remcos | f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3f

General

Target

f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe
Size

811KB
MD5

c03e260ac26dd90d10baaf0bb3975400
SHA1

c137d2c639b64fd4e4d5dcb03b62ff5d81d3025d
SHA256

f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3f
SHA512

b4721b2dae920aed9e4f2edcee638ba1d639144ab630fd3455810ef33a5c312e8ace7f46b8e048c8d231f0dcbd7851d06621035677140f0d3ad5161e0d3d74f0
SSDEEP

12288:a2hsDv8k1J5hS7KUiMFNSh5HrOjeJtghvihfA4TsAqZHrFWn/5er0XuweTv:a24kIsFNArOa/gsJAbrQerxweT

Score

10^/10

remcos octubre discovery rat

Malware Config

Extracted

Family

remcos

Botnet

octubre

C2

7458remc.duckdns.org:7548

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
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-QN8FUF
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3960 set thread context of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82

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	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
632	vbc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82
PID 3960 wrote to memory of 632	3960	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	82

C:\Users\Admin\AppData\Local\Temp\f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe
"C:\Users\Admin\AppData\Local\Temp\f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3960
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
2636a9db4cdc953e4fbd9d15d32512f7

SHA1
7f67b5d454e69e5369918bf3d9ff0d7f05542e2c

SHA256
408669160e604fc0608cf84a102e4ed6b7317301f397eab9dbf45f452c0de82b

SHA512
82b5b58a9032098d6c0a3f38f8981b9fcbe2c0391ad3f2bc9df4f02ae4f4fe1c4e67a20786023f95364252aa645ba1d4c30a683cf8ce1b0936ef7c3ff88da2d2

Download Submit
memory/632-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-3-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-4-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-6-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/632-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3960-1-0x0000000000BE0000-0x0000000000CB0000-memory.dmp

Filesize
832KB

Download
memory/3960-12-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/3960-2-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/3960-0-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download

Analysis

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