remcos | eed19736f86e5b33a89ab883adf5544a3fb216e3a768d7e0cd8689f7021d1c17

General

Target

MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
Size

602KB
MD5

f39bb60d8fec0bc9b9cad5c3124e85ce
SHA1

11e14e4d902fac8740bd8e71456786ff48217079
SHA256

eed19736f86e5b33a89ab883adf5544a3fb216e3a768d7e0cd8689f7021d1c17
SHA512

129bfc8391c713304dc1cceb3291402f385d729c999f8d47a471264d5516922b12ce61370c9bf8cf8e459c31f7cab547ca146642f7f62144ce471fd9651bcfe8
SSDEEP

12288:OI+NLoJRnFCcsdRz5QLoxAXSs5Wp3jmKXcWNyvZMxrND3sPFTUBCi/:OlxRzm7Xn5+3j3MAyhMxrND3slUBN

Score

10^/10

remcos uc rat

Malware Config

Extracted

Family

remcos

Botnet

UC

C2

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe

description pid process target process

PID 1764 set thread context of 1444 1764 MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe RegSvcs.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exePowershell.exe

pid process

1764 MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
1272 Powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exePowershell.exe

description pid process

Token: SeDebugPrivilege 1764 MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
Token: SeDebugPrivilege 1272 Powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1444 RegSvcs.exe

description	pid	process	target process
PID 1764 set thread context of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe

pid	process
1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
1272	Powershell.exe

description	pid	process
Token: SeDebugPrivilege	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
Token: SeDebugPrivilege	1272	Powershell.exe

pid	process
1444	RegSvcs.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe

description	pid	process	target process
PID 1764 wrote to memory of 1272	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	Powershell.exe
PID 1764 wrote to memory of 1272	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	Powershell.exe
PID 1764 wrote to memory of 1272	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	Powershell.exe
PID 1764 wrote to memory of 1272	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	Powershell.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1168	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe
PID 1764 wrote to memory of 1444	1764	MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe
"C:\Users\Admin\AppData\Local\Temp\MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\MSKD223775563_BL914697207_MAERSK_AMAZON_INV20221211.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Syhdustem.exe'
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1272

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
PID:1168

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:1444

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1272-77-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/1272-78-0x0000000074110000-0x00000000746BB000-memory.dmp

Filesize
5.7MB

Download
memory/1272-56-0x0000000000000000-mapping.dmp

Download
memory/1444-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-72-0x00000000004327A4-mapping.dmp

Download
memory/1444-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1444-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-58-0x00000000003E0000-0x00000000003FC000-memory.dmp

Filesize
112KB

Download
memory/1764-55-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

Filesize
8KB

Download
memory/1764-54-0x0000000000130000-0x00000000001CE000-memory.dmp

Filesize
632KB

Download

Analysis

Sharing