remcos | 08d247fb70ecc7efcd06910e6ae50d308cd6850987943a07374028a9d7c77415

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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
2204	powershell.exe
3068	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	Bordereau de versement.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 4552	1120	Bordereau de versement.exe	95

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
4892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1120	Bordereau de versement.exe
2204	powershell.exe
3068	powershell.exe
1120	Bordereau de versement.exe
3068	powershell.exe
2204	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	Bordereau de versement.exe
Token: SeDebugPrivilege	2204	powershell.exe
Token: SeDebugPrivilege	3068	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2204	1120	Bordereau de versement.exe	89
PID 1120 wrote to memory of 2204	1120	Bordereau de versement.exe	89
PID 1120 wrote to memory of 2204	1120	Bordereau de versement.exe	89
PID 1120 wrote to memory of 3068	1120	Bordereau de versement.exe	91
PID 1120 wrote to memory of 3068	1120	Bordereau de versement.exe	91
PID 1120 wrote to memory of 3068	1120	Bordereau de versement.exe	91
PID 1120 wrote to memory of 4892	1120	Bordereau de versement.exe	93
PID 1120 wrote to memory of 4892	1120	Bordereau de versement.exe	93
PID 1120 wrote to memory of 4892	1120	Bordereau de versement.exe	93
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95
PID 1120 wrote to memory of 4552	1120	Bordereau de versement.exe	95

C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe
"C:\Users\Admin\AppData\Local\Temp\Bordereau de versement.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120
- 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:2204
- 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:3068
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HssCNlssJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC6A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4892
- 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:4552

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
2f8102f7b924c280542046b0c15ae47b

SHA1
062873895e5f09af8cd0318cb91af63f77d084ba

SHA256
21e64f322ec0d6d653947172f6b86f4954fd3f1b63639db590dab2d37b0f68ce

SHA512
0f2534398c6e451215d018d6bf2a278f5a8469ed9c26af88c6c6a4dadd40a1d220bfe85e93710652a84c8db1ee48e399b96478e28a6ed72e1acb85b543af41fa

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c3tpmm0u.e3z.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBC6A.tmp

Filesize
1KB

MD5
7b88ba8f5eff7e4fadc583c7ede669b7

SHA1
6673eb54afeb53b22d057f9c47085fc330ea9da3

SHA256
c655263771711fec9a33d68fd5b7cc62e1a774cc8e6725c82f9f298811b74e05

SHA512
c0120d0b667a3e2870e2ee85704ca2e1ddc7b5c418559200215fdc762f6fd9b524e47326b7c9eb35b9d60e68437dfde96db01d3c36d1ef42b0a0958e81a3eb25

Download Submit
memory/1120-4-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/1120-5-0x0000000005670000-0x000000000567A000-memory.dmp

Filesize
40KB

Download
memory/1120-6-0x00000000058A0000-0x00000000058AE000-memory.dmp

Filesize
56KB

Download
memory/1120-7-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/1120-8-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/1120-9-0x00000000070B0000-0x000000000716E000-memory.dmp

Filesize
760KB

Download
memory/1120-10-0x0000000009720000-0x00000000097BC000-memory.dmp

Filesize
624KB

Download
memory/1120-51-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/1120-3-0x00000000056D0000-0x0000000005762000-memory.dmp

Filesize
584KB

Download
memory/1120-2-0x0000000005BE0000-0x0000000006184000-memory.dmp

Filesize
5.6MB

Download
memory/1120-1-0x0000000000BD0000-0x0000000000CAA000-memory.dmp

Filesize
872KB

Download
memory/1120-0-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/2204-18-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2204-65-0x0000000075780000-0x00000000757CC000-memory.dmp

Filesize
304KB

Download
memory/2204-25-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2204-23-0x0000000005FD0000-0x0000000006036000-memory.dmp

Filesize
408KB

Download
memory/2204-22-0x0000000005810000-0x0000000005876000-memory.dmp

Filesize
408KB

Download
memory/2204-21-0x0000000005770000-0x0000000005792000-memory.dmp

Filesize
136KB

Download
memory/2204-17-0x00000000059A0000-0x0000000005FC8000-memory.dmp

Filesize
6.2MB

Download
memory/2204-16-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2204-92-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/2204-86-0x0000000007ED0000-0x0000000007ED8000-memory.dmp

Filesize
32KB

Download
memory/2204-85-0x0000000007EF0000-0x0000000007F0A000-memory.dmp

Filesize
104KB

Download
memory/2204-84-0x0000000007DF0000-0x0000000007E04000-memory.dmp

Filesize
80KB

Download
memory/2204-15-0x00000000052B0000-0x00000000052E6000-memory.dmp

Filesize
216KB

Download
memory/3068-19-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3068-52-0x0000000005DA0000-0x0000000005DBE000-memory.dmp

Filesize
120KB

Download
memory/3068-53-0x00000000062E0000-0x000000000632C000-memory.dmp

Filesize
304KB

Download
memory/3068-55-0x0000000075780000-0x00000000757CC000-memory.dmp

Filesize
304KB

Download
memory/3068-54-0x0000000006D60000-0x0000000006D92000-memory.dmp

Filesize
200KB

Download
memory/3068-74-0x0000000006350000-0x000000000636E000-memory.dmp

Filesize
120KB

Download
memory/3068-75-0x0000000006DA0000-0x0000000006E43000-memory.dmp

Filesize
652KB

Download
memory/3068-93-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3068-79-0x00000000070C0000-0x00000000070DA000-memory.dmp

Filesize
104KB

Download
memory/3068-78-0x0000000007710000-0x0000000007D8A000-memory.dmp

Filesize
6.5MB

Download
memory/3068-20-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3068-80-0x0000000007130000-0x000000000713A000-memory.dmp

Filesize
40KB

Download
memory/3068-81-0x0000000007340000-0x00000000073D6000-memory.dmp

Filesize
600KB

Download
memory/3068-82-0x00000000072C0000-0x00000000072D1000-memory.dmp

Filesize
68KB

Download
memory/3068-83-0x00000000072F0000-0x00000000072FE000-memory.dmp

Filesize
56KB

Download
memory/3068-26-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3068-27-0x0000000005730000-0x0000000005A84000-memory.dmp

Filesize
3.3MB

Download
memory/4552-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4552-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download