remcos | 1364e3f0b350e7b83a82e9d75745a14b1d88ee737583dcf3450ec719fadf6ad8

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3218366390-1258052702-4267193707-1000\Control Panel\International\Geo\Nation	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe

Executes dropped EXE 2 IoCs

pid	Process
3620	wn2ra4ohzdr.exe
888	wn2ra4ohzdr.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-1-5-21-3218366390-1258052702-4267193707-1000\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 3620 set thread context of 888	3620	wn2ra4ohzdr.exe	96

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
888	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 3620	3580	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	94
PID 3580 wrote to memory of 3620	3580	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	94
PID 3580 wrote to memory of 3620	3580	098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe	94
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96
PID 3620 wrote to memory of 888	3620	wn2ra4ohzdr.exe	96

C:\Users\Admin\AppData\Local\Temp\098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe
"C:\Users\Admin\AppData\Local\Temp\098168b2280eefaacf38576dc5c2ef26b9d27034c62094aa4273aa4ccb24e7dc.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3580
- 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:3620
- - 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:888

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

Query Registry

T1012

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

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

Filesize
136KB

MD5
719a6f76bbcd3c9ec30c829a12280742

SHA1
192d890d514eadf9b126bbd5c96d013fcd680876

SHA256
81d729252f02d7d555bd1ae1061432044000cc586290ba542bb3ab3b76035e7c

SHA512
9f91c71f281c643a9c1751b22d03ded41222b359cf6eb9ddd0134c78b81e428703c99c3cbd5fba2d4c92e978aaacb01b292bfcd9ad630018fc840b4342b60eba

Download Submit
memory/888-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/888-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3580-4-0x0000000002D20000-0x0000000002D2A000-memory.dmp

Filesize
40KB

Download
memory/3580-21-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/3580-18-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/3580-6-0x0000000005100000-0x0000000005120000-memory.dmp

Filesize
128KB

Download
memory/3580-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/3580-5-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/3580-3-0x0000000005160000-0x00000000051F2000-memory.dmp

Filesize
584KB

Download
memory/3580-2-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/3580-1-0x0000000000650000-0x0000000000678000-memory.dmp

Filesize
160KB

Download
memory/3620-22-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/3620-23-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/3620-36-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download
memory/3620-38-0x0000000074B90000-0x0000000075340000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads