remcos | 200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e

General

Target

200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
Size

1.2MB
MD5

0b47488dfc9ded8128a52e8061fb6b33
SHA1

9605ff2f9c6b2a4b293979fbc30489bb90c98404
SHA256

200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e
SHA512

9a72c4633b0e206fa0a9b105ab50cf6e7d0a4e738ff98c367374647bca20a6e8fcb341f197a2d1f70deaf9c6a7e3edc2bf4f61148c4eb2b147280621f5a09e76
SSDEEP

24576:nAHnh+eWsN3skA4RV1Hom2KXMmHa0a92mSBRZZQv8gYbqNV98Hf5:ah+ZkldoPK8Yap92PBnO8lqNVmR

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

chefdnshost.duckdns.org:6720

Attributes

audio_folder
MicRecords
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-1H7SC3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
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\demonetised.vbs	demonetised.exe

Executes dropped EXE 1 IoCs

pid	Process
2320	demonetised.exe

Loads dropped DLL 6 IoCs

pid	Process
2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
580	WerFault.exe
580	WerFault.exe
580	WerFault.exe
580	WerFault.exe
580	WerFault.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000018728-12.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2320 set thread context of 2484	2320	demonetised.exe	31

Program crash 1 IoCs

pid	pid_target	Process	procid_target
580	2320	WerFault.exe	30

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	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	demonetised.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2320	demonetised.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
2320	demonetised.exe
2320	demonetised.exe
2484	svchost.exe

Suspicious use of SendNotifyMessage 5 IoCs

pid	Process
2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
2320	demonetised.exe
2320	demonetised.exe
2484	svchost.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 2320	2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe	30
PID 2236 wrote to memory of 2320	2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe	30
PID 2236 wrote to memory of 2320	2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe	30
PID 2236 wrote to memory of 2320	2236	200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe	30
PID 2320 wrote to memory of 2484	2320	demonetised.exe	31
PID 2320 wrote to memory of 2484	2320	demonetised.exe	31
PID 2320 wrote to memory of 2484	2320	demonetised.exe	31
PID 2320 wrote to memory of 2484	2320	demonetised.exe	31
PID 2320 wrote to memory of 2484	2320	demonetised.exe	31
PID 2320 wrote to memory of 580	2320	demonetised.exe	32
PID 2320 wrote to memory of 580	2320	demonetised.exe	32
PID 2320 wrote to memory of 580	2320	demonetised.exe	32
PID 2320 wrote to memory of 580	2320	demonetised.exe	32

C:\Users\Admin\AppData\Local\Temp\200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe
"C:\Users\Admin\AppData\Local\Temp\200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\ambiparous\demonetised.exe
  "C:\Users\Admin\AppData\Local\Temp\200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.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:2320
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:2484
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 320
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\ambiparous\demonetised.exe

Filesize
1.2MB

MD5
0b47488dfc9ded8128a52e8061fb6b33

SHA1
9605ff2f9c6b2a4b293979fbc30489bb90c98404

SHA256
200eca54c7f6341b7df45fda4062dfd87c141ce38325adebf1bd79f1a4615d8e

SHA512
9a72c4633b0e206fa0a9b105ab50cf6e7d0a4e738ff98c367374647bca20a6e8fcb341f197a2d1f70deaf9c6a7e3edc2bf4f61148c4eb2b147280621f5a09e76

Download Submit
memory/2236-10-0x0000000000160000-0x0000000000164000-memory.dmp

Filesize
16KB

Download
memory/2484-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2484-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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