remcos | 446f71d11ea1f792d1d7346723e4a907fbff6cd164bcf2f31605d77eeab84a93

Analysis

max time kernel
147s
max time network
149s
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 01:11

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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
1692	powershell.exe
636	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	Bordereau de versement.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3960 set thread context of 3664	3960	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	schtasks.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	powershell.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
1680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3960	Bordereau de versement.exe
1692	powershell.exe
636	powershell.exe
3960	Bordereau de versement.exe
636	powershell.exe
1692	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3960	Bordereau de versement.exe
Token: SeDebugPrivilege	1692	powershell.exe
Token: SeDebugPrivilege	636	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 1692	3960	Bordereau de versement.exe	89
PID 3960 wrote to memory of 1692	3960	Bordereau de versement.exe	89
PID 3960 wrote to memory of 1692	3960	Bordereau de versement.exe	89
PID 3960 wrote to memory of 636	3960	Bordereau de versement.exe	91
PID 3960 wrote to memory of 636	3960	Bordereau de versement.exe	91
PID 3960 wrote to memory of 636	3960	Bordereau de versement.exe	91
PID 3960 wrote to memory of 1680	3960	Bordereau de versement.exe	93
PID 3960 wrote to memory of 1680	3960	Bordereau de versement.exe	93
PID 3960 wrote to memory of 1680	3960	Bordereau de versement.exe	93
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	Bordereau de versement.exe	95
PID 3960 wrote to memory of 3664	3960	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:3960
- 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:1692
- 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:636
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HssCNlssJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC16B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1680
- 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:3664

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

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5gt4yh5x.e4k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC16B.tmp

Filesize
1KB

MD5
a452d44c78393924a907eff8ad872b53

SHA1
9dc7cc5ffa3cabca9acea5aa62892ac46b0859b4

SHA256
a668b3eae0cb82c20b67b66622f6ebeaeb2219414cc1afc06a65d519ff179202

SHA512
d31732e9a24b1a0c19b1348815669b541e84b5dd963fc0f8f9dbaa0e66b54457cce2e4a1a3555ffbd32062390dbf18140e89840078b79a43f806537dc19cfa54

Download Submit
memory/636-81-0x00000000071F0000-0x0000000007286000-memory.dmp

Filesize
600KB

Download
memory/636-85-0x00000000072B0000-0x00000000072CA000-memory.dmp

Filesize
104KB

Download
memory/636-84-0x00000000071B0000-0x00000000071C4000-memory.dmp

Filesize
80KB

Download
memory/636-83-0x00000000071A0000-0x00000000071AE000-memory.dmp

Filesize
56KB

Download
memory/636-82-0x0000000007170000-0x0000000007181000-memory.dmp

Filesize
68KB

Download
memory/636-20-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/636-66-0x00000000703C0000-0x000000007040C000-memory.dmp

Filesize
304KB

Download
memory/636-50-0x0000000005C30000-0x0000000005C4E000-memory.dmp

Filesize
120KB

Download
memory/636-52-0x0000000005F50000-0x0000000005F9C000-memory.dmp

Filesize
304KB

Download
memory/636-21-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/636-43-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/636-86-0x0000000007290000-0x0000000007298000-memory.dmp

Filesize
32KB

Download
memory/636-90-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/1692-65-0x00000000072B0000-0x00000000072CE000-memory.dmp

Filesize
120KB

Download
memory/1692-54-0x00000000066B0000-0x00000000066E2000-memory.dmp

Filesize
200KB

Download
memory/1692-29-0x0000000005AE0000-0x0000000005B46000-memory.dmp

Filesize
408KB

Download
memory/1692-28-0x0000000005A00000-0x0000000005A66000-memory.dmp

Filesize
408KB

Download
memory/1692-18-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/1692-17-0x00000000052E0000-0x0000000005908000-memory.dmp

Filesize
6.2MB

Download
memory/1692-91-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/1692-79-0x0000000007480000-0x000000000748A000-memory.dmp

Filesize
40KB

Download
memory/1692-78-0x0000000007410000-0x000000000742A000-memory.dmp

Filesize
104KB

Download
memory/1692-77-0x0000000007A50000-0x00000000080CA000-memory.dmp

Filesize
6.5MB

Download
memory/1692-44-0x0000000005C50000-0x0000000005FA4000-memory.dmp

Filesize
3.3MB

Download
memory/1692-16-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/1692-22-0x0000000005960000-0x0000000005982000-memory.dmp

Filesize
136KB

Download
memory/1692-15-0x00000000027B0000-0x00000000027E6000-memory.dmp

Filesize
216KB

Download
memory/1692-76-0x00000000072D0000-0x0000000007373000-memory.dmp

Filesize
652KB

Download
memory/1692-55-0x00000000703C0000-0x000000007040C000-memory.dmp

Filesize
304KB

Download
memory/3664-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-110-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-108-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-109-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-93-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-97-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3664-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3960-51-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3960-1-0x00000000008E0000-0x00000000009BA000-memory.dmp

Filesize
872KB

Download
memory/3960-2-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/3960-3-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/3960-4-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/3960-5-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3960-6-0x00000000054C0000-0x00000000054CE000-memory.dmp

Filesize
56KB

Download
memory/3960-7-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/3960-8-0x0000000074DE0000-0x0000000075590000-memory.dmp

Filesize
7.7MB

Download
memory/3960-9-0x0000000006DD0000-0x0000000006E8E000-memory.dmp

Filesize
760KB

Download
memory/3960-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/3960-10-0x0000000009440000-0x00000000094DC000-memory.dmp

Filesize
624KB

Download