remcos | c1411695a46008567ed81c474298a6cade2e743d50019acb46407ed66cb11b0e

Analysis

max time kernel
148s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
06-02-2025 09:58

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General

Target

TaxOrganizer24.exe
Size

1.8MB
MD5

0d5c5d1e67e2005c868b2240746a5d1b
SHA1

6befe34c622a2935bee6efe97e0bc92ceabd1afe
SHA256

6a71daa9db62b37a175a620b7051c9cfda83baa817cf2ce47895e9d3b0d70788
SHA512

e08765509cf36404244756e27ffc2d632433b03374c44d918184c5f9500f1b58322fb4984e4e9e084ff4c0cfbd8bfa38390966c33e4efc6083f00e500247cdef
SSDEEP

49152:L2X7UMQYR9B5Mi5W5xCsfZUIVmT4VTd1lc:L+oMNsr9Jxi

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

bangerr.duckdns.org:1012

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-Z95DP4
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\TaxOrganizer24 = "cmd.exe /C start \"\" /D \"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RootServices\" \"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RootServices\\TaxOrganizer24.exe\""	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3608 set thread context of 2152	3608	TaxOrganizer24.exe	91

Drops file in Windows directory 52 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\IEYJLSCD-20250129-0927a.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libiconv-2.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_6.0.27_(x64)_20250129092248_000_dotnet_runtime_6.0.27_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_6.0.27_(x64)_20250129092248_003_windowsdesktop_runtime_6.0.27_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20250129092327_002_dotnet_host_7.0.16_win_x64.msi.log	TaxOrganizer24.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AdobeSFX.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\dd_NDP472-KB4054530-x86-x64-AllOS-ENU_decompression_log.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\dd_vcredistMSI06FB.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_8.0.2_(x64)_20250129092350_002_dotnet_host_8.0.2_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wct2CA8.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\jusched.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wct8CFD.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wmsetup.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\aria-debug-1204.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\chrome_installer.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\jawshtml.html	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\mapping.csv	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft .NET Framework 4.7.2 Setup_20250129_092209164.html	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_6.0.27_(x64)_20250129092248_002_dotnet_host_6.0.27_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20250129092327_003_windowsdesktop_runtime_7.0.16_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_8.0.2_(x64)_20250129092350_001_dotnet_hostfxr_8.0.2_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\BroadcastMsg_1738142816.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libcurl-4.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libssp-0.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\zlib1.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_8.0.2_(x64)_20250129092350_003_windowsdesktop_runtime_8.0.2_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\vcruntime211.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wct4C22.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libcrypto-1_1-x64.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20250129092327.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20250129092327_000_dotnet_runtime_7.0.16_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_8.0.2_(x64)_20250129092350_000_dotnet_runtime_8.0.2_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\msedge_installer.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\{C16A3FAF-09C9-453B-9874-0F8FD15DA740} - OProcSessId.dat	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\AdobeSFX.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\dd_vcredistUI06FB.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libpcre2-8-0.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_6.0.27_(x64)_20250129092248_001_dotnet_hostfxr_6.0.27_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_7.0.16_(x64)_20250129092327_001_dotnet_hostfxr_7.0.16_win_x64.msi.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\msvcp144.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\TaxOrganizer24.exe	TaxOrganizer24.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\BIT78D9.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\IEYJLSCD-20250129-0927.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wctDF25.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\dd_vcredistMSI0719.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\dd_vcredistUI0719.txt	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\JavaDeployReg.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\wct57DF.tmp	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\libintl-8.dll	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_6.0.27_(x64)_20250129092248.log	TaxOrganizer24.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\Microsoft_Windows_Desktop_Runtime_-_8.0.2_(x64)_20250129092350.log	TaxOrganizer24.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	aspnet_wp.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3608	TaxOrganizer24.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3608 wrote to memory of 2740	3608	TaxOrganizer24.exe	87
PID 3608 wrote to memory of 2740	3608	TaxOrganizer24.exe	87
PID 2740 wrote to memory of 1592	2740	cmd.exe	89
PID 2740 wrote to memory of 1592	2740	cmd.exe	89
PID 1592 wrote to memory of 1028	1592	cmd.exe	90
PID 1592 wrote to memory of 1028	1592	cmd.exe	90
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91
PID 3608 wrote to memory of 2152	3608	TaxOrganizer24.exe	91

C:\Users\Admin\AppData\Local\Temp\TaxOrganizer24.exe
"C:\Users\Admin\AppData\Local\Temp\TaxOrganizer24.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3608
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /C cmd.exe /C reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "TaxOrganizer24" /t REG_SZ /d "cmd.exe /C start \"\" /D \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\" \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\TaxOrganizer24.exe\"" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\system32\cmd.exe
    cmd.exe /C reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "TaxOrganizer24" /t REG_SZ /d "cmd.exe /C start \"\" /D \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\" \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\TaxOrganizer24.exe\"" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1592
  - - C:\Windows\system32\reg.exe
      reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "TaxOrganizer24" /t REG_SZ /d "cmd.exe /C start \"\" /D \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\" \"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices\TaxOrganizer24.exe\"" /f
      4⤵
      Adds Run key to start application
      PID:1028
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2152

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2152-61-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-69-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-60-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-62-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-74-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-72-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-56-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-73-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-70-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-57-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-59-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-75-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-51-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-71-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-65-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-66-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-67-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-68-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2152-49-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/3608-55-0x0000000068AC0000-0x0000000068ACE000-memory.dmp

Filesize
56KB

Download
memory/3608-50-0x0000000000270000-0x00000000004FC000-memory.dmp

Filesize
2.5MB

Download
memory/3608-52-0x0000000062E80000-0x0000000062E9F000-memory.dmp

Filesize
124KB

Download
memory/3608-53-0x0000000061CC0000-0x0000000061CE8000-memory.dmp

Filesize
160KB

Download
memory/3608-54-0x0000000064380000-0x0000000064415000-memory.dmp

Filesize
596KB

Download
memory/3608-0-0x00000000005F0000-0x0000000000600000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads