remcos | c895cb359d954ef200b7b9e66c89e33707790fb42870f8bc1910aa86f504a999

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-11-2024 14:39

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General

Target

Quote.exe
Size

3.6MB
MD5

f0d650c7b934f6ff1d956df107f5a599
SHA1

55d1d465e7440fe88c39c827a890784c182986f5
SHA256

c895cb359d954ef200b7b9e66c89e33707790fb42870f8bc1910aa86f504a999
SHA512

224735b7eed4f512866b27f4b327e29da0489b664d6a1cd7c3f65c01c54897831c8345d5767a8a5a36b4eba2424a39cc5b005bd82ed405dc422680d4faee24ec
SSDEEP

24576:9D9ffPc5XcI26mC6Vwd+hiKptzEodhdXf7:9D9PUXcIhmWdTAt4odhdXj

Score

10^/10

remcos remotehost collection discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

opengatesfavour.duckdns.org:4202

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-E39QNY
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 9 IoCs

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

resource	yara_rule
behavioral2/memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2076-31-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3004-35-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/3004-30-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2392-29-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2076-28-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/3004-25-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2076-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/2392-38-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2076-31-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2076-28-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2076-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2392-29-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/2392-38-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	csc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2724 set thread context of 3564	2724	Quote.exe	86
PID 3564 set thread context of 2392	3564	csc.exe	96
PID 3564 set thread context of 2076	3564	csc.exe	97
PID 3564 set thread context of 3004	3564	csc.exe	98

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	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2392	csc.exe
2392	csc.exe
3004	csc.exe
3004	csc.exe
2392	csc.exe
2392	csc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
3564	csc.exe
3564	csc.exe
3564	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	csc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 3564	2724	Quote.exe	86
PID 2724 wrote to memory of 2144	2724	Quote.exe	87
PID 2724 wrote to memory of 2144	2724	Quote.exe	87
PID 2724 wrote to memory of 2144	2724	Quote.exe	87
PID 3564 wrote to memory of 2392	3564	csc.exe	96
PID 3564 wrote to memory of 2392	3564	csc.exe	96
PID 3564 wrote to memory of 2392	3564	csc.exe	96
PID 3564 wrote to memory of 2392	3564	csc.exe	96
PID 3564 wrote to memory of 2076	3564	csc.exe	97
PID 3564 wrote to memory of 2076	3564	csc.exe	97
PID 3564 wrote to memory of 2076	3564	csc.exe	97
PID 3564 wrote to memory of 2076	3564	csc.exe	97
PID 3564 wrote to memory of 3004	3564	csc.exe	98
PID 3564 wrote to memory of 3004	3564	csc.exe	98
PID 3564 wrote to memory of 3004	3564	csc.exe	98
PID 3564 wrote to memory of 3004	3564	csc.exe	98

C:\Users\Admin\AppData\Local\Temp\Quote.exe
"C:\Users\Admin\AppData\Local\Temp\Quote.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3564
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\xzmzrkahggc"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2392
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\hcsrruljuoukvx"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2076
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe /stext "C:\Users\Admin\AppData\Local\Temp\kwfksnwciwmpxlkxf"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3004
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:2144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
4KB

MD5
f1d2c01ce674ad7d5bad04197c371fbc

SHA1
4bf0ed04d156a3dc6c8d27e134ecbda76d3585aa

SHA256
25b006032deccd628940ef728fffe83b325a85de453a34691f55f570e4460094

SHA512
81cb982cc33dcc27600a8a681c3ec3cc5b9221b95baa45e1ab24479745a9638b9f31d7beeeb1128b3294ff69b44e958c75e25d565f66790c364665caff96ee77

Download Submit
memory/2076-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2076-19-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2076-28-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2076-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2076-27-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2392-21-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-17-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-26-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2392-29-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2724-9-0x00007FF969F00000-0x00007FF96A9C1000-memory.dmp

Filesize
10.8MB

Download
memory/2724-3-0x0000025FE5EF0000-0x0000025FE5FC2000-memory.dmp

Filesize
840KB

Download
memory/2724-0-0x00007FF969F03000-0x00007FF969F05000-memory.dmp

Filesize
8KB

Download
memory/2724-2-0x00007FF969F00000-0x00007FF96A9C1000-memory.dmp

Filesize
10.8MB

Download
memory/2724-1-0x0000025FCB990000-0x0000025FCB998000-memory.dmp

Filesize
32KB

Download
memory/3004-24-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3004-30-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3004-20-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3004-25-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3004-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3564-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-40-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3564-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-5-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-44-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3564-43-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3564-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3564-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download