remcos | e47dfbb5bd64ac09562d7d20618ba7f024a0b7547d864217feb0586f7145cdb0

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-12-2024 07:39

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General

Target

Justificantedepago.exe
Size

1001KB
MD5

0c0b566099d8f32313cac142624e9b89
SHA1

c91bd91424a20a9d45cc62cd3aaa85afefe60a74
SHA256

e47dfbb5bd64ac09562d7d20618ba7f024a0b7547d864217feb0586f7145cdb0
SHA512

de9de86a26a0d0eee105908e1c378be6c18a99a4c03b7d8a6e9d2049a0fc830903e077684156928d7b97176c6fa05a6d9e66793760e2a9edd1b54dd22c98fa2d
SSDEEP

24576:2oIeeaYI32l/Pow+E9rW2rtaldr+3dmBABsNJUI:JBeaWl/Pow+EW2RaLrbw

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:7643

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-14OQCD
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2112	powershell.exe
2744	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2512 set thread context of 2540	2512	Justificantedepago.exe	37

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 4 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Justificantedepago.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
2816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2512	Justificantedepago.exe
2512	Justificantedepago.exe
2512	Justificantedepago.exe
2112	powershell.exe
2744	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	Justificantedepago.exe
Token: SeDebugPrivilege	2112	powershell.exe
Token: SeDebugPrivilege	2744	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	Justificantedepago.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2112	2512	Justificantedepago.exe	31
PID 2512 wrote to memory of 2112	2512	Justificantedepago.exe	31
PID 2512 wrote to memory of 2112	2512	Justificantedepago.exe	31
PID 2512 wrote to memory of 2112	2512	Justificantedepago.exe	31
PID 2512 wrote to memory of 2744	2512	Justificantedepago.exe	33
PID 2512 wrote to memory of 2744	2512	Justificantedepago.exe	33
PID 2512 wrote to memory of 2744	2512	Justificantedepago.exe	33
PID 2512 wrote to memory of 2744	2512	Justificantedepago.exe	33
PID 2512 wrote to memory of 2816	2512	Justificantedepago.exe	34
PID 2512 wrote to memory of 2816	2512	Justificantedepago.exe	34
PID 2512 wrote to memory of 2816	2512	Justificantedepago.exe	34
PID 2512 wrote to memory of 2816	2512	Justificantedepago.exe	34
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37
PID 2512 wrote to memory of 2540	2512	Justificantedepago.exe	37

C:\Users\Admin\AppData\Local\Temp\Justificantedepago.exe
"C:\Users\Admin\AppData\Local\Temp\Justificantedepago.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2512
- 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\Justificantedepago.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2112
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TYLngHLuy.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2744
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYLngHLuy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1EE6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2816
- C:\Users\Admin\AppData\Local\Temp\Justificantedepago.exe
  "C:\Users\Admin\AppData\Local\Temp\Justificantedepago.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
755fa965c450ea04a5817d5904ad04c4

SHA1
8fb7f459bf887657acf84b10187746a40b08c551

SHA256
8a4e1b4b5aef37cb836f8560167e3e60d5d1f89f1f965fd4af7312a0ba260ffd

SHA512
ed144630eed7d39eb2c7581eeba650e982f524dc7466524e95089ac14d71396c5e1b0b6e92a89785cf0883acd1bd9a9466c0ec40d4aa50685ac4bacc48f0836a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1EE6.tmp

Filesize
1KB

MD5
ece6c5e62c31352617694f10d12ddc9a

SHA1
4deadaaa561ce6538480a1ecb12e8070c2c84b58

SHA256
4ccedfd8110c6017e334b191340ea8536d750d9f3cfeb19964a60f6b1dfb107f

SHA512
70f18141a9475cbd7208e89c9c35b993c94b9edc06c6cd582e0a4923d12ab4bd34072f9d4f748554f54dc62a31b845d88bbf91d4c6880420b855763bed608a15

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\RI4MW45IQHT1JVB4OCJQ.temp

Filesize
7KB

MD5
9d09b57f05d29307969e64547566bca2

SHA1
c849d4b7501ab7b126d47e22c1d10337b1511585

SHA256
cc04bfde77a56aff6ad2134c9bcef22c8e79b132734fdee592191ce5b1af6df9

SHA512
f43e03090d98c1b900f0d28a9a936b39a17e402164470312696a8df6f0580395a67d9fc93dcd644a39462cdbed6c92715e0077b598cff67d1e0d47b2b5f4a01f

Download Submit
memory/2512-0-0x000000007426E000-0x000000007426F000-memory.dmp

Filesize
4KB

Download
memory/2512-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/2512-2-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/2512-3-0x0000000000490000-0x00000000004A8000-memory.dmp

Filesize
96KB

Download
memory/2512-4-0x000000007426E000-0x000000007426F000-memory.dmp

Filesize
4KB

Download
memory/2512-5-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/2512-6-0x0000000007730000-0x00000000077F4000-memory.dmp

Filesize
784KB

Download
memory/2512-39-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/2540-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-87-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-89-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2540-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download