remcos | d0a2f34767b3da4c50e2897bb5927b36552f949e8809bf865dc006fcb82c923f

General

Target

c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe
Size

92KB
MD5

de9d4c9c1009d24b1fb38205a5277beb
SHA1

46f4afb0f5763067fa52060fbcb387e3951fb4bf
SHA256

c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a
SHA512

222f003d201fdc5fb53df1d40cb7bcfb9c5c6a831a4347ca67b8cf25a015a9189573b59f270e2212877ea3197506cb80d49385611a988cb160f15032d7187474
SSDEEP

1536:IhhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP6vrv:OhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+s

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

tobi12345.hopto.org:50501

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
win32.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
remcos_xfazsapjhi
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe

Executes dropped EXE 1 IoCs

pid	Process
1324	win32.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\win32.exe\""	win32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\win32.exe\""	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\win32.exe\""	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\win32.exe\""	win32.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 4 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	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3880	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3880	PING.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1324	win32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 4428	2032	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe	84
PID 2032 wrote to memory of 4428	2032	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe	84
PID 2032 wrote to memory of 4428	2032	c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe	84
PID 4428 wrote to memory of 3880	4428	cmd.exe	86
PID 4428 wrote to memory of 3880	4428	cmd.exe	86
PID 4428 wrote to memory of 3880	4428	cmd.exe	86
PID 4428 wrote to memory of 1324	4428	cmd.exe	87
PID 4428 wrote to memory of 1324	4428	cmd.exe	87
PID 4428 wrote to memory of 1324	4428	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe
"C:\Users\Admin\AppData\Local\Temp\c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4428
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3880
- - C:\Users\Admin\AppData\Roaming\remcos\win32.exe
    "C:\Users\Admin\AppData\Roaming\remcos\win32.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
98B

MD5
439c16a11c6e6dbbd7916dac62cf877d

SHA1
a86ed4301e82487fc590f64c3075a122e6f93235

SHA256
3ec6d79a891354eae53a13236ab2db1e058dd9af3af90b150b59ad069f5ff7c1

SHA512
3ae50584e41c1884bb76d313e47c5423abfce62870993e0061467675d6a38f99cda80bf4bb82283e4552ea04906fcf2c87a6d158999d1592d6e8691078508999

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C:\Users\Admin\AppData\Roaming\remcos\win32.exe

Filesize
92KB

MD5
de9d4c9c1009d24b1fb38205a5277beb

SHA1
46f4afb0f5763067fa52060fbcb387e3951fb4bf

SHA256
c64129ee795961963a0df968f6f460704f8bbe0622bea2e8958109a67e1c471a

SHA512
222f003d201fdc5fb53df1d40cb7bcfb9c5c6a831a4347ca67b8cf25a015a9189573b59f270e2212877ea3197506cb80d49385611a988cb160f15032d7187474

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads