remcos | 9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08-11-2024 03:26

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General

Target

9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Size

1.9MB
MD5

b85c47881ba0eb0b556b83827f8e75c8
SHA1

dccdf0daee468f9e9bed3edf928f0839d26b47cb
SHA256

9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20
SHA512

ca158aff36e4eeff5d1c263a79972dfa0aa7584132f12a3d301a5cc5c47b57309fe71b4837c7b8caa5022cb18529b565d6a0849acdabd1af939b76b48284a605
SSDEEP

49152:nagZNlJJziNRWZVTyrNR6yUd/dSlilQBsq5jL:nawNlvWNRlrHSGRBsqR

Score

10^/10

remcos dpdnow discovery evasion persistence rat

Malware Config

Extracted

Family

remcos

Botnet

DPDNOW

dpdnow.duckdns.org:8452

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
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-A34JIZ
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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	remcos.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	remcos.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	remcos.exe

Executes dropped EXE 1 IoCs

pid	Process
2836	remcos.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	remcos.exe

Loads dropped DLL 2 IoCs

pid	Process
564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
2836	remcos.exe

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 2 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	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
2836	remcos.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2836	remcos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 564 wrote to memory of 2836	564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe	30
PID 564 wrote to memory of 2836	564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe	30
PID 564 wrote to memory of 2836	564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe	30
PID 564 wrote to memory of 2836	564	9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe	30

C:\Users\Admin\AppData\Local\Temp\9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe
"C:\Users\Admin\AppData\Local\Temp\9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:564
- C:\ProgramData\Remcos\remcos.exe
  "C:\ProgramData\Remcos\remcos.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:2836

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

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Remcos\logs.dat

Filesize
144B

MD5
effacc3a0e8ad2a31fc0234871f45635

SHA1
e3c26dbb2c61e349b1bc87b7d4da81cdce5e1fc3

SHA256
b239fba23ab220b6e6a3e72a116b32df61521c1b04bc1ccbbbd8a401d386c008

SHA512
721ace7d684b406d9ee04af9a8af1bac869d1e2bcedb41341fb8ab3e63cf2a5278c629928f0b367336c0dbc05cbf8b84910c189059daf2e777bfe0e3f28d8324

Download Submit
\ProgramData\Remcos\remcos.exe

Filesize
1.9MB

MD5
b85c47881ba0eb0b556b83827f8e75c8

SHA1
dccdf0daee468f9e9bed3edf928f0839d26b47cb

SHA256
9d577624acca69f5b4097a6882e934b026a344757cf5cf31f3341e643ed2ba20

SHA512
ca158aff36e4eeff5d1c263a79972dfa0aa7584132f12a3d301a5cc5c47b57309fe71b4837c7b8caa5022cb18529b565d6a0849acdabd1af939b76b48284a605

Download Submit
memory/564-0-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/564-1-0x0000000077D20000-0x0000000077D22000-memory.dmp

Filesize
8KB

Download
memory/564-3-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/564-2-0x0000000000401000-0x000000000043C000-memory.dmp

Filesize
236KB

Download
memory/564-5-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/564-16-0x0000000004D20000-0x00000000051DF000-memory.dmp

Filesize
4.7MB

Download
memory/564-15-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-31-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-35-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-20-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-21-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-22-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-23-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-25-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-26-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-27-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-29-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-30-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-18-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-32-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-33-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-34-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-19-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-37-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-38-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-17-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-41-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-44-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-47-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-50-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-53-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-56-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-59-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-62-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-65-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-68-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-71-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download
memory/2836-74-0x0000000000400000-0x00000000008BF000-memory.dmp

Filesize
4.7MB

Download