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 1820 set thread context of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28

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
2256	vbc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28
PID 1820 wrote to memory of 2256	1820	f562d2ed0a866465736e756247c609795130c49f296659f338e43ed13c5eac3fN.exe	28

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:1820
- 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:2256

Network

DNS

7458remc.duckdns.org

vbc.exe

Remote address:

8.8.8.8:53

Request

7458remc.duckdns.org

IN A

Response

7458remc.duckdns.org

IN A

46.246.86.16
DNS

7458remc.duckdns.org

vbc.exe

Remote address:

8.8.8.8:53

Request

7458remc.duckdns.org

IN A

Response

7458remc.duckdns.org

IN A

46.246.86.16

46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

152 B
3
46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

152 B
3
46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

152 B
3
46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

152 B
3
46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

152 B
3
46.246.86.16:7548

7458remc.duckdns.org

vbc.exe

104 B
2

8.8.8.8:53

7458remc.duckdns.org

dns

vbc.exe

66 B
82 B
1
1

DNS Request

7458remc.duckdns.org

DNS Response

46.246.86.16
8.8.8.8:53

7458remc.duckdns.org

dns

vbc.exe

66 B
82 B
1
1

DNS Request

7458remc.duckdns.org

DNS Response

46.246.86.16

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

Loading Replay Monitor...

Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
103dcb0239c86d70007bc3cb7143c21c

SHA1
7b211a825a45d046f06a02bb6d623e20a1cc3d28

SHA256
daaecd63332d9beb847edc67ce5a2a3def9ceb23e1a3459addef592731ac489d

SHA512
8a8c412f198432555c45d7b4389cadcac002a487b341298b93a2bc473fa8a83155b87589fff3e6070ea42641f01b3af795fb053d65e397f90fb96cecd7af8b47

Download Submit
memory/1820-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1820-1-0x00000000001F0000-0x00000000002C0000-memory.dmp

Filesize
832KB

Download
memory/1820-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1820-18-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/2256-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-14-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-13-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-5-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-3-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2256-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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