remcos | 1364e3f0b350e7b83a82e9d75745a14b1d88ee737583dcf3450ec719fadf6ad8

Analysis

max time kernel
145s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:25

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General

Target

098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe
Size

136KB
MD5

2f895cecfca4864762f3fc4f9824b1d5
SHA1

473d869827e00c166977718907c289e48c8e599f
SHA256

098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc
SHA512

bdda49fa876eaade3247efba192924ef2e67f7e93f41bcd8c37d3c5ebebb4091bfe7a167a0796cf5187d08b786071399558e728f3d4ac420816b444877dfbfb1
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKd:xPd4n/M+WLcilrpgGH/GwY87mVmIXt

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
OfficeUpgrade.exe
copy_folder
OfficeUpgrade
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
Upgrader.dat
keylog_flag
false
keylog_folder
Upgrader
keylog_path
%AppData%
mouse_option
false
mutex
req_khauflaoyr
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
OfficeUpgrade
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

Executes dropped EXE 2 IoCs

pid	Process
2452	wn2ra4ohzdr.exe
2804	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
600	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 2804	2452	wn2ra4ohzdr.exe	32

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 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	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2804	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 600 wrote to memory of 2452	600	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	31
PID 600 wrote to memory of 2452	600	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	31
PID 600 wrote to memory of 2452	600	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	31
PID 600 wrote to memory of 2452	600	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	31
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32
PID 2452 wrote to memory of 2804	2452	wn2ra4ohzdr.exe	32

C:\Users\Admin\AppData\Local\Temp\098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe
"C:\Users\Admin\AppData\Local\Temp\098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:600
- C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
  "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
136KB

MD5
7ad57cac200d60fda44399a892a64cd8

SHA1
0d19fb9c248cf4078f0312cfedd81acfa90cdfa3

SHA256
d95ff0d6160cc1a1a435f7526a6e4fc75f8bf966ca1d6b89fb4680f6bd0240a2

SHA512
0b26d48256c949d3715c373d18cb1b29223b50c203b0f48745bd0c108b945e5eb6545ee2c4aae71db581235220923350194704836ce31143c065de602160107b

Download Submit
memory/600-1-0x0000000000C10000-0x0000000000C38000-memory.dmp

Filesize
160KB

Download
memory/600-2-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/600-3-0x0000000000410000-0x0000000000430000-memory.dmp

Filesize
128KB

Download
memory/600-12-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/600-0-0x000000007470E000-0x000000007470F000-memory.dmp

Filesize
4KB

Download
memory/2452-33-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2452-13-0x0000000000D70000-0x0000000000D98000-memory.dmp

Filesize
160KB

Download
memory/2452-14-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2452-15-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2452-34-0x0000000074700000-0x0000000074DEE000-memory.dmp

Filesize
6.9MB

Download
memory/2804-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2804-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2804-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads