remcos | 5cadbdb3c936e6e75c4314aa7c9b815f3507135957bac00dc95ba5a5a61abcb8

Analysis

max time kernel
14s
max time network
18s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 21:45

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General

Target

Solara3.0.exe
Size

469KB
MD5

78cc68b05b96757337bd5cf262c00b7a
SHA1

f3ecae5e0edbf728092e49f28609610c3fefec46
SHA256

5cadbdb3c936e6e75c4314aa7c9b815f3507135957bac00dc95ba5a5a61abcb8
SHA512

b1fa4d3621adeb59934f9c89c066510d6b04d823c23180922222e6a68796515558af763c99ca5ca8d4467896dd6546aabb3d4d682e69f53dabeb49cfa69a2b93
SSDEEP

12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSTn9:uiLJbpI7I2WhQqZ7T9

Score

10^/10

remcos remotehost discovery evasion persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

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

192.168.1.56:13970

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-VK27G6
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 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	Solara3.0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara3.0.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	Solara2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara2.exe

Deletes itself 1 IoCs

pid	Process
2820	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
2796	Solara2.exe

Loads dropped DLL 2 IoCs

pid	Process
2968	cmd.exe
2968	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\""	Solara2.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara2.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\""	Solara3.0.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsHealth = "\"C:\\Windows\\SysWOW64\\Health\\Solara2.exe\""	Solara3.0.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Health\Solara2.exe	Solara3.0.exe
File opened for modification	C:\Windows\SysWOW64\Health	Solara3.0.exe
File created	C:\Windows\SysWOW64\Health\Solara2.exe	Solara3.0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 3044	2796	Solara2.exe	39

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

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
2064	reg.exe
2840	reg.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2796	Solara2.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2168	2524	Solara3.0.exe	30
PID 2524 wrote to memory of 2168	2524	Solara3.0.exe	30
PID 2524 wrote to memory of 2168	2524	Solara3.0.exe	30
PID 2524 wrote to memory of 2168	2524	Solara3.0.exe	30
PID 2168 wrote to memory of 2064	2168	cmd.exe	32
PID 2168 wrote to memory of 2064	2168	cmd.exe	32
PID 2168 wrote to memory of 2064	2168	cmd.exe	32
PID 2168 wrote to memory of 2064	2168	cmd.exe	32
PID 2524 wrote to memory of 2820	2524	Solara3.0.exe	33
PID 2524 wrote to memory of 2820	2524	Solara3.0.exe	33
PID 2524 wrote to memory of 2820	2524	Solara3.0.exe	33
PID 2524 wrote to memory of 2820	2524	Solara3.0.exe	33
PID 2820 wrote to memory of 2968	2820	WScript.exe	34
PID 2820 wrote to memory of 2968	2820	WScript.exe	34
PID 2820 wrote to memory of 2968	2820	WScript.exe	34
PID 2820 wrote to memory of 2968	2820	WScript.exe	34
PID 2968 wrote to memory of 2796	2968	cmd.exe	36
PID 2968 wrote to memory of 2796	2968	cmd.exe	36
PID 2968 wrote to memory of 2796	2968	cmd.exe	36
PID 2968 wrote to memory of 2796	2968	cmd.exe	36
PID 2796 wrote to memory of 2976	2796	Solara2.exe	37
PID 2796 wrote to memory of 2976	2796	Solara2.exe	37
PID 2796 wrote to memory of 2976	2796	Solara2.exe	37
PID 2796 wrote to memory of 2976	2796	Solara2.exe	37
PID 2796 wrote to memory of 3044	2796	Solara2.exe	39
PID 2796 wrote to memory of 3044	2796	Solara2.exe	39
PID 2796 wrote to memory of 3044	2796	Solara2.exe	39
PID 2796 wrote to memory of 3044	2796	Solara2.exe	39
PID 2796 wrote to memory of 3044	2796	Solara2.exe	39
PID 2976 wrote to memory of 2840	2976	cmd.exe	40
PID 2976 wrote to memory of 2840	2976	cmd.exe	40
PID 2976 wrote to memory of 2840	2976	cmd.exe	40
PID 2976 wrote to memory of 2840	2976	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\Solara3.0.exe
"C:\Users\Admin\AppData\Local\Temp\Solara3.0.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:2524
- 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:2168
- - 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:2064
- 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:2820
- - 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:2968
  - - 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:2796
    - - 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:2976
      - 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:2840
    - - \??\c:\program files (x86)\internet explorer\iexplore.exe
        
        "c:\program files (x86)\internet explorer\iexplore.exe"
        5⤵
        
        PID:3044

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

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Downloads

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

Filesize
528B

MD5
9fdc1fab4ac329ed44834a7107e01586

SHA1
31e1fdb32b2362bd4c6c763447921b79ff8356e7

SHA256
e451e71bcf8cfa2f5d0587427cc1d8de37f0a463504dd6c95be3fde0a70bfb94

SHA512
3b4d7958ec9757cd4a0e5cea025f0fb9419c058917d4772df06b271de5c48a544cf00f49dbf5d05ad7578ee97267ea4da5f83bcee223e8c01db86996fa9c3df6

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

Filesize
469KB

MD5
78cc68b05b96757337bd5cf262c00b7a

SHA1
f3ecae5e0edbf728092e49f28609610c3fefec46

SHA256
5cadbdb3c936e6e75c4314aa7c9b815f3507135957bac00dc95ba5a5a61abcb8

SHA512
b1fa4d3621adeb59934f9c89c066510d6b04d823c23180922222e6a68796515558af763c99ca5ca8d4467896dd6546aabb3d4d682e69f53dabeb49cfa69a2b93

Download Submit
memory/3044-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3044-12-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download
memory/3044-11-0x0000000000080000-0x00000000000FF000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads