remcos | e63b5f8bfd7ef1d06b57fef57e2704592b003a653d132844abf776e2e0752181

Analysis

max time kernel
116s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 22:01

Sharing

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Reason

Machine shutdown

Report Analysis Logs

General

Target

Solara3.0s.exe
Size

469KB
MD5

1f532632777673e522d5c17cd4aed0c0
SHA1

707964883b3168810be0f977e54c7db09fed3668
SHA256

e63b5f8bfd7ef1d06b57fef57e2704592b003a653d132844abf776e2e0752181
SHA512

f5772edfe378b1f283d449c515dc8d36609a017745b8395968681efc1de7e0a3b9fc0c69b193b15c39ea44b9f1163355861fa5000e2fb1ab3734dc20250576ce
SSDEEP

12288:umnk7iLJbpIpiRL6I2WhSKQ9ZsfZQS2n9:WiLJbpI7I2WhQqZ729

Score

10^/10

remcos remotehost discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

accessories-retrieve.gl.at.ply.gg:13970

accessories-retrieve.gl.at.ply.gg:9999

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Solara2.exe
copy_folder
Health
delete_file
true
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%WinDir%\System32
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
filer32
keylog_path
%WinDir%\System32
mouse_option
false
mutex
Rmc-X97XC1
screenshot_crypt
true
screenshot_flag
true
screenshot_folder
Screenshots
screenshot_path
%WinDir%\System32
screenshot_time
10
startup_value
WindowsHealth
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 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 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\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	Solara3.0s.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara3.0s.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	Solara2.exe

Deletes itself 1 IoCs

pid	Process
2120	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
2372	Solara2.exe

Loads dropped DLL 2 IoCs

pid	Process
2304	cmd.exe
2304	cmd.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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara3.0s.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara3.0s.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara2.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Screenshots\time_20240917_220201.dat	iexplore.exe
File opened for modification	C:\Windows\SysWOW64\filer32\logs.dat	iexplore.exe
File created	C:\Windows\SysWOW64\filer32\logs.dat	iexplore.exe
File created	C:\Windows\SysWOW64\Health\Solara2.exe	Solara3.0s.exe
File opened for modification	C:\Windows\SysWOW64\Health\Solara2.exe	Solara3.0s.exe
File opened for modification	C:\Windows\SysWOW64\Health	Solara3.0s.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2372 set thread context of 2812	2372	Solara2.exe	37

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 11 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	Solara2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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	Solara3.0s.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	WScript.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
2504	reg.exe
1660	reg.exe
1324	reg.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2812	iexplore.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2372	Solara2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2812	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2812	iexplore.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 3060	1840	Solara3.0s.exe	29
PID 1840 wrote to memory of 3060	1840	Solara3.0s.exe	29
PID 1840 wrote to memory of 3060	1840	Solara3.0s.exe	29
PID 1840 wrote to memory of 3060	1840	Solara3.0s.exe	29
PID 3060 wrote to memory of 2504	3060	cmd.exe	31
PID 3060 wrote to memory of 2504	3060	cmd.exe	31
PID 3060 wrote to memory of 2504	3060	cmd.exe	31
PID 3060 wrote to memory of 2504	3060	cmd.exe	31
PID 1840 wrote to memory of 2120	1840	Solara3.0s.exe	32
PID 1840 wrote to memory of 2120	1840	Solara3.0s.exe	32
PID 1840 wrote to memory of 2120	1840	Solara3.0s.exe	32
PID 1840 wrote to memory of 2120	1840	Solara3.0s.exe	32
PID 2120 wrote to memory of 2304	2120	WScript.exe	33
PID 2120 wrote to memory of 2304	2120	WScript.exe	33
PID 2120 wrote to memory of 2304	2120	WScript.exe	33
PID 2120 wrote to memory of 2304	2120	WScript.exe	33
PID 2304 wrote to memory of 2372	2304	cmd.exe	35
PID 2304 wrote to memory of 2372	2304	cmd.exe	35
PID 2304 wrote to memory of 2372	2304	cmd.exe	35
PID 2304 wrote to memory of 2372	2304	cmd.exe	35
PID 2372 wrote to memory of 2808	2372	Solara2.exe	36
PID 2372 wrote to memory of 2808	2372	Solara2.exe	36
PID 2372 wrote to memory of 2808	2372	Solara2.exe	36
PID 2372 wrote to memory of 2808	2372	Solara2.exe	36
PID 2372 wrote to memory of 2812	2372	Solara2.exe	37
PID 2372 wrote to memory of 2812	2372	Solara2.exe	37
PID 2372 wrote to memory of 2812	2372	Solara2.exe	37
PID 2372 wrote to memory of 2812	2372	Solara2.exe	37
PID 2372 wrote to memory of 2812	2372	Solara2.exe	37
PID 2812 wrote to memory of 2876	2812	iexplore.exe	39
PID 2812 wrote to memory of 2876	2812	iexplore.exe	39
PID 2812 wrote to memory of 2876	2812	iexplore.exe	39
PID 2812 wrote to memory of 2876	2812	iexplore.exe	39
PID 2808 wrote to memory of 1660	2808	cmd.exe	41
PID 2808 wrote to memory of 1660	2808	cmd.exe	41
PID 2808 wrote to memory of 1660	2808	cmd.exe	41
PID 2808 wrote to memory of 1660	2808	cmd.exe	41
PID 2876 wrote to memory of 1324	2876	cmd.exe	42
PID 2876 wrote to memory of 1324	2876	cmd.exe	42
PID 2876 wrote to memory of 1324	2876	cmd.exe	42
PID 2876 wrote to memory of 1324	2876	cmd.exe	42

C:\Users\Admin\AppData\Local\Temp\Solara3.0s.exe
"C:\Users\Admin\AppData\Local\Temp\Solara3.0s.exe"
1⤵
- Adds policy Run key to start application
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1840
- 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:3060
- - 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:2504
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Windows\SysWOW64\Health\Solara2.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2304
  - - C:\Windows\SysWOW64\Health\Solara2.exe
      C:\Windows\SysWOW64\Health\Solara2.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: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:2372
    - - 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:2808
      - 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:1660
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2812
      - 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
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2876
        
        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
        7⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:1324

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2276

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:328

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
530B

MD5
9d64cc6c95afcee920c8622263d8fb81

SHA1
94704b00e785f117cba04b460d8b095ec2438c50

SHA256
bbaa62e42e70a9b6634434666cb2eb6a8440e7c14ef8ccba3a38da6df55ce991

SHA512
6c779cb6189aafa69d9f7a8d00b90c871b68fb0e10ca867f06d0afb6ccfbef0f4fc7c8ea07ee8523209751dc5cfa865fb7d6a7dcd3a27d473193615b57a7fde8

Download Submit
C:\Windows\SysWOW64\filer32\logs.dat

Filesize
184B

MD5
4de946bce00a33d8aa36f60b5607a8cb

SHA1
502cb49c189ba60063a9f5be15fd8500ab5100a7

SHA256
e7a5837430a5a02cdd2408aea018ac9387a0d000e17bcded469f189523a06432

SHA512
6689a34b34ff4ba28d999db7800bb25ff8f7d980f2704cd6273a301de182e8e775252246670a85585985e5b113fffc4121393896303bb4a7fdf58ae890105a75

Download Submit
\Windows\SysWOW64\Health\Solara2.exe

Filesize
469KB

MD5
1f532632777673e522d5c17cd4aed0c0

SHA1
707964883b3168810be0f977e54c7db09fed3668

SHA256
e63b5f8bfd7ef1d06b57fef57e2704592b003a653d132844abf776e2e0752181

SHA512
f5772edfe378b1f283d449c515dc8d36609a017745b8395968681efc1de7e0a3b9fc0c69b193b15c39ea44b9f1163355861fa5000e2fb1ab3734dc20250576ce

Download Submit
memory/2812-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-11-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-12-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-17-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-16-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-13-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-19-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-22-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-20-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-21-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-24-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-26-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-25-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-27-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-28-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-31-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-32-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-35-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-36-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-37-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-38-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-39-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-41-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-44-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-43-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-46-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-47-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-48-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-49-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-52-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-53-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-58-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-59-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-61-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-60-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-64-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-65-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-67-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-70-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-69-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-71-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-72-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-74-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-76-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-77-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-81-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-80-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-83-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-84-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-87-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download
memory/2812-88-0x0000000000230000-0x00000000002AF000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads