remcos | 4660f046efd070aa71962df9b4f89f9ae34a8f49cfb9ebd514690d0efc4fd1ca

Resubmissions

28-12-2022 21:57

221228-1tx4kabg24 10

28-12-2022 20:09

221228-yw4ysaee6y 10

Analysis

max time kernel
150s
max time network
130s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
28-12-2022 21:57

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General

Target

Swift copy.exe
Size

577KB
MD5

cdb913e2799fbc69725dfd5f8449d1c7
SHA1

00e54606f35a1e4ae40c0507b87b588018098e09
SHA256

4660f046efd070aa71962df9b4f89f9ae34a8f49cfb9ebd514690d0efc4fd1ca
SHA512

4037c280d922e395c7aa30fb832bf78c2aa9a703098ad0ac699cec382ef81143a07a13bcadb9e92a5690318458a794690919da266457be4e9b6276f13e31a60c
SSDEEP

12288:3p6DNj5Z1JCFtOiL9d11qG7mmQh6s16qd06qblCi/:3pwx5Z1gTjD1PAhT1Rm6ulN

Score

10^/10

remcos uc rat

Malware Config

Extracted

Family

remcos

Botnet

ucremcz1.ddns.net:1823

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
BIN.exe
copy_folder
BIN
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-X402GF
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
bin
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

Processes:

Powershell.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Swift copy.exe

description pid process target process

PID 1320 set thread context of 1716 1320 Swift copy.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

Powershell.exe

pid process

432 Powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Swift copy.exePowershell.exe

description pid process

Token: SeDebugPrivilege 1320 Swift copy.exe
Token: SeDebugPrivilege 432 Powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1716 RegSvcs.exe

description	pid	process	target process
PID 1320 set thread context of 1716	1320	Swift copy.exe	RegSvcs.exe

pid	process
432	Powershell.exe

description	pid	process
Token: SeDebugPrivilege	1320	Swift copy.exe
Token: SeDebugPrivilege	432	Powershell.exe

pid	process
1716	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Swift copy.exe

description	pid	process	target process
PID 1320 wrote to memory of 432	1320	Swift copy.exe	Powershell.exe
PID 1320 wrote to memory of 432	1320	Swift copy.exe	Powershell.exe
PID 1320 wrote to memory of 432	1320	Swift copy.exe	Powershell.exe
PID 1320 wrote to memory of 432	1320	Swift copy.exe	Powershell.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe
PID 1320 wrote to memory of 1716	1320	Swift copy.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Swift copy.exe
"C:\Users\Admin\AppData\Local\Temp\Swift copy.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\Swift copy.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Systensnsnm.exe'
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:432

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1716

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/432-56-0x0000000000000000-mapping.dmp

Download
memory/432-78-0x0000000070420000-0x00000000709CB000-memory.dmp

Filesize
5.7MB

Download
memory/432-76-0x0000000070420000-0x00000000709CB000-memory.dmp

Filesize
5.7MB

Download
memory/1320-54-0x0000000000AA0000-0x0000000000B38000-memory.dmp

Filesize
608KB

Download
memory/1320-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1320-58-0x0000000000200000-0x000000000021C000-memory.dmp

Filesize
112KB

Download
memory/1716-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-72-0x00000000004327A4-mapping.dmp

Download
memory/1716-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1716-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download