remcos | 26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714

Analysis

max time kernel
59s
max time network
58s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
30/03/2025, 20:33

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General

Target

26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
Size

1.3MB
MD5

63f6d5bd6cbaae5274581cf60c57dfc5
SHA1

15fb6bb6362e8df5819055d8b2a6cfdf4ea1878a
SHA256

26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714
SHA512

c71abd98e639639b946c5adea09fbdf52375e22e92b307806c24bd196e1cd55eed608624bf429a7c5a06d2ea039df05db138a0efd591fb5bd4d4683935e63e2c
SSDEEP

24576:hu6J33O0c+JY5UZ+XC0kGso6FaZ90TpjXepeA3Vh0IY0WY:zu0c++OCvkGs9FaZ90FDe4A3AZY

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

23.175.50.77:5568

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-AVW5XW
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\nonsubmerged.vbs	nonsubmerged.exe

Executes dropped EXE 1 IoCs

pid	Process
432	nonsubmerged.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000b000000024122-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 432 set thread context of 4508	432	nonsubmerged.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
916	432	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 3 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	nonsubmerged.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
432	nonsubmerged.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
432	nonsubmerged.exe
432	nonsubmerged.exe
4508	svchost.exe

Suspicious use of SendNotifyMessage 5 IoCs

pid	Process
5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
432	nonsubmerged.exe
432	nonsubmerged.exe
4508	svchost.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5360 wrote to memory of 432	5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe	89
PID 5360 wrote to memory of 432	5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe	89
PID 5360 wrote to memory of 432	5360	26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe	89
PID 432 wrote to memory of 4508	432	nonsubmerged.exe	90
PID 432 wrote to memory of 4508	432	nonsubmerged.exe	90
PID 432 wrote to memory of 4508	432	nonsubmerged.exe	90
PID 432 wrote to memory of 4508	432	nonsubmerged.exe	90

C:\Users\Admin\AppData\Local\Temp\26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe
"C:\Users\Admin\AppData\Local\Temp\26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5360
- C:\Users\Admin\AppData\Local\Bactris\nonsubmerged.exe
  "C:\Users\Admin\AppData\Local\Temp\26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:4508
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 432 -s 684
    3⤵
    - Program crash
    PID:916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 432 -ip 432
1⤵
PID:3936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\Bactris\nonsubmerged.exe

Filesize
1.3MB

MD5
63f6d5bd6cbaae5274581cf60c57dfc5

SHA1
15fb6bb6362e8df5819055d8b2a6cfdf4ea1878a

SHA256
26a8a6b3c9e1d0ff83095ee47dd40cb6c3e5f5c961b6a731d9282a85c99e9714

SHA512
c71abd98e639639b946c5adea09fbdf52375e22e92b307806c24bd196e1cd55eed608624bf429a7c5a06d2ea039df05db138a0efd591fb5bd4d4683935e63e2c

Download Submit
C:\Users\Admin\AppData\Local\Temp\oxmanship

Filesize
486KB

MD5
289e012a396df8d8c345cc31bebfcafb

SHA1
c0154cb7fb48b88a4eae722a4270f5158450eea9

SHA256
1635774578487d0714535c496e43d92266ba4c8b464405126d83c99942d7d44b

SHA512
cfbc2ca63757762722997f2c451e8dff9504e59120589f72b3d07b8a5f18862b58d71efdfc0aeb7e24136277219277d8bdc9e0a51c7fd364c2475fc48f436e75

Download Submit
memory/432-18-0x0000000001620000-0x0000000001A20000-memory.dmp

Filesize
4.0MB

Download
memory/4508-36-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-38-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-21-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-22-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-23-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-39-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-25-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-26-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-27-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-28-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-29-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-30-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-31-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-32-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-33-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-34-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-35-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-55-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-20-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-37-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-24-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-40-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-41-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-42-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-43-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-44-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-45-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-46-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-47-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-48-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-49-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-50-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-51-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-52-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-53-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4508-54-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/5360-6-0x00000000010E0000-0x00000000014E0000-memory.dmp

Filesize
4.0MB

Download