remcos | 446f71d11ea1f792d1d7346723e4a907fbff6cd164bcf2f31605d77eeab84a93

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
2352	powershell.exe
2856	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 3000	2380	Bordereau de versement.exe	35

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

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
2896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2380	Bordereau de versement.exe
2380	Bordereau de versement.exe
2352	powershell.exe
2856	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	Bordereau de versement.exe
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	2352	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2352	2380	Bordereau de versement.exe	29
PID 2380 wrote to memory of 2352	2380	Bordereau de versement.exe	29
PID 2380 wrote to memory of 2352	2380	Bordereau de versement.exe	29
PID 2380 wrote to memory of 2352	2380	Bordereau de versement.exe	29
PID 2380 wrote to memory of 2856	2380	Bordereau de versement.exe	31
PID 2380 wrote to memory of 2856	2380	Bordereau de versement.exe	31
PID 2380 wrote to memory of 2856	2380	Bordereau de versement.exe	31
PID 2380 wrote to memory of 2856	2380	Bordereau de versement.exe	31
PID 2380 wrote to memory of 2896	2380	Bordereau de versement.exe	32
PID 2380 wrote to memory of 2896	2380	Bordereau de versement.exe	32
PID 2380 wrote to memory of 2896	2380	Bordereau de versement.exe	32
PID 2380 wrote to memory of 2896	2380	Bordereau de versement.exe	32
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35
PID 2380 wrote to memory of 3000	2380	Bordereau de versement.exe	35

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:2380
- 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:2352
- 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:2856
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HssCNlssJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1DCD.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2896
- 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:3000

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1DCD.tmp

Filesize
1KB

MD5
b7960915693a84e5d255d36f47edb65f

SHA1
46256e6750e2e7c01d9330963701f3fac3c1d362

SHA256
5726f26a83a9b98fbe2d67b303badb0848766d8064c519f2b9662581a1f64bcd

SHA512
bad0914b2173a274c48eaf093562a47c033739dda8a05166f64763d5ee892cfff02e33fd7abc7d7495bf91015dbf48a96909b3eac06bae1c9284f12b22bb4fb2

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

Filesize
7KB

MD5
fe90c7e61e99a07ee087b548f7915454

SHA1
5254d013d2eab94e9c8bc5d01476bac0f6fc829c

SHA256
d61c4962681c220206ce40f82472248a512f40b4615852a478e7adfee032d031

SHA512
313ff9d1c259581d5d7078331d254189e7db01fe29bdabd324448cedf5447874367030fba77bb0109bbc4e7397a8b35cc59c5346d0fe386421306b6f2db6fa77

Download Submit
memory/2380-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x0000000001070000-0x000000000114A000-memory.dmp

Filesize
872KB

Download
memory/2380-2-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2380-3-0x0000000000290000-0x000000000029E000-memory.dmp

Filesize
56KB

Download
memory/2380-4-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2380-5-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2380-6-0x0000000005530000-0x00000000055EE000-memory.dmp

Filesize
760KB

Download
memory/2380-40-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/3000-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3000-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3000-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads