remcos | b8c5e2c8477706f3f54e152443718dcec270889002289aa1730eabc5ba3f312f

Analysis

max time kernel
133s
max time network
145s
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, 06:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe
Size

135KB
MD5

62e5ced86ccb25c5692dda3779968bbf
SHA1

5d329227cb51365c98b76fa301c7491064e37824
SHA256

27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20
SHA512

1463b8b98848cb10d72e654ed2f872fedb9ae4fe394c1974d328c04b552937fcf8d4e33bf37fc324e726cff8e9ee3486b5bfc69d6edbb7199522736d3de11092
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKA:xPd4n/M+WLcilrpgGH/GwY87mVmIXQ

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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe

Executes dropped EXE 2 IoCs

pid	Process
4696	wn2ra4ohzdr.exe
2676	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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4696 set thread context of 2676	4696	wn2ra4ohzdr.exe	88

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	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.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
2676	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5284 wrote to memory of 4696	5284	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe	87
PID 5284 wrote to memory of 4696	5284	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe	87
PID 5284 wrote to memory of 4696	5284	27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe	87
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88
PID 4696 wrote to memory of 2676	4696	wn2ra4ohzdr.exe	88

C:\Users\Admin\AppData\Local\Temp\27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe
"C:\Users\Admin\AppData\Local\Temp\27f2cdcc8ecc897dfe40d5af2b4122fc9a40843d60a0506a4a2d5044650a5f20.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5284
- 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:4696
- - 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:2676

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
135KB

MD5
3056f3110303bcf301b80cde3761acaa

SHA1
9ac52326b62654e765ae561f661074e6ff553512

SHA256
3e857ff2e61acd3897a9fd755675ced6a859b2c3e07f79ea94a4124872f42355

SHA512
3c9b18ec8aaacd3d922f4e9e05478c308ffaffffdbd7054828ecc1d64944dcd872f7473445344dc68ca3241125ff814328977bd9f537c8535feb8e9ec80c8abb

Download Submit
memory/2676-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2676-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4696-23-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/4696-21-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/4696-35-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/4696-39-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/5284-0-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/5284-22-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/5284-20-0x000000007491E000-0x000000007491F000-memory.dmp

Filesize
4KB

Download
memory/5284-6-0x0000000004E50000-0x0000000004E70000-memory.dmp

Filesize
128KB

Download
memory/5284-4-0x0000000074910000-0x00000000750C0000-memory.dmp

Filesize
7.7MB

Download
memory/5284-5-0x0000000004AD0000-0x0000000004ADA000-memory.dmp

Filesize
40KB

Download
memory/5284-3-0x0000000004B40000-0x0000000004BD2000-memory.dmp

Filesize
584KB

Download
memory/5284-2-0x0000000005050000-0x00000000055F4000-memory.dmp

Filesize
5.6MB

Download
memory/5284-1-0x00000000000A0000-0x00000000000C8000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads