remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
139s
max time network
125s
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, 09:03

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General

Target

11.exe
Size

469KB
MD5

27ecf512608cb5af60fecfe1704dd92d
SHA1

9c3e290eeaee2b95a3258162361e3f36e94c5f85
SHA256

383d49aa25471eaca850e06e028ee6713b8b6d6353474eda2fca6bb7e979b3d7
SHA512

c0f7002f0058a27fe04fc290b5578e7b417ea1830e425eb547b3f4813e1bcec1f6191dd4476ab4d5f7f4693b4ab1a3427679cb0a1bb4fd08414400e7d8b09fdc
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSPn9:uiLJbpI7I2WhQqZ7P9

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-LZIREX
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\""	11.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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	11.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	11.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
4792	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
1432	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	11.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	11.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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 1432 set thread context of 4416	1432	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	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	11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	11.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
3580	reg.exe
1292	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1432	scvhost.exe
1432	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1432	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 3708	3764	11.exe	86
PID 3764 wrote to memory of 3708	3764	11.exe	86
PID 3764 wrote to memory of 3708	3764	11.exe	86
PID 3708 wrote to memory of 1292	3708	cmd.exe	89
PID 3708 wrote to memory of 1292	3708	cmd.exe	89
PID 3708 wrote to memory of 1292	3708	cmd.exe	89
PID 3764 wrote to memory of 4792	3764	11.exe	90
PID 3764 wrote to memory of 4792	3764	11.exe	90
PID 3764 wrote to memory of 4792	3764	11.exe	90
PID 4792 wrote to memory of 3996	4792	WScript.exe	91
PID 4792 wrote to memory of 3996	4792	WScript.exe	91
PID 4792 wrote to memory of 3996	4792	WScript.exe	91
PID 3996 wrote to memory of 1432	3996	cmd.exe	93
PID 3996 wrote to memory of 1432	3996	cmd.exe	93
PID 3996 wrote to memory of 1432	3996	cmd.exe	93
PID 1432 wrote to memory of 4644	1432	scvhost.exe	94
PID 1432 wrote to memory of 4644	1432	scvhost.exe	94
PID 1432 wrote to memory of 4644	1432	scvhost.exe	94
PID 4644 wrote to memory of 3580	4644	cmd.exe	97
PID 4644 wrote to memory of 3580	4644	cmd.exe	97
PID 4644 wrote to memory of 3580	4644	cmd.exe	97
PID 1432 wrote to memory of 4416	1432	scvhost.exe	96
PID 1432 wrote to memory of 4416	1432	scvhost.exe	96
PID 1432 wrote to memory of 4416	1432	scvhost.exe	96
PID 1432 wrote to memory of 4416	1432	scvhost.exe	96

C:\Users\Admin\AppData\Local\Temp\11.exe
"C:\Users\Admin\AppData\Local\Temp\11.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:3764
- 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:3708
- - 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:1292
- 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:4792
- - 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:3996
  - - 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:1432
    - - 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:4644
      - 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:3580
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:4416

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
27ecf512608cb5af60fecfe1704dd92d

SHA1
9c3e290eeaee2b95a3258162361e3f36e94c5f85

SHA256
383d49aa25471eaca850e06e028ee6713b8b6d6353474eda2fca6bb7e979b3d7

SHA512
c0f7002f0058a27fe04fc290b5578e7b417ea1830e425eb547b3f4813e1bcec1f6191dd4476ab4d5f7f4693b4ab1a3427679cb0a1bb4fd08414400e7d8b09fdc

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

Filesize
502B

MD5
b0e1c1b0c9514573c9f7d671cc74e51f

SHA1
fd4a8d6abcf0b7da810f8c7bba4096ac89dfddfa

SHA256
c3c918ff81b4cd4130811b7c1c9bc6f0496268b415c59228c2e1360b3dccc1f2

SHA512
fd5f06eefe1bc63750366976c09ce7fa67d38e4074a0c33952d4bd7d5dc71c2649662271efac7d6a018c6b3afa0b608db562bf9a32fa3f7f5f688a37d91e1898

Download Submit
memory/4416-10-0x0000000001420000-0x000000000149F000-memory.dmp

Filesize
508KB

Download
memory/4416-9-0x0000000001420000-0x000000000149F000-memory.dmp

Filesize
508KB

Download