remcos | 1193157e2a338dbe8d057b125d36fffd2c05be694c1bfdaaf49d52e30bd08ebd

Analysis

max time kernel
148s
max time network
156s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
11/03/2025, 16:14

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General

Target
coderoom-main/thawdtyh.exe
Size 486KB
Sample250311-tp2gvsxpv2
SHA256 78cc96452121dc657a87c79561272f3669f781d24265a7a2ab853a5670fff80d
MD5 cf8c5debe04e96be1a022ce0796d868b
SHA1 f91900f49ea42776bcbd81f59b656740a01b9cf3
SHA512 4ceb541f8162f370bd2dcedd3a8335cc4f40bb5d4ec8232ece4d0d685c9a1a663f9edfdccbb480b8c13d24dc8fc961da4d31dad1ad538aa6442b339167b732e9
SSDEEP 6144:JIlSCa0RPvRz+n8Qr1D0ZGESuHabmvHOE4mCp6qtydBnP+Y4+3sAORZGFX3Xc6UJ:J200OFp+G0imvHn3Cp6qyBP+YdsvZGC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos new new discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

new new

135.125.189.140:1040

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
uptime.exe
copy_folder
update
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
restarting.dat
keylog_flag
false
keylog_path
%Temp%
mouse_option
false
mutex
ROA35Q-Y3LF93
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

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-1-5-21-80166876-2127584002-2233670790-1000\Control Panel\International\Geo\Nation	thawdtyh.exe

Executes dropped EXE 1 IoCs

pid	Process
1284	uptime.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-80166876-2127584002-2233670790-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROA35Q-Y3LF93 = "\"C:\\Users\\Admin\\AppData\\Roaming\\update\\uptime.exe\""	thawdtyh.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-80166876-2127584002-2233670790-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ROA35Q-Y3LF93 = "\"C:\\Users\\Admin\\AppData\\Roaming\\update\\uptime.exe\""	uptime.exe

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 2 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	uptime.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	thawdtyh.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4552 wrote to memory of 1284	4552	thawdtyh.exe	84
PID 4552 wrote to memory of 1284	4552	thawdtyh.exe	84
PID 4552 wrote to memory of 1284	4552	thawdtyh.exe	84

C:\Users\Admin\AppData\Local\Temp\coderoom-main\thawdtyh.exe
"C:\Users\Admin\AppData\Local\Temp\coderoom-main\thawdtyh.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4552
- C:\Users\Admin\AppData\Roaming\update\uptime.exe
  "C:\Users\Admin\AppData\Roaming\update\uptime.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:1284

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

uptime.exe

Path C:\Users\Admin\AppData\Roaming\update\uptime.exe
Size 486KB
SHA256 78cc96452121dc657a87c79561272f3669f781d24265a7a2ab853a5670fff80d
MD5 cf8c5debe04e96be1a022ce0796d868b
SHA1 f91900f49ea42776bcbd81f59b656740a01b9cf3
SHA512 4ceb541f8162f370bd2dcedd3a8335cc4f40bb5d4ec8232ece4d0d685c9a1a663f9edfdccbb480b8c13d24dc8fc961da4d31dad1ad538aa6442b339167b732e9
SSDEEP 6144:JIlSCa0RPvRz+n8Qr1D0ZGESuHabmvHOE4mCp6qtydBnP+Y4+3sAORZGFX3Xc6UJ:J200OFp+G0imvHn3Cp6qyBP+YdsvZGC
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads