remcos | dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 03:09

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General

Target

dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
Size

1.3MB
MD5

973306ff45c5b4ee7333db7a5ef7a0f9
SHA1

32c7065633f821f72f2c2af4a572414cdd79ea91
SHA256

dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db
SHA512

2d703af64af2c213de8e92ab0fa77d692f55f15c3e85d4f5aa4eb6fc049b2ab36ef8ac7b25a85c06aef8eb22972e5103fb5533288f9f9cccabbbaadebc892540
SSDEEP

24576:ztb20pkaCqT5TBWgNQ7ato13PtKK5QXpdbt86F+LAisTLZ6A:wVg5tQ7at8FFOpXt+LAiY5

Score

10^/10

remcos work discovery rat

Malware Config

Extracted

Family

remcos

Botnet

WORK

netflixyoutubebrowser.duckdns.org:34043

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-CDDRK8
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\schoollike.vbs	schoollike.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	schoollike.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/4496-6-0x00000000018D0000-0x0000000001CD0000-memory.dmp	autoit_exe
behavioral2/files/0x000a000000023b65-10.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4784 set thread context of 3472	4784	schoollike.exe	84

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	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schoollike.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4784	schoollike.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
4784	schoollike.exe
4784	schoollike.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
4784	schoollike.exe
4784	schoollike.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 4784	4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe	83
PID 4496 wrote to memory of 4784	4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe	83
PID 4496 wrote to memory of 4784	4496	dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe	83
PID 4784 wrote to memory of 3472	4784	schoollike.exe	84
PID 4784 wrote to memory of 3472	4784	schoollike.exe	84
PID 4784 wrote to memory of 3472	4784	schoollike.exe	84
PID 4784 wrote to memory of 3472	4784	schoollike.exe	84

C:\Users\Admin\AppData\Local\Temp\dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe
"C:\Users\Admin\AppData\Local\Temp\dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Users\Admin\AppData\Local\penstocks\schoollike.exe
  "C:\Users\Admin\AppData\Local\Temp\dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.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:4784
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3472

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\penstocks\schoollike.exe

Filesize
1.3MB

MD5
973306ff45c5b4ee7333db7a5ef7a0f9

SHA1
32c7065633f821f72f2c2af4a572414cdd79ea91

SHA256
dec26f7cc646acdff30d90fae8837623c70870ed0cc9020930f95b53b6b730db

SHA512
2d703af64af2c213de8e92ab0fa77d692f55f15c3e85d4f5aa4eb6fc049b2ab36ef8ac7b25a85c06aef8eb22972e5103fb5533288f9f9cccabbbaadebc892540

Download Submit
memory/3472-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3472-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4496-6-0x00000000018D0000-0x0000000001CD0000-memory.dmp

Filesize
4.0MB

Download
memory/4784-18-0x0000000001A20000-0x0000000001E20000-memory.dmp

Filesize
4.0MB

Download