remcos | ff67f46cb0b8c93cc038c969376a92b04ab3809b0efd52f99bdfbbd9a991cc87

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-09-2024 07:30

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General

Target

311148c65ef0cadb803bccc2cf922fee.exe
Size

1.1MB
MD5

311148c65ef0cadb803bccc2cf922fee
SHA1

d70c32206a52470e3b622984e7fb6ab7668c5919
SHA256

ff67f46cb0b8c93cc038c969376a92b04ab3809b0efd52f99bdfbbd9a991cc87
SHA512

8a998d9e89a53b65ef1d5a996f5540d0c0ba7f964af274ef5991dac3c4fd6c3eb4b89f5bc54449b797ffede1f57bd8d4604f4df3cd46fadb6dc94391713208cc
SSDEEP

24576:W4rAZ6dcBjZFsPgl8bIDnOjkO4/JHuNPzb2IFA:W4MwMwbIKkOIJHIPw

Score

10^/10

remcos remotehost collection discovery execution rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

hiddenrmcnew.duckdns.org:7839

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-PW8G0U
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 3 IoCs

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

resource	yara_rule
behavioral1/memory/3000-58-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2988-57-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2884-52-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2988-57-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2884-52-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2224	powershell.exe
2072	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	311148c65ef0cadb803bccc2cf922fee.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 2920 set thread context of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 set thread context of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 set thread context of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41

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 8 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	311148c65ef0cadb803bccc2cf922fee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	311148c65ef0cadb803bccc2cf922fee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	311148c65ef0cadb803bccc2cf922fee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	311148c65ef0cadb803bccc2cf922fee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	311148c65ef0cadb803bccc2cf922fee.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
2488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1620	311148c65ef0cadb803bccc2cf922fee.exe
1620	311148c65ef0cadb803bccc2cf922fee.exe
2072	powershell.exe
2224	powershell.exe
2884	311148c65ef0cadb803bccc2cf922fee.exe
2884	311148c65ef0cadb803bccc2cf922fee.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2920	311148c65ef0cadb803bccc2cf922fee.exe
2920	311148c65ef0cadb803bccc2cf922fee.exe
2920	311148c65ef0cadb803bccc2cf922fee.exe
2920	311148c65ef0cadb803bccc2cf922fee.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	311148c65ef0cadb803bccc2cf922fee.exe
Token: SeDebugPrivilege	2072	powershell.exe
Token: SeDebugPrivilege	2224	powershell.exe
Token: SeDebugPrivilege	3000	311148c65ef0cadb803bccc2cf922fee.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2224	1620	311148c65ef0cadb803bccc2cf922fee.exe	30
PID 1620 wrote to memory of 2224	1620	311148c65ef0cadb803bccc2cf922fee.exe	30
PID 1620 wrote to memory of 2224	1620	311148c65ef0cadb803bccc2cf922fee.exe	30
PID 1620 wrote to memory of 2224	1620	311148c65ef0cadb803bccc2cf922fee.exe	30
PID 1620 wrote to memory of 2072	1620	311148c65ef0cadb803bccc2cf922fee.exe	32
PID 1620 wrote to memory of 2072	1620	311148c65ef0cadb803bccc2cf922fee.exe	32
PID 1620 wrote to memory of 2072	1620	311148c65ef0cadb803bccc2cf922fee.exe	32
PID 1620 wrote to memory of 2072	1620	311148c65ef0cadb803bccc2cf922fee.exe	32
PID 1620 wrote to memory of 2488	1620	311148c65ef0cadb803bccc2cf922fee.exe	33
PID 1620 wrote to memory of 2488	1620	311148c65ef0cadb803bccc2cf922fee.exe	33
PID 1620 wrote to memory of 2488	1620	311148c65ef0cadb803bccc2cf922fee.exe	33
PID 1620 wrote to memory of 2488	1620	311148c65ef0cadb803bccc2cf922fee.exe	33
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 1620 wrote to memory of 2920	1620	311148c65ef0cadb803bccc2cf922fee.exe	36
PID 2920 wrote to memory of 2412	2920	311148c65ef0cadb803bccc2cf922fee.exe	38
PID 2920 wrote to memory of 2412	2920	311148c65ef0cadb803bccc2cf922fee.exe	38
PID 2920 wrote to memory of 2412	2920	311148c65ef0cadb803bccc2cf922fee.exe	38
PID 2920 wrote to memory of 2412	2920	311148c65ef0cadb803bccc2cf922fee.exe	38
PID 2920 wrote to memory of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 wrote to memory of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 wrote to memory of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 wrote to memory of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 wrote to memory of 2884	2920	311148c65ef0cadb803bccc2cf922fee.exe	39
PID 2920 wrote to memory of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 wrote to memory of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 wrote to memory of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 wrote to memory of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 wrote to memory of 2988	2920	311148c65ef0cadb803bccc2cf922fee.exe	40
PID 2920 wrote to memory of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41
PID 2920 wrote to memory of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41
PID 2920 wrote to memory of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41
PID 2920 wrote to memory of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41
PID 2920 wrote to memory of 3000	2920	311148c65ef0cadb803bccc2cf922fee.exe	41

C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
"C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2224
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wUtVQHiucCbXP.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2072
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wUtVQHiucCbXP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB903.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2488
- C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
  "C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2920
- - C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
    C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxvxmstfkswkmnzina"
    3⤵
    PID:2412
- - C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
    C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\sxvxmstfkswkmnzina"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2884
- - C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
    C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\crapmlezyaopwtnmwltfr"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:2988
- - C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe
    C:\Users\Admin\AppData\Local\Temp\311148c65ef0cadb803bccc2cf922fee.exe /stext "C:\Users\Admin\AppData\Local\Temp\nufifdobmiguyajqnwgzcdwfn"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3000

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\sxvxmstfkswkmnzina

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB903.tmp

Filesize
1KB

MD5
0f10435d2b0618292ad9dd1b2ca9410f

SHA1
5b7df482c9c41d62848481a9ec67d23d41a5b5ca

SHA256
e7e6000b0c150a954b1786a70518ba89915f25fecb2e0cba829e972c628bfc6c

SHA512
d9f712793cc13138431c2ab37faf0a69ccecc24f9ff1f1c941e59133162fb6ed4f106f37bdcad0bfd454b36541f719b9af29631dde63e5eb31420dbfde496e3a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\OAZPFP496QO34GZB0B6Y.temp

Filesize
7KB

MD5
adfca78cd2ee94f4989a78e109f28718

SHA1
1ef596d4b77a728035ccc6fe8ccb80dabf6b8925

SHA256
8f12db5d49860e68903a491a33d589e525a6a0836c75e2e57516a948d38bdbb9

SHA512
d62f67182b18c974344b10f22352f493a4803a2dd9e6d24a2c79aede8a4131e4355fec6aa6da5a60717b81c8cad67e670188600e6b74e467d02bbc3f4a825cc7

Download Submit
memory/1620-3-0x0000000000340000-0x0000000000352000-memory.dmp

Filesize
72KB

Download
memory/1620-4-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/1620-5-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-6-0x00000000054D0000-0x0000000005590000-memory.dmp

Filesize
768KB

Download
memory/1620-39-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-2-0x00000000743F0000-0x0000000074ADE000-memory.dmp

Filesize
6.9MB

Download
memory/1620-1-0x0000000001130000-0x0000000001242000-memory.dmp

Filesize
1.1MB

Download
memory/1620-0-0x00000000743FE000-0x00000000743FF000-memory.dmp

Filesize
4KB

Download
memory/2884-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2884-49-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2884-52-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2920-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-69-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-29-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-40-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2920-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-76-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-75-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-74-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-64-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-63-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-19-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-66-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-70-0x0000000010000000-0x0000000010019000-memory.dmp

Filesize
100KB

Download
memory/2920-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-71-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-72-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2920-73-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2988-53-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2988-57-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2988-51-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/3000-55-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3000-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/3000-56-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download