remcos | b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7

General

Target

b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe
Size

955KB
MD5

52c642cdb7298bb11558da681d352978
SHA1

5ffacf37fb2e05b0c7078f89554e949afd369318
SHA256

b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7
SHA512

daf8b97540c58b58a86a2e73fc907ced0ba332d19811047491d59ae40ce53dc9ed613773b107da5fb8d96b59c1247a18b35eb5fbe4c8be2b016f65a80594f7d0
SSDEEP

24576:0IeeIW8rjYO/CjNIvTc4ST4AWptCaWaZldbmi+3I:0BeBLhIvwHkB7CfaNdc

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ddpo.duckdns.org:59033

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-NUED7N
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2656	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2656	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2656	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	31
PID 3052 wrote to memory of 2656	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	31
PID 3052 wrote to memory of 2656	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	31
PID 3052 wrote to memory of 2656	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	31
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33
PID 3052 wrote to memory of 2752	3052	b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe	33

C:\Users\Admin\AppData\Local\Temp\b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe
"C:\Users\Admin\AppData\Local\Temp\b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2656
- C:\Users\Admin\AppData\Local\Temp\b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe
  "C:\Users\Admin\AppData\Local\Temp\b9fdce90b71b584cc85d90027dc206949a6d92cf92159112e2f96f5578fc78b7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2752

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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

memory/2752-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2752-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3052-29-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/3052-1-0x0000000001240000-0x0000000001334000-memory.dmp

Filesize
976KB

Download
memory/3052-3-0x0000000000430000-0x0000000000448000-memory.dmp

Filesize
96KB

Download
memory/3052-6-0x00000000010D0000-0x0000000001194000-memory.dmp

Filesize
784KB

Download
memory/3052-5-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/3052-4-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/3052-0-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/3052-2-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing