remcos | 66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-09-2024 01:24

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General

Target

66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
Size

851KB
MD5

ff6f202ace40743852a03f34b7b41707
SHA1

31e96d82538ecd77f5a190bbc070065cb64bd12b
SHA256

66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490
SHA512

94edc736129032ae8c07db023f9d264c9743aab4cf2d294de995d780c71dcda33b7637a23e8161dbdf830fa4affd030bbe3912d7d0acc5b9061b81ee42e8d174
SSDEEP

24576:KYBfQYzELibC4jGl7Wud08XzvFn9j5Utq:KYBtbC4ql0ozt9j5Ut

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

107.175.229.139:8823

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-2BGC0K
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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe	Powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2660 set thread context of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2760	Powershell.exe

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	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2760	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	Powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2940	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2760	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 2660 wrote to memory of 2760	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 2660 wrote to memory of 2760	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 2660 wrote to memory of 2760	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	30
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32
PID 2660 wrote to memory of 2940	2660	66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe	32

C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
"C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
  "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
  2⤵
  - Drops startup file
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe
  "C:\Users\Admin\AppData\Local\Temp\66c50343775c162862ac27a735c66927a9b3fda4a05cd0eaa21fecbca3f6c490.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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
176a9b76d9b685ce241a21fbef389350

SHA1
e7232c94de316e2967e6e0e72017dea69ff6cfb1

SHA256
2ae3c4c8e37a266826c74f9d17b2c877f5af33b1d95e4300cee8a5516e0cf51b

SHA512
d5e05bb5cf76ea79098906aea989006907bc11d18e4641e23b23241605feb93cab6f4c07d1ef1086b404219092b4ace929e8b94f60acb34b928313bc0dbfaf9d

Download Submit
memory/2660-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/2660-1-0x0000000000040000-0x000000000011C000-memory.dmp

Filesize
880KB

Download
memory/2660-2-0x0000000004BF0000-0x0000000004C9E000-memory.dmp

Filesize
696KB

Download
memory/2660-3-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2660-13-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/2660-43-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/2760-6-0x000000006F9B1000-0x000000006F9B2000-memory.dmp

Filesize
4KB

Download
memory/2760-7-0x000000006F9B0000-0x000000006FF5B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-8-0x000000006F9B0000-0x000000006FF5B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-9-0x000000006F9B0000-0x000000006FF5B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-10-0x000000006F9B0000-0x000000006FF5B000-memory.dmp

Filesize
5.7MB

Download
memory/2760-12-0x000000006F9B0000-0x000000006FF5B000-memory.dmp

Filesize
5.7MB

Download
memory/2940-16-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-37-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-42-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-41-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-38-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-27-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2940-24-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-22-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-21-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-20-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-15-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-32-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-23-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-18-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-45-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-46-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-48-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-50-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-52-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-53-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-57-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-58-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-60-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-62-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-66-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-67-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-71-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-72-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-77-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-78-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-79-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-80-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-83-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-84-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-86-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-87-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-89-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-90-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-95-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-96-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-98-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-99-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-101-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download
memory/2940-102-0x0000000000160000-0x00000000001E2000-memory.dmp

Filesize
520KB

Download