remcos | 4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-01-2025 14:32

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General

Target

4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
Size

830KB
MD5

ac26baf5b7b03aa4046b2c2413a4c2c2
SHA1

4cc0593d71b377a7b5ffc9fa578dcb8dd374f4ea
SHA256

4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2
SHA512

df6a508cf59c7b08dbf8c238e9e41c4d5940336176bb0e5e0a0f11a3fab213831c532c86e96ec401ec94692010a6663bacb54f2e9fbd212b99defc9e97625798
SSDEEP

24576:Prl6kD68JmlotQfL4boOtmYOaarnTDRTf:zl328U2yfkmmarnTDR

Score

10^/10

remcos remotehost collection discovery rat spyware stealer upx

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.210.150.26:8787

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-R1T905
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 6 IoCs

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

resource	yara_rule
behavioral2/memory/5060-56-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2592-55-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1876-54-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1876-46-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1876-58-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2592-47-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2592-55-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/2592-47-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1876-54-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1876-46-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/1876-58-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lecheries.vbs	lecheries.exe

Executes dropped EXE 5 IoCs

pid	Process
4688	lecheries.exe
4264	lecheries.exe
1876	lecheries.exe
2592	lecheries.exe
5060	lecheries.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-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	lecheries.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2880-13-0x0000000000F50000-0x000000000111C000-memory.dmp	autoit_exe
behavioral2/memory/4688-69-0x00000000009A0000-0x0000000000B6C000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4688 set thread context of 1876	4688	lecheries.exe	86
PID 4688 set thread context of 2592	4688	lecheries.exe	87
PID 4688 set thread context of 5060	4688	lecheries.exe	88

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2880-0-0x0000000000F50000-0x000000000111C000-memory.dmp	upx
behavioral2/memory/2880-13-0x0000000000F50000-0x000000000111C000-memory.dmp	upx
behavioral2/files/0x0008000000023c15-14.dat	upx
behavioral2/memory/4688-11-0x00000000009A0000-0x0000000000B6C000-memory.dmp	upx
behavioral2/memory/4688-69-0x00000000009A0000-0x0000000000B6C000-memory.dmp	upx

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	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lecheries.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lecheries.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lecheries.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lecheries.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1876	lecheries.exe
1876	lecheries.exe
5060	lecheries.exe
5060	lecheries.exe
1876	lecheries.exe
1876	lecheries.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
4688	lecheries.exe
4688	lecheries.exe
4688	lecheries.exe
4688	lecheries.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5060	lecheries.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
4688	lecheries.exe
4688	lecheries.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
4688	lecheries.exe
4688	lecheries.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 4688	2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe	83
PID 2880 wrote to memory of 4688	2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe	83
PID 2880 wrote to memory of 4688	2880	4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe	83
PID 4688 wrote to memory of 4264	4688	lecheries.exe	85
PID 4688 wrote to memory of 4264	4688	lecheries.exe	85
PID 4688 wrote to memory of 4264	4688	lecheries.exe	85
PID 4688 wrote to memory of 1876	4688	lecheries.exe	86
PID 4688 wrote to memory of 1876	4688	lecheries.exe	86
PID 4688 wrote to memory of 1876	4688	lecheries.exe	86
PID 4688 wrote to memory of 1876	4688	lecheries.exe	86
PID 4688 wrote to memory of 2592	4688	lecheries.exe	87
PID 4688 wrote to memory of 2592	4688	lecheries.exe	87
PID 4688 wrote to memory of 2592	4688	lecheries.exe	87
PID 4688 wrote to memory of 2592	4688	lecheries.exe	87
PID 4688 wrote to memory of 5060	4688	lecheries.exe	88
PID 4688 wrote to memory of 5060	4688	lecheries.exe	88
PID 4688 wrote to memory of 5060	4688	lecheries.exe	88
PID 4688 wrote to memory of 5060	4688	lecheries.exe	88

C:\Users\Admin\AppData\Local\Temp\4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe
"C:\Users\Admin\AppData\Local\Temp\4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Users\Admin\AppData\Local\differences\lecheries.exe
  "C:\Users\Admin\AppData\Local\Temp\4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Users\Admin\AppData\Local\differences\lecheries.exe
    C:\Users\Admin\AppData\Local\differences\lecheries.exe /stext "C:\Users\Admin\AppData\Local\Temp\jcjeukishtej"
    3⤵
    - Executes dropped EXE
    PID:4264
- - C:\Users\Admin\AppData\Local\differences\lecheries.exe
    C:\Users\Admin\AppData\Local\differences\lecheries.exe /stext "C:\Users\Admin\AppData\Local\Temp\jcjeukishtej"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1876
- - C:\Users\Admin\AppData\Local\differences\lecheries.exe
    C:\Users\Admin\AppData\Local\differences\lecheries.exe /stext "C:\Users\Admin\AppData\Local\Temp\teopvctudbwovsag"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2592
- - C:\Users\Admin\AppData\Local\differences\lecheries.exe
    C:\Users\Admin\AppData\Local\differences\lecheries.exe /stext "C:\Users\Admin\AppData\Local\Temp\ezuhoueorjpbgypkoew"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
13afee0ce2bce8fd81f53ec11a27237d

SHA1
da5fd0cdeec5a2e1234657b81f5f2e757ca43b6e

SHA256
d3fff9c4b85cbb13c8e2e59877485d7dafa91d3a9a9864b497c9a66df9273f52

SHA512
d7baed2c394dfd11f49895339622d75e44eb610f3cfa0f39a76052b7dcb5b9ace143986fd71dfce550d5194e505f4489192986e6806d627decd757ce3e846625

Download Submit
C:\Users\Admin\AppData\Local\Temp\intemeration

Filesize
481KB

MD5
b330d054750c618ea270434fec0b3a6f

SHA1
d485934828495f688a5d844905b8aeb0e257e40c

SHA256
bd39655dc196287079fa8f554a938e2d77bc50e8987e974bfeb2795ab7099f9c

SHA512
5cf375fd136aa44d990dff6ebc68fc87c387b871f7712cba40e9f2432407ccba42df6e676b2bfe17350a51912326ca9ee3697adf42d7672ea22e40d3237f3a3d

Download Submit
C:\Users\Admin\AppData\Local\Temp\jcjeukishtej

Filesize
4KB

MD5
17eece3240d08aa4811cf1007cfe2585

SHA1
6c10329f61455d1c96e041b6f89ee6260af3bd0f

SHA256
7cc0db44c7b23e4894fe11f0d8d84b2a82ad667eb1e3504192f3ba729f9a7903

SHA512
a7de8d6322410ec89f76c70a7159645e8913774f38b84aafeeeb9f90dc3b9aa74a0a280d0bb6674790c04a8ff2d059327f02ebfda6c4486778d53b7fc6da6370

Download Submit
C:\Users\Admin\AppData\Local\differences\lecheries.exe

Filesize
830KB

MD5
ac26baf5b7b03aa4046b2c2413a4c2c2

SHA1
4cc0593d71b377a7b5ffc9fa578dcb8dd374f4ea

SHA256
4108277feb47e70ea76dea706b8a8e7ed1dc94575c1ed200e78073b4d97185a2

SHA512
df6a508cf59c7b08dbf8c238e9e41c4d5940336176bb0e5e0a0f11a3fab213831c532c86e96ec401ec94692010a6663bacb54f2e9fbd212b99defc9e97625798

Download Submit
memory/1876-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1876-41-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1876-38-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1876-54-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1876-58-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2592-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2592-42-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2592-47-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2592-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2880-7-0x0000000001A00000-0x0000000001E00000-memory.dmp

Filesize
4.0MB

Download
memory/2880-13-0x0000000000F50000-0x000000000111C000-memory.dmp

Filesize
1.8MB

Download
memory/2880-0-0x0000000000F50000-0x000000000111C000-memory.dmp

Filesize
1.8MB

Download
memory/4688-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-64-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-113-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-22-0x00000000014E0000-0x00000000018E0000-memory.dmp

Filesize
4.0MB

Download
memory/4688-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-11-0x00000000009A0000-0x0000000000B6C000-memory.dmp

Filesize
1.8MB

Download
memory/4688-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-60-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-65-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-63-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4688-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-69-0x00000000009A0000-0x0000000000B6C000-memory.dmp

Filesize
1.8MB

Download
memory/4688-70-0x00000000014E0000-0x00000000018E0000-memory.dmp

Filesize
4.0MB

Download
memory/4688-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-92-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4688-91-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/5060-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5060-48-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/5060-53-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download