remcos | 08d247fb70ecc7efcd06910e6ae50d308cd6850987943a07374028a9d7c77415

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

C2

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
2576	powershell.exe
2912	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1720 set thread context of 2776	1720	Bordereau de versement.exe	36

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1720	Bordereau de versement.exe
1720	Bordereau de versement.exe
2576	powershell.exe
2912	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1720	Bordereau de versement.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	2912	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2576	1720	Bordereau de versement.exe	30
PID 1720 wrote to memory of 2576	1720	Bordereau de versement.exe	30
PID 1720 wrote to memory of 2576	1720	Bordereau de versement.exe	30
PID 1720 wrote to memory of 2576	1720	Bordereau de versement.exe	30
PID 1720 wrote to memory of 2912	1720	Bordereau de versement.exe	32
PID 1720 wrote to memory of 2912	1720	Bordereau de versement.exe	32
PID 1720 wrote to memory of 2912	1720	Bordereau de versement.exe	32
PID 1720 wrote to memory of 2912	1720	Bordereau de versement.exe	32
PID 1720 wrote to memory of 2892	1720	Bordereau de versement.exe	34
PID 1720 wrote to memory of 2892	1720	Bordereau de versement.exe	34
PID 1720 wrote to memory of 2892	1720	Bordereau de versement.exe	34
PID 1720 wrote to memory of 2892	1720	Bordereau de versement.exe	34
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36
PID 1720 wrote to memory of 2776	1720	Bordereau de versement.exe	36

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:1720
- 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:2576
- 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:2912
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HssCNlssJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFE6B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2892
- 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:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFE6B.tmp

Filesize
1KB

MD5
4b64c22191fdc5f7e351fbb09f99a187

SHA1
8df35d878d5bda4f2478b455749ce38d7c780290

SHA256
7d84f696b956d9c000e97ed8f2a64f8ece66d0f6ce55985cc1a142cf79db310b

SHA512
c4155b732b622666bffd755c4a8eb75c6d55fa591eb39acc5c08a5554fd03d1771cf4483538c667c3e403306b7093805fa6cd87b9d55c36c7944c7b886988104

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

Filesize
7KB

MD5
d9c5d899235f04e363026cff74e9fa57

SHA1
da82472d4377a15a36451015b574c9f68029d42d

SHA256
8ad612993f5f9def34705e79969c6661b08e1a41e75724aa5fbd68844f5076f0

SHA512
7e0b0effcf37f24fec7250b0868473e1e3e50e94be35b957aebacb823decc6d538029885e0de07b3655cea2ed493a598bb3bcae6643b4174d573906b7c723ef3

Download Submit
memory/1720-0-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/1720-1-0x0000000000FD0000-0x00000000010AA000-memory.dmp

Filesize
872KB

Download
memory/1720-2-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1720-3-0x0000000000540000-0x000000000054E000-memory.dmp

Filesize
56KB

Download
memory/1720-4-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/1720-5-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1720-6-0x0000000005370000-0x000000000542E000-memory.dmp

Filesize
760KB

Download
memory/1720-40-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/2776-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2776-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads