-31-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2752-12-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-15-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-11-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-9-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-27-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-30-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-26-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-24-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-18-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-16-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-8-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download
memory/2752-21-0x0000000000400000-0x000000000047A000-memory.dmp

Filesize
488KB

Download

Analysis

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