remcos | e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0

Analysis

max time kernel
149s
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
09-12-2024 02:57

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General

Target

e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
Size

856KB
MD5

f3c6c680b66ef4a132e3a9b61b83622d
SHA1

c720cc4ff63d365458e9be977ed692263108dc87
SHA256

e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0
SHA512

331daf042e405db03632781216131b5495af8ad3f024623757f56b45957bcb0cabc5fa8d08252aa613b03f0e07a685ae60cb260deaa6eae11745f8283750f5a2
SSDEEP

24576:Erl6kD68JmlotQfwmqmLQjmVlWGEeXqhaf:yl328U2yfwmjQm1EeXY

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 5 IoCs

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

resource	yara_rule
behavioral2/memory/4220-46-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4220-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1936-53-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4448-44-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4448-56-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/4220-46-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/4220-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4448-44-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4448-56-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Drops startup file 1 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
4504	nonhazardousness.exe
4448	nonhazardousness.exe
4220	nonhazardousness.exe
1936	nonhazardousness.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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	nonhazardousness.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/1800-13-0x0000000000950000-0x0000000000B28000-memory.dmp	autoit_exe
behavioral2/memory/4504-22-0x0000000001420000-0x0000000001820000-memory.dmp	autoit_exe
behavioral2/memory/4504-64-0x00000000006A0000-0x0000000000878000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4504 set thread context of 4448	4504	nonhazardousness.exe	83
PID 4504 set thread context of 4220	4504	nonhazardousness.exe	84
PID 4504 set thread context of 1936	4504	nonhazardousness.exe	85

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1800-0-0x0000000000950000-0x0000000000B28000-memory.dmp	upx
behavioral2/memory/1800-13-0x0000000000950000-0x0000000000B28000-memory.dmp	upx
behavioral2/memory/4504-11-0x00000000006A0000-0x0000000000878000-memory.dmp	upx
behavioral2/files/0x000a000000023b8c-10.dat	upx
behavioral2/memory/4504-64-0x00000000006A0000-0x0000000000878000-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	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nonhazardousness.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nonhazardousness.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nonhazardousness.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nonhazardousness.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4448	nonhazardousness.exe
4448	nonhazardousness.exe
1936	nonhazardousness.exe
1936	nonhazardousness.exe
4448	nonhazardousness.exe
4448	nonhazardousness.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4504	nonhazardousness.exe
4504	nonhazardousness.exe
4504	nonhazardousness.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1936	nonhazardousness.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
4504	nonhazardousness.exe
4504	nonhazardousness.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
4504	nonhazardousness.exe
4504	nonhazardousness.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 4504	1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe	82
PID 1800 wrote to memory of 4504	1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe	82
PID 1800 wrote to memory of 4504	1800	e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe	82
PID 4504 wrote to memory of 4448	4504	nonhazardousness.exe	83
PID 4504 wrote to memory of 4448	4504	nonhazardousness.exe	83
PID 4504 wrote to memory of 4448	4504	nonhazardousness.exe	83
PID 4504 wrote to memory of 4448	4504	nonhazardousness.exe	83
PID 4504 wrote to memory of 4220	4504	nonhazardousness.exe	84
PID 4504 wrote to memory of 4220	4504	nonhazardousness.exe	84
PID 4504 wrote to memory of 4220	4504	nonhazardousness.exe	84
PID 4504 wrote to memory of 4220	4504	nonhazardousness.exe	84
PID 4504 wrote to memory of 1936	4504	nonhazardousness.exe	85
PID 4504 wrote to memory of 1936	4504	nonhazardousness.exe	85
PID 4504 wrote to memory of 1936	4504	nonhazardousness.exe	85
PID 4504 wrote to memory of 1936	4504	nonhazardousness.exe	85

C:\Users\Admin\AppData\Local\Temp\e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe
"C:\Users\Admin\AppData\Local\Temp\e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe
  "C:\Users\Admin\AppData\Local\Temp\e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0.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:4504
- - C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe
    C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe /stext "C:\Users\Admin\AppData\Local\Temp\hnkv"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4448
- - C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe
    C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe /stext "C:\Users\Admin\AppData\Local\Temp\rppgkrw"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4220
- - C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe
    C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe /stext "C:\Users\Admin\AppData\Local\Temp\ckuykbgdsx"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1936

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
59836089d148edde19321d067a1ac8c6

SHA1
ffd5be21b89f1d4e5f333f01b984cbb959765a74

SHA256
5d8c02be187d995661d7664d9e0088c8f8d37414ba218d45845ad6114ef24246

SHA512
9556e2f8b3738dfacc2ef49363bc88bf14252d5c962c18b9b16bc559ec0b23d13c2c0b6cb8285c857f4831b4b47c405932addf34cee7d9ec42135b3ff2a22cca

Download Submit
C:\Users\Admin\AppData\Local\Sancerre\nonhazardousness.exe

Filesize
856KB

MD5
f3c6c680b66ef4a132e3a9b61b83622d

SHA1
c720cc4ff63d365458e9be977ed692263108dc87

SHA256
e51f50b3f520e3de0f0916e0291ad093aa0c50f6c81010001ce5aa2aee88f7b0

SHA512
331daf042e405db03632781216131b5495af8ad3f024623757f56b45957bcb0cabc5fa8d08252aa613b03f0e07a685ae60cb260deaa6eae11745f8283750f5a2

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

Filesize
4KB

MD5
bc25ccf39db8626dc249529bcc8c5639

SHA1
3e9cbdb20a0970a3c13719a2f289d210cdcc9e1d

SHA256
b333f8c736c701bc826886f395d928731850cbce6db77be752b3cf7979114904

SHA512
9a546127bddc1d187e674cda82e6c5046cac7f3e6f9515aed68d5bff2264b9d679d857dd97270e10826cd11ce2d92d82dd7f9801e19027e346b60bcc814cca1a

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

Filesize
481KB

MD5
5da0e2a6af58f3c61e2a9d03160b0be6

SHA1
077b3fb750beb67eb8615c3101ceb91e2c9f8ca1

SHA256
6412b25824b53394b1b61f6dad679d0701f99dd9daa27a3fd1893ab0d5883fd8

SHA512
166ea3de661e775bc46ebdcdeb70337d1692a73beb8450d3251c327c3364d70ced003467e3574a874fba599a834bd5bd07697adf3e6f78b52dd410988c64b90b

Download Submit
memory/1800-0-0x0000000000950000-0x0000000000B28000-memory.dmp

Filesize
1.8MB

Download
memory/1800-7-0x0000000001350000-0x0000000001750000-memory.dmp

Filesize
4.0MB

Download
memory/1800-13-0x0000000000950000-0x0000000000B28000-memory.dmp

Filesize
1.8MB

Download
memory/1936-49-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-47-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1936-53-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4220-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4220-45-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4220-46-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4220-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4448-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4448-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4448-44-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4448-36-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4448-56-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4504-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-22-0x0000000001420000-0x0000000001820000-memory.dmp

Filesize
4.0MB

Download
memory/4504-58-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4504-62-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4504-61-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/4504-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-64-0x00000000006A0000-0x0000000000878000-memory.dmp

Filesize
1.8MB

Download
memory/4504-65-0x0000000001420000-0x0000000001820000-memory.dmp

Filesize
4.0MB

Download
memory/4504-67-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-11-0x00000000006A0000-0x0000000000878000-memory.dmp

Filesize
1.8MB

Download
memory/4504-84-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-85-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-117-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4504-118-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download