remcos | 465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf

Analysis

max time kernel
148s
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
04-09-2024 12:49

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General

Target

465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe
Size

895KB
MD5

7441688208521af2eace2cecd3872f24
SHA1

4dd23aa0e9a5f340f5a1da50c272ec7047bbece1
SHA256

465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf
SHA512

be85c5f93a32a6fa244dbffc5dbabbfe007120065a9ed48faebc337e3e8496591d58a424d6026e8312675d476329942a60205d2349b598390b8176cd033459ce
SSDEEP

24576:n2BRYbqRRw+dsXFdyA8vY+P45afP16P1f9xER:n2BRlRRxdVTIy6P1rER

Score

10^/10

remcos 5764576 discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

5764576

172.93.218.178:45667

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
765-XJJE0J
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4136	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 640 set thread context of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97

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 4 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	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.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	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.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
5072	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4136	powershell.exe
4136	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4136	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 4136	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	93
PID 640 wrote to memory of 4136	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	93
PID 640 wrote to memory of 4136	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	93
PID 640 wrote to memory of 5072	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	95
PID 640 wrote to memory of 5072	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	95
PID 640 wrote to memory of 5072	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	95
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97
PID 640 wrote to memory of 1156	640	465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe	97

C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe
"C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OUsyxJ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4136
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OUsyxJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCC78.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5072
- C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe
  "C:\Users\Admin\AppData\Local\Temp\465c79cd8303aac9888982f9edbca10aecbf7b0dca4df78d2c3a2bb429104ebf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1156

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\Temp\__PSScriptPolicyTest_m4eglcaf.m2n.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCC78.tmp

Filesize
1KB

MD5
8104c7b76273bce30b3c2b49996e5113

SHA1
0d76862b5dd8f764823db99db978fa9fdc1de6ee

SHA256
e45bc71f6102296424ade7675a87b2c05e70a38d4eec5d89b6c12eb5e887769f

SHA512
3d994dd104b097980dbe798e974a3cf83e4139b34acacbea55ec6d6ab98d87759338d7bc97485fe876973cf8ddc521e06655edfd213d80afd7c469d1fb45b8b8

Download Submit
memory/640-41-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/640-2-0x0000000005280000-0x0000000005824000-memory.dmp

Filesize
5.6MB

Download
memory/640-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/640-4-0x0000000004BA0000-0x0000000004BAA000-memory.dmp

Filesize
40KB

Download
memory/640-6-0x00000000051A0000-0x00000000051BA000-memory.dmp

Filesize
104KB

Download
memory/640-7-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/640-8-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/640-9-0x00000000051D0000-0x00000000051DE000-memory.dmp

Filesize
56KB

Download
memory/640-10-0x0000000005FF0000-0x00000000060AE000-memory.dmp

Filesize
760KB

Download
memory/640-11-0x00000000085C0000-0x000000000865C000-memory.dmp

Filesize
624KB

Download
memory/640-1-0x00000000000C0000-0x00000000001A6000-memory.dmp

Filesize
920KB

Download
memory/640-3-0x0000000004BC0000-0x0000000004C52000-memory.dmp

Filesize
584KB

Download
memory/640-5-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/1156-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1156-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4136-21-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/4136-56-0x0000000007740000-0x00000000077E3000-memory.dmp

Filesize
652KB

Download
memory/4136-57-0x00000000080B0000-0x000000000872A000-memory.dmp

Filesize
6.5MB

Download
memory/4136-58-0x0000000007A70000-0x0000000007A8A000-memory.dmp

Filesize
104KB

Download
memory/4136-59-0x0000000007AE0000-0x0000000007AEA000-memory.dmp

Filesize
40KB

Download
memory/4136-60-0x0000000007CF0000-0x0000000007D86000-memory.dmp

Filesize
600KB

Download
memory/4136-61-0x0000000007C70000-0x0000000007C81000-memory.dmp

Filesize
68KB

Download
memory/4136-62-0x0000000007CA0000-0x0000000007CAE000-memory.dmp

Filesize
56KB

Download
memory/4136-63-0x0000000007CB0000-0x0000000007CC4000-memory.dmp

Filesize
80KB

Download
memory/4136-64-0x0000000007DB0000-0x0000000007DCA000-memory.dmp

Filesize
104KB

Download
memory/4136-65-0x0000000007D90000-0x0000000007D98000-memory.dmp

Filesize
32KB

Download
memory/4136-68-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4136-55-0x0000000006CA0000-0x0000000006CBE000-memory.dmp

Filesize
120KB

Download
memory/4136-45-0x000000006EF80000-0x000000006EFCC000-memory.dmp

Filesize
304KB

Download
memory/4136-44-0x0000000006D40000-0x0000000006D72000-memory.dmp

Filesize
200KB

Download
memory/4136-20-0x0000000005790000-0x00000000057B2000-memory.dmp

Filesize
136KB

Download
memory/4136-43-0x0000000006CF0000-0x0000000006D3C000-memory.dmp

Filesize
304KB

Download
memory/4136-42-0x0000000006730000-0x000000000674E000-memory.dmp

Filesize
120KB

Download
memory/4136-31-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4136-30-0x0000000006120000-0x0000000006474000-memory.dmp

Filesize
3.3MB

Download
memory/4136-23-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4136-22-0x0000000005F30000-0x0000000005F96000-memory.dmp

Filesize
408KB

Download
memory/4136-18-0x0000000005890000-0x0000000005EB8000-memory.dmp

Filesize
6.2MB

Download
memory/4136-17-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4136-16-0x0000000002E30000-0x0000000002E66000-memory.dmp

Filesize
216KB

Download