remcos | 08d247fb70ecc7efcd06910e6ae50d308cd6850987943a07374028a9d7c77415

Analysis

max time kernel
148s
max time network
146s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 15:02

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General

Target

Bordereau de versement.exe
Size

849KB
MD5

90b3d027e4e43d4c867f04b4c89c8589
SHA1

c23bed92fbe828fa9699115d15e0296ba18ca561
SHA256

bac49390230b8d170af75761bf64a3e877b570bea0c9b5ba73dd54a7fab5c351
SHA512

c5ad505038b66cc8388cfd8d558734663ab3a01e648fe91a25f3103e0493d78e42d03d7090a6738fbf0acda474511be9af57b0416618df3cfb089bb326b82fe4
SSDEEP

24576:wWnj81akfCViEDhkD+08jwUNH7wMOYfcuLTJdHRa:wWg1akf8iehgzIHJ7wMODIVdHRa

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-41EVS0
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
584	powershell.exe
2708	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 2628	1728	Bordereau de versement.exe	40

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 5 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	Bordereau de versement.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Bordereau de versement.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
1728	Bordereau de versement.exe
584	powershell.exe
2708	powershell.exe
1728	Bordereau de versement.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	Bordereau de versement.exe
Token: SeDebugPrivilege	584	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 584	1728	Bordereau de versement.exe	31
PID 1728 wrote to memory of 584	1728	Bordereau de versement.exe	31
PID 1728 wrote to memory of 584	1728	Bordereau de versement.exe	31
PID 1728 wrote to memory of 584	1728	Bordereau de versement.exe	31
PID 1728 wrote to memory of 2708	1728	Bordereau de versement.exe	33
PID 1728 wrote to memory of 2708	1728	Bordereau de versement.exe	33
PID 1728 wrote to memory of 2708	1728	Bordereau de versement.exe	33
PID 1728 wrote to memory of 2708	1728	Bordereau de versement.exe	33
PID 1728 wrote to memory of 2704	1728	Bordereau de versement.exe	34
PID 1728 wrote to memory of 2704	1728	Bordereau de versement.exe	34
PID 1728 wrote to memory of 2704	1728	Bordereau de versement.exe	34
PID 1728 wrote to memory of 2704	1728	Bordereau de versement.exe	34
PID 1728 wrote to memory of 2792	1728	Bordereau de versement.exe	37
PID 1728 wrote to memory of 2792	1728	Bordereau de versement.exe	37
PID 1728 wrote to memory of 2792	1728	Bordereau de versement.exe	37
PID 1728 wrote to memory of 2792	1728	Bordereau de versement.exe	37
PID 1728 wrote to memory of 2692	1728	Bordereau de versement.exe	38
PID 1728 wrote to memory of 2692	1728	Bordereau de versement.exe	38
PID 1728 wrote to memory of 2692	1728	Bordereau de versement.exe	38
PID 1728 wrote to memory of 2692	1728	Bordereau de versement.exe	38
PID 1728 wrote to memory of 2848	1728	Bordereau de versement.exe	39
PID 1728 wrote to memory of 2848	1728	Bordereau de versement.exe	39
PID 1728 wrote to memory of 2848	1728	Bordereau de versement.exe	39
PID 1728 wrote to memory of 2848	1728	Bordereau de versement.exe	39
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40
PID 1728 wrote to memory of 2628	1728	Bordereau de versement.exe	40

C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
"C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:584
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\HssCNlssJ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HssCNlssJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE927.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2704
- C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
  "C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
  2⤵
  PID:2792
- C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
  "C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
  2⤵
  PID:2692
- C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
  "C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
  2⤵
  PID:2848
- C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
  "C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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\Temp\tmpE927.tmp

Filesize
1KB

MD5
c61e128302c2350708a47108ecc568d4

SHA1
9c4c7cacf0726e372dde2fe2bbaf2b28b4e74db8

SHA256
0a51b7d4fee183eff6779e5e6cd06015433ed491ed7948ee9283371f65499731

SHA512
ca9e6baa2c57e8885c81db39359d3d79fce270de1c9b60637fccc7510fdaa83accce2865124e971657507f1af33e0bf1b81b040ec867ebdbb59e54ab22bdbf3b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
1fbacdc4c0eb7d686f0e734dcdd6a423

SHA1
d667fd134632b2800e994ecf1341381d70ad4c7b

SHA256
a196b8eb6f8f754fd290d46ea3d8c65687b2abc0de714d38b24401490d8c5836

SHA512
f5bc43fdcb1f3ddde8a56acdf3514a8d676f92f518cc45092cd10734ed6aa666419746ec0366ba7346736c90a2b3fe512beacb63347e7ad5dc46fdd387cdaafa

Download Submit
memory/1728-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1728-1-0x0000000000260000-0x000000000033A000-memory.dmp

Filesize
872KB

Download
memory/1728-2-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-3-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1728-4-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/1728-5-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/1728-6-0x0000000005480000-0x000000000553E000-memory.dmp

Filesize
760KB

Download
memory/1728-40-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2628-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2628-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download