remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/10/2024, 08:59

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General

Target

9.exe
Size

469KB
MD5

29f5cb0a23bce81dd8b3c66047e37cd5
SHA1

4c7a62171bddca7a8605a28f3d611bb77903907c
SHA256

25871f62c403fe5f615c5f04412d0f6d2c60e171d30d16299d3882c7cf87934e
SHA512

ff576dda3d1ec656a5e4796cccfbb08181f2d67665e96c50aa095f1cedf7c337ad07ebfd96a7c70a8d2dfe01728ca235c80cd6c717ad48f9a627d56251edd61f
SSDEEP

12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSen9:WiLJbpI7I2WhQqZ7e9

Score

10^/10

remcos remotehost discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

core-hook.gl.at.ply.gg:7242

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
scvhost.exe
copy_folder
files
delete_file
true
hide_file
true
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-Q8S6Q1
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
scvhost
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

UAC bypass 3 TTPs 2 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Adds policy 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\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	scvhost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	9.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	scvhost.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	9.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
2696	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	scvhost.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\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	9.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	9.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	scvhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	scvhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 4384	4356	scvhost.exe	95

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 8 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scvhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000_Classes\Local Settings	9.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
116	reg.exe
3708	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4356	scvhost.exe
4356	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4356	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3096 wrote to memory of 3640	3096	9.exe	84
PID 3096 wrote to memory of 3640	3096	9.exe	84
PID 3096 wrote to memory of 3640	3096	9.exe	84
PID 3640 wrote to memory of 116	3640	cmd.exe	86
PID 3640 wrote to memory of 116	3640	cmd.exe	86
PID 3640 wrote to memory of 116	3640	cmd.exe	86
PID 3096 wrote to memory of 2696	3096	9.exe	88
PID 3096 wrote to memory of 2696	3096	9.exe	88
PID 3096 wrote to memory of 2696	3096	9.exe	88
PID 2696 wrote to memory of 2572	2696	WScript.exe	91
PID 2696 wrote to memory of 2572	2696	WScript.exe	91
PID 2696 wrote to memory of 2572	2696	WScript.exe	91
PID 2572 wrote to memory of 4356	2572	cmd.exe	93
PID 2572 wrote to memory of 4356	2572	cmd.exe	93
PID 2572 wrote to memory of 4356	2572	cmd.exe	93
PID 4356 wrote to memory of 4284	4356	scvhost.exe	94
PID 4356 wrote to memory of 4284	4356	scvhost.exe	94
PID 4356 wrote to memory of 4284	4356	scvhost.exe	94
PID 4356 wrote to memory of 4384	4356	scvhost.exe	95
PID 4356 wrote to memory of 4384	4356	scvhost.exe	95
PID 4356 wrote to memory of 4384	4356	scvhost.exe	95
PID 4356 wrote to memory of 4384	4356	scvhost.exe	95
PID 4284 wrote to memory of 3708	4284	cmd.exe	97
PID 4284 wrote to memory of 3708	4284	cmd.exe	97
PID 4284 wrote to memory of 3708	4284	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\9.exe
"C:\Users\Admin\AppData\Local\Temp\9.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3096
- C:\Windows\SysWOW64\cmd.exe
  /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3640
- - C:\Windows\SysWOW64\reg.exe
    C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:116
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\ProgramData\files\scvhost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2572
  - - C:\ProgramData\files\scvhost.exe
      C:\ProgramData\files\scvhost.exe
      4⤵
      Adds policy Run key to start application
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:4356
    - - C:\Windows\SysWOW64\cmd.exe
        
        /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4284
      - C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        6⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:3708
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:4384

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

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

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:\ProgramData\files\scvhost.exe

Filesize
469KB

MD5
29f5cb0a23bce81dd8b3c66047e37cd5

SHA1
4c7a62171bddca7a8605a28f3d611bb77903907c

SHA256
25871f62c403fe5f615c5f04412d0f6d2c60e171d30d16299d3882c7cf87934e

SHA512
ff576dda3d1ec656a5e4796cccfbb08181f2d67665e96c50aa095f1cedf7c337ad07ebfd96a7c70a8d2dfe01728ca235c80cd6c717ad48f9a627d56251edd61f

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
500B

MD5
b4a264c27ed297b7cb313d197e51b354

SHA1
c716dce9c775ddee3056284c08a941cb9838b4f6

SHA256
daf81b80e714be194027fe4645018688d234bfc0063f5961df59743a76c6169b

SHA512
dce73c75a48c29bed0ef7069ca968f88e059427535287940bac671992fac6e90226e7d384fd1d95bf8b19e770bd2d1cc0a28075d215040e0da6c01af76620d95

Download Submit
memory/4384-9-0x0000000000B60000-0x0000000000BDF000-memory.dmp

Filesize
508KB

Download
memory/4384-10-0x0000000000B60000-0x0000000000BDF000-memory.dmp

Filesize
508KB

Download