remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
147s
max time network
156s
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

32.exe
Size

469KB
MD5

8e51611964d22c5d098f85e52baf9b71
SHA1

968ea8beef406c4f0c840d93860ce390c582c378
SHA256

3c76e410631be8376d85efe19bd036356409aa3c41b36a84b600d9bdcf343b7a
SHA512

c9fe89f4789cc9e2a69f0051046757f76bb285fd32ff1494fa99069e29da02ad2d2252550237f3e60da04cd2534c39019d0ccb39b2ec8a2e443026a7fa50a98d
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS+n9:uiLJbpI7I2WhQqZ7+9

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-FVLFRG
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	scvhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	32.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
1196	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
3052	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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 3052 set thread context of 4916	3052	scvhost.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 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	32.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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scvhost.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000_Classes\Local Settings	32.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
2524	reg.exe
2344	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3052	scvhost.exe
3052	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3052	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 380 wrote to memory of 2780	380	32.exe	84
PID 380 wrote to memory of 2780	380	32.exe	84
PID 380 wrote to memory of 2780	380	32.exe	84
PID 2780 wrote to memory of 2524	2780	cmd.exe	86
PID 2780 wrote to memory of 2524	2780	cmd.exe	86
PID 2780 wrote to memory of 2524	2780	cmd.exe	86
PID 380 wrote to memory of 1196	380	32.exe	87
PID 380 wrote to memory of 1196	380	32.exe	87
PID 380 wrote to memory of 1196	380	32.exe	87
PID 1196 wrote to memory of 4704	1196	WScript.exe	91
PID 1196 wrote to memory of 4704	1196	WScript.exe	91
PID 1196 wrote to memory of 4704	1196	WScript.exe	91
PID 4704 wrote to memory of 3052	4704	cmd.exe	93
PID 4704 wrote to memory of 3052	4704	cmd.exe	93
PID 4704 wrote to memory of 3052	4704	cmd.exe	93
PID 3052 wrote to memory of 3716	3052	scvhost.exe	94
PID 3052 wrote to memory of 3716	3052	scvhost.exe	94
PID 3052 wrote to memory of 3716	3052	scvhost.exe	94
PID 3052 wrote to memory of 4916	3052	scvhost.exe	96
PID 3052 wrote to memory of 4916	3052	scvhost.exe	96
PID 3052 wrote to memory of 4916	3052	scvhost.exe	96
PID 3052 wrote to memory of 4916	3052	scvhost.exe	96
PID 3716 wrote to memory of 2344	3716	cmd.exe	97
PID 3716 wrote to memory of 2344	3716	cmd.exe	97
PID 3716 wrote to memory of 2344	3716	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\32.exe
"C:\Users\Admin\AppData\Local\Temp\32.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:380
- 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:2780
- - 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:2524
- 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:1196
- - 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:4704
  - - 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:3052
    - - 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:3716
      - 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:2344
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:4916

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
8e51611964d22c5d098f85e52baf9b71

SHA1
968ea8beef406c4f0c840d93860ce390c582c378

SHA256
3c76e410631be8376d85efe19bd036356409aa3c41b36a84b600d9bdcf343b7a

SHA512
c9fe89f4789cc9e2a69f0051046757f76bb285fd32ff1494fa99069e29da02ad2d2252550237f3e60da04cd2534c39019d0ccb39b2ec8a2e443026a7fa50a98d

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

Filesize
502B

MD5
69a55d02ef3eb237a0b12a69677c218c

SHA1
e48ab0f67df138a6b85c7bb1d9852acbac67100f

SHA256
20c007a5abef5d13194735c8de442715fffa2390be55102d1c4bc652b61374fd

SHA512
910d2cf7cc5feaf4b0e96d40acd0574cbddae6f297a1a749f62ec9ad0a582efe8143ffbeda4b3d3c2901a12a122271ef7a7ce080ae1b64718c00b4dc5064660d

Download Submit
memory/4916-9-0x0000000000E20000-0x0000000000E9F000-memory.dmp

Filesize
508KB

Download
memory/4916-10-0x0000000000E20000-0x0000000000E9F000-memory.dmp

Filesize
508KB

Download