remcos | 3d4bfc47bd88ef39e0780482a1b0fde1cd85772ddce25d9905d88d48b5b96a4a

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-10-2024 10:06

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General

Target

b75532f01dc42a2e4ae8164b69189471.exe
Size

1.1MB
MD5

b75532f01dc42a2e4ae8164b69189471
SHA1

619f41a048fee334f9617581bf029690fc3501ff
SHA256

3d4bfc47bd88ef39e0780482a1b0fde1cd85772ddce25d9905d88d48b5b96a4a
SHA512

029d3210039fd2628c2c76b857b26dcc95c64cfe3adf615b998f988a51a0ada338ed3ab04e9992f5695dcfa530c327506f6a8a9d1fe77614386a00101ae5613a
SSDEEP

24576:syE0h6lrEYESlA+NKWCgjUky/W+I3b1oYxDzecXWsscifR:sygjtlA+M3g4bKDDS+WX9

Score

10^/10

remcos remotehost collection discovery rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

103.186.116.30:1111

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
Rmc-PP5DA9
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

Detected Nirsoft tools 6 IoCs

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

resource	yara_rule
behavioral2/memory/4848-40-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/1504-41-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1504-38-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4852-37-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/1504-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/4848-46-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/1504-41-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1504-38-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral2/memory/1504-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/4848-40-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4848-46-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

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-1-5-21-4182098368-2521458979-3782681353-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	b75532f01dc42a2e4ae8164b69189471.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 3720 set thread context of 4848	3720	b75532f01dc42a2e4ae8164b69189471.exe	91
PID 3720 set thread context of 1504	3720	b75532f01dc42a2e4ae8164b69189471.exe	93
PID 3720 set thread context of 4852	3720	b75532f01dc42a2e4ae8164b69189471.exe	94

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	b75532f01dc42a2e4ae8164b69189471.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b75532f01dc42a2e4ae8164b69189471.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b75532f01dc42a2e4ae8164b69189471.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b75532f01dc42a2e4ae8164b69189471.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b75532f01dc42a2e4ae8164b69189471.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4848	b75532f01dc42a2e4ae8164b69189471.exe
4848	b75532f01dc42a2e4ae8164b69189471.exe
4852	b75532f01dc42a2e4ae8164b69189471.exe
4852	b75532f01dc42a2e4ae8164b69189471.exe
4848	b75532f01dc42a2e4ae8164b69189471.exe
4848	b75532f01dc42a2e4ae8164b69189471.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3720	b75532f01dc42a2e4ae8164b69189471.exe
3720	b75532f01dc42a2e4ae8164b69189471.exe
3720	b75532f01dc42a2e4ae8164b69189471.exe
3720	b75532f01dc42a2e4ae8164b69189471.exe
3720	b75532f01dc42a2e4ae8164b69189471.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4852	b75532f01dc42a2e4ae8164b69189471.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 2396 wrote to memory of 3720	2396	b75532f01dc42a2e4ae8164b69189471.exe	82
PID 3720 wrote to memory of 4404	3720	b75532f01dc42a2e4ae8164b69189471.exe	90
PID 3720 wrote to memory of 4404	3720	b75532f01dc42a2e4ae8164b69189471.exe	90
PID 3720 wrote to memory of 4404	3720	b75532f01dc42a2e4ae8164b69189471.exe	90
PID 3720 wrote to memory of 4848	3720	b75532f01dc42a2e4ae8164b69189471.exe	91
PID 3720 wrote to memory of 4848	3720	b75532f01dc42a2e4ae8164b69189471.exe	91
PID 3720 wrote to memory of 4848	3720	b75532f01dc42a2e4ae8164b69189471.exe	91
PID 3720 wrote to memory of 4848	3720	b75532f01dc42a2e4ae8164b69189471.exe	91
PID 3720 wrote to memory of 768	3720	b75532f01dc42a2e4ae8164b69189471.exe	92
PID 3720 wrote to memory of 768	3720	b75532f01dc42a2e4ae8164b69189471.exe	92
PID 3720 wrote to memory of 768	3720	b75532f01dc42a2e4ae8164b69189471.exe	92
PID 3720 wrote to memory of 1504	3720	b75532f01dc42a2e4ae8164b69189471.exe	93
PID 3720 wrote to memory of 1504	3720	b75532f01dc42a2e4ae8164b69189471.exe	93
PID 3720 wrote to memory of 1504	3720	b75532f01dc42a2e4ae8164b69189471.exe	93
PID 3720 wrote to memory of 1504	3720	b75532f01dc42a2e4ae8164b69189471.exe	93
PID 3720 wrote to memory of 4852	3720	b75532f01dc42a2e4ae8164b69189471.exe	94
PID 3720 wrote to memory of 4852	3720	b75532f01dc42a2e4ae8164b69189471.exe	94
PID 3720 wrote to memory of 4852	3720	b75532f01dc42a2e4ae8164b69189471.exe	94
PID 3720 wrote to memory of 4852	3720	b75532f01dc42a2e4ae8164b69189471.exe	94

C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
"C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
  "C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3720
- - C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
    C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe /stext "C:\Users\Admin\AppData\Local\Temp\aighcdzhrzjuir"
    3⤵
    PID:4404
- - C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
    C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe /stext "C:\Users\Admin\AppData\Local\Temp\aighcdzhrzjuir"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4848
- - C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
    C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe /stext "C:\Users\Admin\AppData\Local\Temp\ckuzdvkbfhbztfnxy"
    3⤵
    PID:768
- - C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
    C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe /stext "C:\Users\Admin\AppData\Local\Temp\ckuzdvkbfhbztfnxy"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:1504
- - C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe
    C:\Users\Admin\AppData\Local\Temp\b75532f01dc42a2e4ae8164b69189471.exe /stext "C:\Users\Admin\AppData\Local\Temp\mezswndcsptmvljbhpoz"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4852

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

Replay Monitor

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Downloads

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

Filesize
4KB

MD5
faaa2b16df1bfc1a3792faaa35786349

SHA1
359534a59d7c5139ae205c24533ba60afdfb9f3f

SHA256
3586befc3b8b4da223e2ee0dcb00965ba5c0a205c14f2acefdeec7e46efddd5a

SHA512
2fbc79cace52a58e69ab983d034bb41ebb2496f767e18e5e4b31eefc4447c935d8614f744c71302e459350a05562fadc4c2355d76638b595e7cff1bb3d1618db

Download Submit
memory/1504-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1504-41-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1504-38-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1504-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1504-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2396-4-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2396-7-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2396-8-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2396-9-0x00000000095F0000-0x00000000096B0000-memory.dmp

Filesize
768KB

Download
memory/2396-10-0x000000000C6B0000-0x000000000C74C000-memory.dmp

Filesize
624KB

Download
memory/2396-6-0x0000000006BE0000-0x0000000006BFE000-memory.dmp

Filesize
120KB

Download
memory/2396-5-0x0000000005590000-0x000000000559A000-memory.dmp

Filesize
40KB

Download
memory/2396-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2396-3-0x00000000055F0000-0x0000000005682000-memory.dmp

Filesize
584KB

Download
memory/2396-16-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2396-2-0x0000000005B00000-0x00000000060A4000-memory.dmp

Filesize
5.6MB

Download
memory/2396-1-0x0000000000A60000-0x0000000000B76000-memory.dmp

Filesize
1.1MB

Download
memory/3720-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-61-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-60-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-12-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-11-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3720-48-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3720-52-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3720-51-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/3720-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4848-46-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4848-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4848-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4848-40-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4848-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4852-34-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4852-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4852-35-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download