remcos | 0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d

Analysis

max time kernel
150s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09/11/2024, 09:24

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General

Target
0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Size 466KB
Sample241109-ldke7s1max
SHA256 0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d
MD5 23350a33531966fa6a0cf02f9c27f053
SHA1 1f53024c59b6b65fcf032bd5bb69cedbdcc67dfa
SHA512 b6f8bbbbc5bf9b4d982bdab369513b5667835aa6660678917c259b599d563c7ad2d8f5233e4c62d962523393d8faa51087e3696fa72cabbde81ec1a39d3adfac
SSDEEP 12288:JuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDS57G+DY:809AfNIEYsunZvZ19ZiGs
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos r2411 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

R2411

cc.shinrarigs.com:2404
45.32.129.178:2404

Attributes

audio_folder
MicRecords (em inglês)
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
BraveSharedUpdater.exe
copy_folder
BraveShared
delete_file
true
hide_file
true
hide_keylog_file
true
install_flag
true
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
BravePrivate
mouse_option
false
mutex
Brv-Q0EV0O
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Capturas de tela
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

UAC bypass 3 TTPs 3 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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Adds policy Run key to start application 2 TTPs 6 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	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	iexplore.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	BraveSharedUpdater.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	BraveSharedUpdater.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe

Deletes itself 1 IoCs

pid	Process
2860	iexplore.exe

Executes dropped EXE 1 IoCs

pid	Process
3064	BraveSharedUpdater.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	iexplore.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	BraveSharedUpdater.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Brv-Q0EV0O = "\"C:\\ProgramData\\BraveShared\\BraveSharedUpdater.exe\""	BraveSharedUpdater.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3064 set thread context of 2860	3064	BraveSharedUpdater.exe	90
PID 2860 set thread context of 3076	2860	iexplore.exe	94

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 10 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	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BraveSharedUpdater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
4340	reg.exe
5056	reg.exe
400	reg.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3064	BraveSharedUpdater.exe
3064	BraveSharedUpdater.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3064	BraveSharedUpdater.exe
2860	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2860	iexplore.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 2412	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	83
PID 4980 wrote to memory of 2412	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	83
PID 4980 wrote to memory of 2412	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	83
PID 2412 wrote to memory of 400	2412	cmd.exe	85
PID 2412 wrote to memory of 400	2412	cmd.exe	85
PID 2412 wrote to memory of 400	2412	cmd.exe	85
PID 4980 wrote to memory of 3064	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	88
PID 4980 wrote to memory of 3064	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	88
PID 4980 wrote to memory of 3064	4980	0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe	88
PID 3064 wrote to memory of 628	3064	BraveSharedUpdater.exe	89
PID 3064 wrote to memory of 628	3064	BraveSharedUpdater.exe	89
PID 3064 wrote to memory of 628	3064	BraveSharedUpdater.exe	89
PID 3064 wrote to memory of 2860	3064	BraveSharedUpdater.exe	90
PID 3064 wrote to memory of 2860	3064	BraveSharedUpdater.exe	90
PID 3064 wrote to memory of 2860	3064	BraveSharedUpdater.exe	90
PID 3064 wrote to memory of 2860	3064	BraveSharedUpdater.exe	90
PID 2860 wrote to memory of 3592	2860	iexplore.exe	92
PID 2860 wrote to memory of 3592	2860	iexplore.exe	92
PID 2860 wrote to memory of 3592	2860	iexplore.exe	92
PID 2860 wrote to memory of 3076	2860	iexplore.exe	94
PID 2860 wrote to memory of 3076	2860	iexplore.exe	94
PID 2860 wrote to memory of 3076	2860	iexplore.exe	94
PID 2860 wrote to memory of 3076	2860	iexplore.exe	94
PID 628 wrote to memory of 5056	628	cmd.exe	95
PID 628 wrote to memory of 5056	628	cmd.exe	95
PID 628 wrote to memory of 5056	628	cmd.exe	95
PID 3592 wrote to memory of 4340	3592	cmd.exe	96
PID 3592 wrote to memory of 4340	3592	cmd.exe	96
PID 3592 wrote to memory of 4340	3592	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.exe
"C:\Users\Admin\AppData\Local\Temp\0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d.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:4980
- 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:2412
- - 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:400
- C:\ProgramData\BraveShared\BraveSharedUpdater.exe
  "C:\ProgramData\BraveShared\BraveSharedUpdater.exe"
  2⤵
  - 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:3064
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:628
  - - 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
      4⤵
      UAC bypass
      System Location Discovery: System Language Discovery
      Modifies registry key
      PID:5056
- - \??\c:\program files (x86)\internet explorer\iexplore.exe
    "c:\program files (x86)\internet explorer\iexplore.exe"
    3⤵
    - Adds policy Run key to start application
    - Deletes itself
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2860
  - - 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
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3592
    - - 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
        5⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:4340
  - - C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:3076

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

BraveSharedUpdater.exe

Path C:\ProgramData\BraveShared\BraveSharedUpdater.exe
Size 466KB
SHA256 0d4bf4e1a47fa2cfdb5cdc23d8a2b1552c1d82c307e1eec95297e62a478d2f2d
MD5 23350a33531966fa6a0cf02f9c27f053
SHA1 1f53024c59b6b65fcf032bd5bb69cedbdcc67dfa
SHA512 b6f8bbbbc5bf9b4d982bdab369513b5667835aa6660678917c259b599d563c7ad2d8f5233e4c62d962523393d8faa51087e3696fa72cabbde81ec1a39d3adfac
SSDEEP 12288:JuD09AUkNIGBYYv4eK13x13nZHSRVMf139F5wIB7+IwtHwBtVxbesvZDS57G+DY:809AfNIEYsunZvZ19ZiGs
MD5 SHA1 SHA512 SSDEEP

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memory/2860-75-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-95-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-62-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-98-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-97-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-72-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-69-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-66-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-63-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-74-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-73-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-60-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-61-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-88-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-76-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-89-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-90-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-91-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-92-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-93-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-94-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-85-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/2860-96-0x0000000000750000-0x00000000007CB000-memory.dmp

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memory/3076-71-0x0000000000810000-0x000000000088B000-memory.dmp

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memory/3076-70-0x0000000000810000-0x000000000088B000-memory.dmp

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