remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
140s
max time network
110s
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

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

12.exe
Size

469KB
MD5

61729e492823f29b36beaff277e18231
SHA1

eeeeeaa271fe8a3b79fc3f9f51c753339526481a
SHA256

00d40219c25ddb2121292d25de682239862b693e78d09a3c542f622b3aaca8e9
SHA512

7809e99417fc114698d75b3bd368d19ed01df2d18db1fc367d86d7e6b1bc9a15eca7afe4fb8a0f3952465f294684f37dd50691cebb996fc1cd532bd129c69d3e
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSCn9:uiLJbpI7I2WhQqZ7C9

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-76OHLW
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	12.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	12.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	12.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
1484	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	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\""	12.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	12.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1596 set thread context of 512	1596	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	12.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-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	12.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
1848	reg.exe
2448	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1596	scvhost.exe
1596	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1596	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 4052	3724	12.exe	84
PID 3724 wrote to memory of 4052	3724	12.exe	84
PID 3724 wrote to memory of 4052	3724	12.exe	84
PID 4052 wrote to memory of 1848	4052	cmd.exe	86
PID 4052 wrote to memory of 1848	4052	cmd.exe	86
PID 4052 wrote to memory of 1848	4052	cmd.exe	86
PID 3724 wrote to memory of 1484	3724	12.exe	87
PID 3724 wrote to memory of 1484	3724	12.exe	87
PID 3724 wrote to memory of 1484	3724	12.exe	87
PID 1484 wrote to memory of 2104	1484	WScript.exe	91
PID 1484 wrote to memory of 2104	1484	WScript.exe	91
PID 1484 wrote to memory of 2104	1484	WScript.exe	91
PID 2104 wrote to memory of 1596	2104	cmd.exe	93
PID 2104 wrote to memory of 1596	2104	cmd.exe	93
PID 2104 wrote to memory of 1596	2104	cmd.exe	93
PID 1596 wrote to memory of 4748	1596	scvhost.exe	94
PID 1596 wrote to memory of 4748	1596	scvhost.exe	94
PID 1596 wrote to memory of 4748	1596	scvhost.exe	94
PID 1596 wrote to memory of 512	1596	scvhost.exe	96
PID 1596 wrote to memory of 512	1596	scvhost.exe	96
PID 1596 wrote to memory of 512	1596	scvhost.exe	96
PID 1596 wrote to memory of 512	1596	scvhost.exe	96
PID 4748 wrote to memory of 2448	4748	cmd.exe	97
PID 4748 wrote to memory of 2448	4748	cmd.exe	97
PID 4748 wrote to memory of 2448	4748	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\12.exe
"C:\Users\Admin\AppData\Local\Temp\12.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:3724
- 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:4052
- - 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:1848
- 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:1484
- - 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:2104
  - - 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:1596
    - - 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:4748
      - 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:2448
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:512

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\files\scvhost.exe

Filesize
469KB

MD5
61729e492823f29b36beaff277e18231

SHA1
eeeeeaa271fe8a3b79fc3f9f51c753339526481a

SHA256
00d40219c25ddb2121292d25de682239862b693e78d09a3c542f622b3aaca8e9

SHA512
7809e99417fc114698d75b3bd368d19ed01df2d18db1fc367d86d7e6b1bc9a15eca7afe4fb8a0f3952465f294684f37dd50691cebb996fc1cd532bd129c69d3e

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

Filesize
502B

MD5
b6c70211b837d7d6cdc8eb917b8c2f87

SHA1
5f687f3533b078ade364d7483088df6b9cd24f26

SHA256
f5951224b0822114699ec51e3e5eb16d3e7184a3cbc55566a963ce85d5ec2000

SHA512
bfdcd4bf7ea48004b2adb17e9db4a3b3ff8f1e50bd779fbf357efff416eda3c85c77394eeda318ed9395a4e0116f3aa3329af2522257b769241c74778fa34e56

Download Submit
memory/512-10-0x0000000000B00000-0x0000000000B7F000-memory.dmp

Filesize
508KB

Download
memory/512-9-0x0000000000B00000-0x0000000000B7F000-memory.dmp

Filesize
508KB

Download