remcos | 43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36

General

Target

43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe
Size

852KB
MD5

2aa3e6891a29471057d6757b4ae7be70
SHA1

45e6bd7f8578facc1391877744a5bd18723d5b30
SHA256

43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36
SHA512

299fb4ba25b370d3abe017f773ee0c30a98d78d9b87078baa83a04aefc1b6b390876e2cf16f5eda4a2ed378d394d685dbcde2057d4d0f7e15d886f78ffe9bd4f
SSDEEP

24576:c7bmguo9DkXFCkTqVrkFlfEbNzDe6Vryr:kb+8DIhp8NRyr

Score

10^/10

remcos sep 26 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

SEP 26

C2

zaid.zapto.org:9373

103.186.117.97:5584

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-W2KFKR
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

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2944	powershell.exe
2752	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2408 set thread context of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36

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 5 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2944	powershell.exe
2752	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2944	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1448	MSBuild.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2944	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	30
PID 2408 wrote to memory of 2944	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	30
PID 2408 wrote to memory of 2944	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	30
PID 2408 wrote to memory of 2944	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	30
PID 2408 wrote to memory of 2752	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	32
PID 2408 wrote to memory of 2752	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	32
PID 2408 wrote to memory of 2752	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	32
PID 2408 wrote to memory of 2752	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	32
PID 2408 wrote to memory of 2860	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	33
PID 2408 wrote to memory of 2860	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	33
PID 2408 wrote to memory of 2860	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	33
PID 2408 wrote to memory of 2860	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	33
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36
PID 2408 wrote to memory of 1448	2408	43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe	36

C:\Users\Admin\AppData\Local\Temp\43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe
"C:\Users\Admin\AppData\Local\Temp\43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- 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\43cb1f81a50bfc91ff025a0c0ddfc9d9dc14dca28bbf966cd3240162fc1eeb36.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2944
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\jemWTfPfjK.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jemWTfPfjK" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC5EE.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2860
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
d72f98c184183994d6702ca6705654b3

SHA1
c4818d43287e9c1011c371daea4e0559c3ca133b

SHA256
33306cc242ae66174a78d7aca6b032bc87a9f157fa6219ce8b89a0f2217fad1d

SHA512
d576dbd9baa5af4e4429e4cbd013781aef38f3c5608ed19df81bbd40bc7bb5e4d8e7927a8d3f3dfefa24a31264186f14a30e101469503c64ef7d6ee6e4348f06

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC5EE.tmp

Filesize
1KB

MD5
fb0e94e726e89c33a6e1a81e18813dd3

SHA1
d615b130ecd6b9540a0f772ab2969675cf5143e6

SHA256
599fb6f3c307a66e9bea7c4c98dfce22a429fcce498e5fc0d0db8ef96091bcc6

SHA512
37f5ce21a30ded4d98071eb59fc829ff0dea6701f61110997f2435919a9cb140dcaf59e83ebd1f48e12ffc918caf4763b1c1e937b7aaed857ed5fd52483a9cc8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
c675aa00a2890395160df1856aa3eb19

SHA1
2c3fc797c3c1910026dffe117dff97b0b82fed49

SHA256
6a8fa2ae32b26fab1c699f77f0b16d0585940aca5006ac3fd71269a252053203

SHA512
f73c976c4c04c71044d020bfa369442e0b643227a895f770cc95cd8d89f4ac2816b096301d65f10b65bdd02d64cf703d38c7a64f7238f0fe39819604d11e21ea

Download Submit
memory/1448-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-35-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1448-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1448-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2408-1-0x0000000000D30000-0x0000000000E0C000-memory.dmp

Filesize
880KB

Download
memory/2408-42-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2408-4-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

Filesize
4KB

Download
memory/2408-0-0x0000000074C1E000-0x0000000074C1F000-memory.dmp

Filesize
4KB

Download
memory/2408-2-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download
memory/2408-3-0x0000000000480000-0x0000000000492000-memory.dmp

Filesize
72KB

Download
memory/2408-6-0x0000000004D80000-0x0000000004E3E000-memory.dmp

Filesize
760KB

Download
memory/2408-5-0x0000000074C10000-0x00000000752FE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads