remcos | b25e19cd5dc45047c4ad68fbe940dd1f923800201666adf9164ec5fe5d74f6e4

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 02:46

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General

Target

3B84DCE82113710E5AE3F379EBD9FA13.exe
Size

1.1MB
MD5

3b84dce82113710e5ae3f379ebd9fa13
SHA1

26df2f5f9ba223ce4848586582172c9c20516416
SHA256

b25e19cd5dc45047c4ad68fbe940dd1f923800201666adf9164ec5fe5d74f6e4
SHA512

299ed1e965189ff3d25bd6e12790d93648c0d69959eeab8d5d7c4563c3488764eadf968855782d50d68c98d67a6a63be80828367ec704a102c407ebd7a2fa871
SSDEEP

24576:wHeZDOyc0wCqMXY1nhtFUSU6xNP1cQYY:wHbLm4ftFzx7c

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

45.149.241.204:435

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-DX92V7
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Detected Nirsoft tools 3 IoCs

Free utilities often used by attackers which can steal passwords, product keys, etc.

resource	yara_rule
behavioral1/memory/2292-47-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1800-49-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1436-46-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2292-47-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/1436-46-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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
2776	powershell.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	3B84DCE82113710E5AE3F379EBD9FA13.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2108 set thread context of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2572 set thread context of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 set thread context of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 set thread context of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39

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 7 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	3B84DCE82113710E5AE3F379EBD9FA13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3B84DCE82113710E5AE3F379EBD9FA13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3B84DCE82113710E5AE3F379EBD9FA13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3B84DCE82113710E5AE3F379EBD9FA13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3B84DCE82113710E5AE3F379EBD9FA13.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
2924	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2776	powershell.exe
1436	3B84DCE82113710E5AE3F379EBD9FA13.exe
1436	3B84DCE82113710E5AE3F379EBD9FA13.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2572	3B84DCE82113710E5AE3F379EBD9FA13.exe
2572	3B84DCE82113710E5AE3F379EBD9FA13.exe
2572	3B84DCE82113710E5AE3F379EBD9FA13.exe
2572	3B84DCE82113710E5AE3F379EBD9FA13.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	1800	3B84DCE82113710E5AE3F379EBD9FA13.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2776	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	31
PID 2108 wrote to memory of 2776	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	31
PID 2108 wrote to memory of 2776	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	31
PID 2108 wrote to memory of 2776	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	31
PID 2108 wrote to memory of 2924	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	33
PID 2108 wrote to memory of 2924	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	33
PID 2108 wrote to memory of 2924	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	33
PID 2108 wrote to memory of 2924	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	33
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2108 wrote to memory of 2572	2108	3B84DCE82113710E5AE3F379EBD9FA13.exe	35
PID 2572 wrote to memory of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 wrote to memory of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 wrote to memory of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 wrote to memory of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 wrote to memory of 1436	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	36
PID 2572 wrote to memory of 2604	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	37
PID 2572 wrote to memory of 2604	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	37
PID 2572 wrote to memory of 2604	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	37
PID 2572 wrote to memory of 2604	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	37
PID 2572 wrote to memory of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 wrote to memory of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 wrote to memory of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 wrote to memory of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 wrote to memory of 2292	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	38
PID 2572 wrote to memory of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39
PID 2572 wrote to memory of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39
PID 2572 wrote to memory of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39
PID 2572 wrote to memory of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39
PID 2572 wrote to memory of 1800	2572	3B84DCE82113710E5AE3F379EBD9FA13.exe	39

C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
"C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OZIxXQGIP.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OZIxXQGIP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7B19.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2924
- C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
  "C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
    C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\qxeaveiyhbmqeiosapzwbrscghpbi"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1436
- - C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
    C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\brjtvxssukevhpcwkslpeenlhogkbiip"
    3⤵
    PID:2604
- - C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
    C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\brjtvxssukevhpcwkslpeenlhogkbiip"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2292
- - C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe
    C:\Users\Admin\AppData\Local\Temp\3B84DCE82113710E5AE3F379EBD9FA13.exe /stext "C:\Users\Admin\AppData\Local\Temp\llpew"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1800

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\qxeaveiyhbmqeiosapzwbrscghpbi

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7B19.tmp

Filesize
1KB

MD5
2e4117bd9c9d3dffd390918ca00f454f

SHA1
eac3c179f8737111043438ab07bcc07d58fc2eea

SHA256
bc97bf4cb6021a63b797550caf53855470540c6d2342240d71010bfc60e1c4d6

SHA512
a5d42fb5c3c7e9476633df416b9f401bbf289cfb8da275a2568dee14ee57f2bdcca230dddad7abb59ab89d21fd801d3153ee4feba7a1bae7731b4ddc98df4a06

Download Submit
memory/1436-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1436-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1436-42-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1800-45-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1800-48-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1800-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2108-5-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2108-29-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2108-6-0x0000000007AA0000-0x0000000007B62000-memory.dmp

Filesize
776KB

Download
memory/2108-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2108-4-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2108-3-0x0000000000710000-0x0000000000728000-memory.dmp

Filesize
96KB

Download
memory/2108-2-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2108-1-0x0000000000010000-0x0000000000124000-memory.dmp

Filesize
1.1MB

Download
memory/2292-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2292-47-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2292-43-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2572-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2572-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-55-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2572-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2572-59-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2572-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2572-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download