remcos | 7e14eac3878e56172746c4ce61a41938ee6ddb571721682db462d31e8810a0c9

Analysis

max time kernel
150s
max time network
157s
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

19.exe
Size

469KB
MD5

acfb691b2877f1ecb639bb3e7c5e5493
SHA1

d9883a6b7ff1a43f94c5de0e1a80af7d36a39e73
SHA256

b81478ef251a0cb9a8d97b52f5137a41a550ffd6083c6203767f2cc5567e0cf4
SHA512

af61993d8e20d9a1306ee76a330d9bb7ea0f21adb258dfc987647649fc4ad514b0bb48a12b85a56975c2e30f55994b2544375978f60f2894958e1c04bce0fadd
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSLn9:uiLJbpI7I2WhQqZ7L9

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-HTAAL5
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	19.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	19.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	19.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	WScript.exe

Deletes itself 1 IoCs

pid	Process
1752	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
4116	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	19.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\scvhost = "\"C:\\ProgramData\\files\\scvhost.exe\""	19.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\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 4116 set thread context of 5112	4116	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	19.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-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	19.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
2676	reg.exe
3828	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4116	scvhost.exe
4116	scvhost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4116	scvhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 2372	4796	19.exe	86
PID 4796 wrote to memory of 2372	4796	19.exe	86
PID 4796 wrote to memory of 2372	4796	19.exe	86
PID 2372 wrote to memory of 2676	2372	cmd.exe	88
PID 2372 wrote to memory of 2676	2372	cmd.exe	88
PID 2372 wrote to memory of 2676	2372	cmd.exe	88
PID 4796 wrote to memory of 1752	4796	19.exe	89
PID 4796 wrote to memory of 1752	4796	19.exe	89
PID 4796 wrote to memory of 1752	4796	19.exe	89
PID 1752 wrote to memory of 2460	1752	WScript.exe	92
PID 1752 wrote to memory of 2460	1752	WScript.exe	92
PID 1752 wrote to memory of 2460	1752	WScript.exe	92
PID 2460 wrote to memory of 4116	2460	cmd.exe	94
PID 2460 wrote to memory of 4116	2460	cmd.exe	94
PID 2460 wrote to memory of 4116	2460	cmd.exe	94
PID 4116 wrote to memory of 4492	4116	scvhost.exe	95
PID 4116 wrote to memory of 4492	4116	scvhost.exe	95
PID 4116 wrote to memory of 4492	4116	scvhost.exe	95
PID 4116 wrote to memory of 5112	4116	scvhost.exe	96
PID 4116 wrote to memory of 5112	4116	scvhost.exe	96
PID 4116 wrote to memory of 5112	4116	scvhost.exe	96
PID 4116 wrote to memory of 5112	4116	scvhost.exe	96
PID 4492 wrote to memory of 3828	4492	cmd.exe	98
PID 4492 wrote to memory of 3828	4492	cmd.exe	98
PID 4492 wrote to memory of 3828	4492	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\19.exe
"C:\Users\Admin\AppData\Local\Temp\19.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:4796
- 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:2372
- - 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:2676
- 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:1752
- - 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:2460
  - - 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:4116
    - - 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:4492
      - 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:3828
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:5112

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
acfb691b2877f1ecb639bb3e7c5e5493

SHA1
d9883a6b7ff1a43f94c5de0e1a80af7d36a39e73

SHA256
b81478ef251a0cb9a8d97b52f5137a41a550ffd6083c6203767f2cc5567e0cf4

SHA512
af61993d8e20d9a1306ee76a330d9bb7ea0f21adb258dfc987647649fc4ad514b0bb48a12b85a56975c2e30f55994b2544375978f60f2894958e1c04bce0fadd

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

Filesize
502B

MD5
a5264166e290666dd4076248f77f6ab1

SHA1
78c0c6d700eedbaa674c996d776692571e77b429

SHA256
86bca34e6359858b8b0c49ad875779399a31c4a4c906ecf48e5834af7cb1793d

SHA512
c1f743f20b0ee07ffd6efc1cfc37ac715f9a5a80cd677e88f90be22cc9b77e41ed73393c4df4f175312017c3231c0877265d02be0a76a14e0ccc4b4065797ff6

Download Submit
memory/5112-9-0x0000000000F30000-0x0000000000FAF000-memory.dmp

Filesize
508KB

Download
memory/5112-10-0x0000000000F30000-0x0000000000FAF000-memory.dmp

Filesize
508KB

Download