remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
149s
max time network
150s
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

27.exe
Size

469KB
MD5

50762a7fb96e6cc6d9d7dac5e72b0420
SHA1

c25ad257cc7e811df3631b2513d2c4d99841178e
SHA256

3f3da8c743e76ab61e561a0e11f7da247efa0ec3794ade5104b9a8e075959469
SHA512

2465ba858f4690cccab322f67c89f0bc3bc34697c4b3c9d51ffa35218db61a6ddb29c4faa04213d40e25c01a86671d4b1bafca40198d96d8d8a36c6c72e60152
SSDEEP

12288:Omnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSSn9:2iLJbpI7I2WhQqZ7S9

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-K72SVJ
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	27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	27.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	27.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
3560	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
2096	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	scvhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	27.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	27.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	scvhost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2096 set thread context of 3884	2096	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	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	27.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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	27.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
440	reg.exe
5092	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2096	scvhost.exe
2096	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2096	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 2896	3080	27.exe	85
PID 3080 wrote to memory of 2896	3080	27.exe	85
PID 3080 wrote to memory of 2896	3080	27.exe	85
PID 2896 wrote to memory of 440	2896	cmd.exe	87
PID 2896 wrote to memory of 440	2896	cmd.exe	87
PID 2896 wrote to memory of 440	2896	cmd.exe	87
PID 3080 wrote to memory of 3560	3080	27.exe	89
PID 3080 wrote to memory of 3560	3080	27.exe	89
PID 3080 wrote to memory of 3560	3080	27.exe	89
PID 3560 wrote to memory of 3088	3560	WScript.exe	91
PID 3560 wrote to memory of 3088	3560	WScript.exe	91
PID 3560 wrote to memory of 3088	3560	WScript.exe	91
PID 3088 wrote to memory of 2096	3088	cmd.exe	93
PID 3088 wrote to memory of 2096	3088	cmd.exe	93
PID 3088 wrote to memory of 2096	3088	cmd.exe	93
PID 2096 wrote to memory of 2472	2096	scvhost.exe	94
PID 2096 wrote to memory of 2472	2096	scvhost.exe	94
PID 2096 wrote to memory of 2472	2096	scvhost.exe	94
PID 2096 wrote to memory of 3884	2096	scvhost.exe	96
PID 2096 wrote to memory of 3884	2096	scvhost.exe	96
PID 2096 wrote to memory of 3884	2096	scvhost.exe	96
PID 2096 wrote to memory of 3884	2096	scvhost.exe	96
PID 2472 wrote to memory of 5092	2472	cmd.exe	97
PID 2472 wrote to memory of 5092	2472	cmd.exe	97
PID 2472 wrote to memory of 5092	2472	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\27.exe
"C:\Users\Admin\AppData\Local\Temp\27.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:3080
- 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:2896
- - 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:440
- 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:3560
- - 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:3088
  - - 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:2096
    - - 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:2472
      - 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:5092
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:3884

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
50762a7fb96e6cc6d9d7dac5e72b0420

SHA1
c25ad257cc7e811df3631b2513d2c4d99841178e

SHA256
3f3da8c743e76ab61e561a0e11f7da247efa0ec3794ade5104b9a8e075959469

SHA512
2465ba858f4690cccab322f67c89f0bc3bc34697c4b3c9d51ffa35218db61a6ddb29c4faa04213d40e25c01a86671d4b1bafca40198d96d8d8a36c6c72e60152

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

Filesize
502B

MD5
9761fedb83437ae50b2841319be4bd32

SHA1
416d8520c6a364ae3e9d29f46c18e44ab2382ffb

SHA256
2a8a32e4ac680dd89c519a9949e4d85355e07c66330070cc0e27b3bc7a00648c

SHA512
782665b227f290d8fb33bc6d01b1b38cd549b5c4504cc68f1664a2011f76c3d66733db83d087c92f562514e5f3a3403438f94906a167a632b76457a0fe0e8d88

Download Submit
memory/3884-9-0x0000000001350000-0x00000000013CF000-memory.dmp

Filesize
508KB

Download
memory/3884-10-0x0000000001350000-0x00000000013CF000-memory.dmp

Filesize
508KB

Download